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Morbihan, Brittany, France i
Regional Level Types
Morbihan Department
Brittany Region
France Country

Regional Level Types
Morbihan	Department
Brittany	Region
France	Country

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Predictive Mineralogy

Morbihan Rough Coast

Morbihan, Brittany, France

Morbihan Land of Megaliths

Morbihan, Brittany, France

Le Courégant Beach

Le Courégant beach alluvial deposits, Ploemeur, Lorient, Morbihan, Brittany, France

Morbihan Rough Coast

Morbihan, Brittany, France

Morbihan Land of Megaliths

Morbihan, Brittany, France

Le Courégant Beach

Le Courégant beach alluvial deposits, Ploemeur, Lorient, Morbihan, Brittany, France

Morbihan Rough Coast

Morbihan, Brittany, France

Morbihan Land of Megaliths

Morbihan, Brittany, France

Neighbouring regions:

Côtes-d'Armor, Brittany, France

Finistère, Brittany, France

Ille-et-Vilaine, Brittany, France

Loire-Atlantique, Pays de la Loire, France

Type:

Department

Largest Settlements:

Place	Population
Lorient	58,112 (2016)
Vannes	54,020 (2018)
Lanester	24,352 (2016)
Ploemeur	20,652 (2016)
Pontivy	16,752 (2016)
Hennebont	14,288 (2016)

Mindat Locality ID:

22146

Long-form identifier:

mindat:1:2:22146:6

GUID (UUID V4):

Other Languages:

View 90 more...

French:

Morbihan, Bretagne, France

German:

Département Morbihan, Bretagne, Frankreich

Italian:

Morbihan, Bretagna, Francia

Russian:

Морбиан, Бретань, Франция

Simplified Chinese:

莫尔比昂省, 布列塔尼半岛, 法国

Spanish:

Morbihan, Bretón, Francia

Afrikaans:

Morbihan, Bretagne, Frankryk

Albanian:

Morbihan, Bretagne, Franca

Alemannic:

Département Morbihan, Bretagne, Frankreich

Arabic:

موربيهان, بريتاني, فرنسا

Aragonese:

Mor-Bihan, Bretanya, Francia

Armenian:

Մորբիան, Բրետան, Ֆրանսիա

Azeri:

Morbian, Bretan, Fransa

Basque:

Morbihan, Bretainia, Frantzia

Belarusian:

Марбіян, Брэтань, Францыя

Belarusian (Tarashkevitsa):

Марбіян, Брэтань, Францыя

Bengali:

মরবিহান, ব্রতাইন, ফ্রান্স

Breton:

Mor-Bihan, Breizh, Bro-C'hall

Bulgarian:

Морбиан, Бретан, Франция

Catalan:

Morbihan, Bretanya, França

Cebuano:

Morbihan, Bretagne, Pransiya

Chechen:

Морбиан, Бретань, Франци

Chuvash:

Морбиан, Бретань, Франци

Czech:

Morbihan, Bretaň, Francie

Danish:

Morbihan, Bretagne, Frankrig

Dutch:

Morbihan, Bretagne, Frankrijk

Esperanto:

Morbihan, Bretonio, Francio

Estonian:

Morbihani departemang, Bretagne, Prantsusmaa

Farsi/Persian:

موربیان, برتاین , فرانسه

Finnish:

Morbihan, Bretagne, Ranska

Franco-Provençal:

Morbihan, Bretagne, France

Galician:

Morbihan, Bretaña, Francia

Georgian:

მორბიანი, ბრეტანი, საფრანგეთი

Greek:

Μορμπιάν, Βρετάνη, Γαλλία

Gujarati:

મોરબીહાન, ફ્રાન્સ

Hakka:

Morbihan-sén, Brittany, Fap-koet

Hebrew:

מורביאן, ברטאן, צרפת

Hindi:

मोरबिहन, फ़्रान्स

Hungarian:

Morbihan, Bretagne, Franciaország

Icelandic:

Morbihan, Bretanía, Frakkland

Indonesian:

Morbihan, Bretagne, Perancis

Interlingua:

Departimento Morbihan, Region Britannia, Francia

Japanese:

モルビアン県, ブルターニュ, フランス

Judaeo-Spanish:

Morbihan, Bretanya, Fransia

Kabyle:

Morbihan, Bretagne, Fransa

Kannada:

ಮೊರ್ಬಿಹಾನ್, ಫ್ರಾನ್ಸ್

Kapampangan:

Morbihan, Bretagne, Pransiya

Kazakh (Cyrillic Script):

Морбиан, Франция

Kongo:

Morbihan, Fwalansa

Korean:

모르비앙주, 브르타뉴, 프랑스

Latin:

Mariculum, Britannia Minor, Francia

Latvian:

Morbiāna, Bretaņa, Francija

Limburgian:

Morbihan, Bretagne, Frankriek

Lithuanian:

Morbihanas, Bretanė, Prancūzija

Lombard:

Morbihan, Frància

Low Saxon/Low German:

Morbihan, Frankriek

Luxembourgish:

Departement Morbihan, Bretagne, Frankräich

Macedonian:

Морбијан, Бретања, Франција

Malagasy:

Morbihan, Frantsa

Malay:

Morbihan, Bretagne, Perancis

Manx:

Mor-Bihan, Yn Vritaan, Yn Rank

Marathi:

मॉर्बियां, ब्रत्तान्य, फ्रान्स

Minnan / Hokkien-Taiwanese:

Morbihan, Région Bretagne, Hoat-kok

Northern Sami:

Morbihan, Bretagne, Frankriika

Norwegian:

Morbihan, Bretagne, Frankrike

Norwegian (Nynorsk):

Morbihan, Bretagne, Frankrike

Occitan:

Morbihan, Bretanha, França

Piedmontese:

Dipartiment dël Morbihan, Brëtagna, Fransa

Polish:

Morbihan, Bretania, Francja

Portuguese:

Morbihan, Bretanha, França

Romanian:

Morbihan, Bretania, Franța

Scots:

Morbihan, Breetany, Fraunce

Scottish Gaelic:

Mor-Bihan, An Fhraing

Serbian:

Морбијан, Бретања, Француска

Serbo-Croatian:

Morbihan, Bretanja, Francuska

Sinhalese:

මොර්බිහාන්, ප්‍රංශය

Slovak:

Morbihan, Bretónsko, Francúzsko

Slovenian:

Morbihan, Bretanja, Francija

South Azerbaijani:

موربیان, فرانسه

Swahili:

Morbihan, Bretagne, Ufaransa

Swedish:

Morbihan, Bretagne, Frankrike

Tajik (Cyrillic Script):

Департаменти Морбиан, Фаронса

Tamil:

மோர்பிஹன், பிரான்சு

Tatar:

Морбиаң, Бретань ярымутравы, Франция

Telugu:

మోర్బిహాన్, ఫ్రాన్సు

Thai:

จังหวัดมอร์บีอ็อง, แคว้นเบรอตาญ, ประเทศฝรั่งเศส

Traditional Chinese:

莫爾比昂, 布禮斯大區, 法國

Turkish:

Morbihan, Bretonya, Fransa

Ukrainian:

Морбіан, Бретань, Франція

Urdu:

موربیاں, بریتانیہ, فرانس

Venetian:

Morbihan, Bretagna, Fransa

Vietnamese:

Morbihan, Bretagne, Pháp

Waray:

Morbihan, Bretagne, Fransya

Welsh:

Mor-Bihan, Bretagne, Ffrainc

Western Punjabi:

ضلع موربیہان, برٹنی, فرانس

Wu Chinese:

莫尔比昂省, 法国

The name of the department comes from Mor-Bihan, a Breton name meaning "small sea" in connection with the famous enclosed sea: the Gulf of Morbihan. The area of the department is 6,823 km² for 905 km of coastline. It is bordered by the Atlantic ocean near which many megalithic sites (Carnac, Locmariaquer, etc.) can be observed.

The Morbihan Gulf has 42 islands. Outside this enclosed sea, in the "Mor Braz" ("the great sea" in the Breton language, for the ocean), there are four inhabited islands: Houat, Hoëdic, Belle-Ile-en-Mer, and Groix.
The Morbihan area covers a little more than one-tenth of the Armorican Massif area. The highest summit of Morbihan lies at the east part of the Montagnes Noires (Black Mountains): The Calotte St. Joseph (292 meters) whereas the highest point is situated north of Gourin city (301 meters).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.

ⓘ Aggregates

ⓘ Beryllium

ⓘ Kaolin (China Clay)

ⓘ Molybdenum

ⓘ Tin

Mineral List

Mineral list contains entries from the region specified including sub-localities

ⓘ 'Amphibole Supergroup'

ⓘ 'Columbite-Tantalite'

ⓘ 'Fayalite-Forsterite Series'

ⓘ var. Carbonate-rich Fluorapatite

ⓘ 'Freibergite Subgroup'

ⓘ 'Hornblende Root Name Group'

ⓘ 'var. Lepidomelane'

ⓘ Natrodufrénite (TL)

ⓘ 'Petroleum
var. Bitumen'

ⓘ var. Sagenite (of Saussure)

ⓘ 'Serpentine Subgroup'

ⓘ 'Tetrahedrite Group'

207 valid minerals. 1 (TL) - type locality of valid minerals.

Rock Types Recorded

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Acanthite

Formula: Ag₂S

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France
La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

ⓘ Actinolite

Formula: ◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂

Localities:

Roguédas, Arradon, Vannes, Morbihan, Brittany, France
Groix, Lorient, Morbihan, Brittany, France
Gâvres beach alluvial deposits, Port-Louis, Lorient, Morbihan, Brittany, France
Biléric, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Ile-d'Arz, Vannes, Morbihan, Brittany, France

ⓘ Aikinite

Formula: CuPbBiS₃

Localities:

Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France
Vouedec (Ouadec), Berné, Pontivy, Morbihan, Brittany, France

ⓘ Albite

Formula: Na(AlSi₃O₈)

Localities: Reported from at least 23 localities in this region.

ⓘ Almandine

Formula: Fe²⁺₃Al₂(SiO₄)₃

Localities: Reported from at least 11 localities in this region.

ⓘ 'Amphibole Supergroup'

Formula: AB₂C₅(T₈O₂₂)W₂

Localities: Reported from at least 34 localities in this region.

ⓘ Anatase

Formula: TiO₂

Localities: Reported from at least 34 localities in this region.

Habit: Bipyramid

Colour: Blue / Black / Brown

ⓘ Andalusite

Formula: Al₂(SiO₄)O

Localities: Reported from at least 38 localities in this region.

ⓘ Andalusite var. Chiastolite

Formula: Al₂(SiO₄)O

Locality: Les Salles de Rohan, Sainte-Brigitte, Pontivy, Morbihan, Brittany, France

References:

Lukas, Yann (1978) Roches et minéraux de Bretagne. Ouest France. p.1-33.pp.7-9

ⓘ 'Andorite'

Formula: AgPbSb₃S₆

Locality: Coët Stival, Pontivy, Pontivy, Morbihan, Brittany, France

References:

Y. Moëlo, E. Makovicky and S. Karup-Moller : "Sulfures complexes plombo-argentifères : minéralogie et cristallochimie de la série andorite-fizelyite", Documents du BRGM N° 167, 1989.

ⓘ Andradite

Formula: Ca₃Fe³⁺₂(SiO₄)₃

Locality: Tréhiguier harbour amphibolite outcrops, Tréhiguier, Penestin, Vannes, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Anglesite

Formula: PbSO₄

Localities:

La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France
Lead mine, Saint-Maudé, Baud, Pontivy, Morbihan, Brittany, France
Trec'h beach, Primiture, Groix, Lorient, Morbihan, Brittany, France

Habit: Elongated pyramid

Colour: Colorless to white

Description: In dissolution pocket in galena

ⓘ Ankerite

Formula: Ca(Fe²⁺,Mg)(CO₃)₂

Locality: Tromeur, Lizio, Vannes, Morbihan, Brittany, France

Description: Yellow transparent microcrystals (scalenohedrons).

References:

Devismes, P. (1978) Atlas photographique des minéraux d'alluvions. Mémoires du BRGM, no. 95.

ⓘ Anorthite

Formula: Ca(Al₂Si₂O₈)

Locality: Roguédas, Arradon, Vannes, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.310

ⓘ Antigorite

Formula: Mg₃(Si₂O₅)(OH)₄

Locality: Tréhor, Pivisy, Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.295

ⓘ 'Apatite'

Formula: Ca₅(PO₄)₃A

Localities: Reported from at least 26 localities in this region.

ⓘ Arsenopyrite

Formula: FeAsS

Localities: Reported from at least 14 localities in this region.

ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

Locality: Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France

References:

Périnet, François (n.d.) Personal communication.

ⓘ Autunite

Formula: Ca(UO₂)₂(PO₄)₂ · 10-12H₂O

Localities: Reported from at least 22 localities in this region.

Description: In granite arenite.

ⓘ Barroisite

Formula: ◻(CaNa)(Mg₃Al₂)(AlSi₇O₂₂)(OH)₂

Locality: Groix, Lorient, Morbihan, Brittany, France

ⓘ Baryte

Formula: BaSO₄

Localities: Reported from at least 9 localities in this region.

ⓘ Bassetite

Formula: Fe²⁺(UO₂)₂(PO₄)₂ · 10H₂O

Localities:

Le Bonote, Berné, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France
Vouedec (Ouadec), Berné, Pontivy, Morbihan, Brittany, France

ⓘ Beidellite

Formula: (Na,Ca_0.5)_0.3Al₂((Si,Al)₄O₁₀)(OH)₂ · nH₂O

Locality: Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.292

✪ Beraunite

Formula: Fe³⁺₆(PO₄)₄O(OH)₄ · 6H₂O

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Habit: Fibrous spherule

Colour: Pale green to black

References:

Le Roc'h P., Bocianowski M. ((2001), La carrière de la Lande, Plumelin (Morbihan), Le Cahier des Micromonteurs, n°72, pp: 7-10

ⓘ Bertrandite

Formula: Be₄(Si₂O₇)(OH)₂

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Quily quarry, Quily, Pontivy, Morbihan, Brittany, France

ⓘ Beryl

Formula: Be₃Al₂(Si₆O₁₈)

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Quily quarry, Quily, Pontivy, Morbihan, Brittany, France
La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Colour: Colorless to whitish blue

Description: Gem quality.

ⓘ 'Biotite'

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

Localities: Reported from at least 6 localities in this region.

ⓘ Bismuthinite

Formula: Bi₂S₃

Localities: Reported from at least 7 localities in this region.

ⓘ Bornite

Formula: Cu₅FeS₄

Localities:

Le Bonote, Berné, Pontivy, Morbihan, Brittany, France
Biléric, Pivisy, Groix, Lorient, Morbihan, Brittany, France

ⓘ Bournonite

Formula: PbCuSbS₃

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

ⓘ Brookite

Formula: TiO₂

Localities: Reported from at least 6 localities in this region.

Habit: Tabular prism

Colour: Brown

ⓘ Cacoxenite

Formula: Fe³⁺₂₄AlO₆(PO₄)₁₇(OH)₁₂ · 75H₂O

Localities:

La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France
La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Pluherlin Castle, Rochefort-en-Terre, Vannes, Morbihan, Brittany, France

Habit: Acicular

Colour: Yellow

ⓘ Calcite

Formula: CaCO₃

Localities:

Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France
La Mine d'Or beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France
Biléric, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Le Fons, Pivisy, Groix, Lorient, Morbihan, Brittany, France

ⓘ 'Callainite'

Locality: Mané-er-Hroueg, Locmariaquer, Lorient, Morbihan, Brittany, France

References:

Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.p.761

ⓘ Cassiterite

Formula: SnO₂

Localities: Reported from at least 32 localities in this region.

ⓘ Cerussite

Formula: PbCO₃

Localities:

Lead mine, Saint-Maudé, Baud, Pontivy, Morbihan, Brittany, France
Mané Tanguy, Guern, Pontivy, Morbihan, Brittany, France
La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

ⓘ Chalcocite

Formula: Cu₂S

Localities:

Le Bonote, Berné, Pontivy, Morbihan, Brittany, France
Kerouallan, Keriar, Lignol, Pontivy, Morbihan, Brittany, France
La Telhaie, Guer, Vannes, Morbihan, Brittany, France

ⓘ Chalcopyrite

Formula: CuFeS₂

Localities: Reported from at least 25 localities in this region.

ⓘ Chamosite

Formula: Fe²⁺₅Al(AlSi₃O₁₀)(OH)₈

Localities:

Groix, Lorient, Morbihan, Brittany, France
Le Ruello, Sainte-Brigitte, Pontivy, Morbihan, Brittany, France

ⓘ Chernikovite

Formula: (H₃O)₂(UO₂)₂(PO₄)₂ · 6H₂O

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

(1998) La Radioactivité et les Minéraux Uranifères Français. Le Règne Minéral - Hors Série 4. Les Éditions du Piat

ⓘ 'Chlorite Group'

Localities: Reported from at least 32 localities in this region.

ⓘ Chloritoid

Formula: Fe²⁺Al₂O(SiO₄)(OH)₂

Localities: Reported from at least 22 localities in this region.

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

Localities:

Cromenac'h beach alluvials (Cromenac'h West), Ambon, Vannes, Morbihan, Brittany, France
Bétahon beach alluvials (Cromenac'h East), Ambon, Vannes, Morbihan, Brittany, France
Les Poulains islands creek alluvials, Sauzon, Lorient, Morbihan, Brittany, France

ⓘ Chrysoberyl

Formula: BeAl₂O₄

Locality: Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France

References:

PIERROT, R., CHAURIS, L., LAFORET, C., PILLARD, F. (1980) Inventaire Minéralogique de la France N°9, Morbihan, Editions du BRGM, p. 179.

CHAURIS L. (1982) - Les sables lourds des plages du Mor Bras – Introduction à l’étude des placers littoraux en Bretagne Méridionale, Bull. Soc. Sc. nat. Ouest de la France, nouvelle série, tome 4, (1) p. 14.

ⓘ Chrysotile

Formula: Mg₃(Si₂O₅)(OH)₄

Locality: Tréhor, Pivisy, Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.295

ⓘ Clinochlore

Formula: Mg₅Al(AlSi₃O₁₀)(OH)₈

Localities:

Biléric, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Groix, Lorient, Morbihan, Brittany, France
Trou de l'Enfer (Pointe de l'Enfer), Pivisy, Groix, Lorient, Morbihan, Brittany, France
Locqueltas-Kermarec, Primiture, Groix, Lorient, Morbihan, Brittany, France

ⓘ Clinochlore var. Pennine

Formula: Mg₅Al(AlSi₃O₁₀)(OH)₈

Locality: Locqueltas-Kermarec, Primiture, Groix, Lorient, Morbihan, Brittany, France

References:

Belot, Victor R. (1978) Guide des minéraux, coquillages et fossiles: où les trouver en France, comment les reconnaître et les collectionner. Guides Horay.

ⓘ Clinochlore var. Ripidolite

Formula: (Mg,Fe,Al)₆(Si,Al)₄O₁₀(OH)₈

Localities:

Biléric, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Groix, Lorient, Morbihan, Brittany, France
Trou de l'Enfer (Pointe de l'Enfer), Pivisy, Groix, Lorient, Morbihan, Brittany, France

ⓘ Clinochlore var. Sheridanite

Formula: (Mg,Al,Fe)₆(Si,Al)₄O₁₀(OH)₈

Locality: Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.294

ⓘ Clinozoisite

Formula: (CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)

Localities:

Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France
Cromenac'h beach alluvials (Cromenac'h West), Ambon, Vannes, Morbihan, Brittany, France
Trévenaste beach alluvials, Sarzeau, Vannes, Morbihan, Brittany, France
Locmaria, Lorient, Morbihan, Brittany, France

ⓘ Coffinite

Formula: U(SiO₄) · nH₂O

Localities:

Vouedec (Ouadec), Berné, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France
Kerroc'h, Guern, Pontivy, Morbihan, Brittany, France

ⓘ 'Columbite-Tantalite'

Locality: La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

References:

De Ascençao Guedes, Roger, Dain, Yannick, Gloaguen, Eric, Chiappero, Pierre-Jacques (2001) Les espèces minérales du district de La Villeder. Le Règne Minéral - Hors Série 7, Les Éditions du Piat. 43-60

ⓘ Copiapite

Formula: Fe²⁺Fe³⁺₄(SO₄)₆(OH)₂ · 20H₂O

Localities:

Bonne Nouvelle quarry, Le Calzat, Inzinzac-Lochrist, Lorient, Morbihan, Brittany, France
La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

ⓘ Coquimbite

Formula: AlFe₃(SO₄)₆(H₂O)₁₂ · 6H₂O

Locality: Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.162

ⓘ Cordierite

Formula: Mg₂Al₄Si₅O₁₈

Locality: Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France

ⓘ Corkite

Formula: PbFe³⁺₃(PO₄)(SO₄)(OH)₆

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Habit: ?

Colour: Green yellow

References:

Le Roc'h P., Bocianowski M. ((2001), La carrière de la Lande, Plumelin (Morbihan), Le Cahier des Micromonteurs, n°72, pp: 7-10

ⓘ Corundum

Formula: Al₂O₃

Localities: Reported from at least 29 localities in this region.

ⓘ Corundum var. Sapphire

Formula: Al₂O₃

Localities: Reported from at least 6 localities in this region.

ⓘ Cosalite

Formula: Pb₂Bi₂S₅

Localities:

Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France
Tréhiguier, Penestin, Vannes, Morbihan, Brittany, France
Trec'h beach, Primiture, Groix, Lorient, Morbihan, Brittany, France
Vouedec (Ouadec), Berné, Pontivy, Morbihan, Brittany, France

ⓘ Covellite

Formula: CuS

Localities: Reported from at least 14 localities in this region.

ⓘ Crichtonite

Formula: Sr(Mn,Y,U)Fe₂(Ti,Fe,Cr,V)₁₈(O,OH)₃₈

Locality: Pointe des Chats, Primiture, Groix, Lorient, Morbihan, Brittany, France

References:

Bariand, P., Cesbron, F., Geffroy, J. (n.d.) Les Mineraux, leurs gisements, leurs associations. Editions du BRGM.

ⓘ 'Crossite'

Locality: Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.277

ⓘ Cubanite

Formula: CuFe₂S₃

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Lead mine, Saint-Maudé, Baud, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France
Le Lédo, Saint-Servant, Pontivy, Morbihan, Brittany, France
La Telhaie, Guer, Vannes, Morbihan, Brittany, France

ⓘ Cuprite

Formula: Cu₂O

Localities:

Le Loch beach alluvial deposits, Guidel-Plages, Guidel, Lorient, Morbihan, Brittany, France
Kerlec'h (Kerler), Lignol, Pontivy, Morbihan, Brittany, France

ⓘ Curite

Formula: Pb₃(H₂O)₂[(UO₂)₄O₄(OH)₃]₂

Localities:

Kerségalec, Lignol, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

ⓘ Cyrilovite

Formula: NaFe³⁺₃(PO₄)₂(OH)₄ · 2H₂O

Locality: Pluherlin Castle, Rochefort-en-Terre, Vannes, Morbihan, Brittany, France

References:

Fontan and al. (1981). An aluminous cyrilovite, first link of a possible solid solutions serie between cyrilovite and wardite. A mineral found at Rochefort-en-Terre (Morbihan) and formely identified as cacoxenite is actually an aluminous cyrilovite. Bulletin de Minéralogie. 104, 785-792.

ⓘ Deerite

Formula: Fe²⁺₆Fe³⁺₃(Si₆O₁₇)O₃(OH)₅

Localities:

Groix, Lorient, Morbihan, Brittany, France
Le Rolaz, Primiture, Groix, Lorient, Morbihan, Brittany, France

ⓘ Dewindtite

Formula: H₂Pb₃(UO₂)₆O₄(PO₄)₄ · 12H₂O

Localities: Reported from at least 9 localities in this region.

ⓘ Diaphorite

Formula: Ag₃Pb₂Sb₃S₈

Locality: Coët Stival, Pontivy, Pontivy, Morbihan, Brittany, France

References:

Y. Moëlo, E. Makovicky and S. Karup-Moller : "Sulfures complexes plombo-argentifères : minéralogie et cristallochimie de la série andorite-fizelyite", Documents du BRGM N° 167, 1989.

ⓘ Dickite

Formula: Al₂(Si₂O₅)(OH)₄

Locality: Plage de la Mine d'Or South, Penestin, Vannes, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Digenite

Formula: Cu₉S₅

Localities:

Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France
La Telhaie, Guer, Vannes, Morbihan, Brittany, France

ⓘ Diopside

Formula: CaMgSi₂O₆

Localities:

Boëd Island, Sené, Vannes, Morbihan, Brittany, France
Locmiquel, Ile-aux-Moines, Vannes, Morbihan, Brittany, France
Roguédas, Arradon, Vannes, Morbihan, Brittany, France
Tréhiguier harbour amphibolite outcrops, Tréhiguier, Penestin, Vannes, Morbihan, Brittany, France

ⓘ Dolomite

Formula: CaMg(CO₃)₂

Localities:

Les Saisies, Primiture, Groix, Lorient, Morbihan, Brittany, France
La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Tréhor, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Biléric, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Poulmarh Quarry, Grand-Champ, Vannes, Morbihan, Brittany, France

ⓘ Dufrénite

Formula: Ca_0.5Fe²⁺Fe³⁺₅(PO₄)₄(OH)₆ · 2H₂O

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

References:

Pierre Le Roch & Jean-Marc Johannet collections

ⓘ Emplectite

Formula: CuBiS₂

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Enargite

Formula: Cu₃AsS₄

Locality: La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

References:

ⓘ Epidote

Formula: (CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)

Localities: Reported from at least 43 localities in this region.

ⓘ 'Fayalite-Forsterite Series'

Localities:

Cromenac'h beach alluvials (Cromenac'h West), Ambon, Vannes, Morbihan, Brittany, France
Bétahon beach alluvials (Cromenac'h East), Ambon, Vannes, Morbihan, Brittany, France
Trévenaste beach alluvials, Sarzeau, Vannes, Morbihan, Brittany, France

ⓘ 'Feldspar Group'

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Conleau, Vannes, Vannes, Morbihan, Brittany, France
Kerbourbon, Vannes, Vannes, Morbihan, Brittany, France
Keranvel, Guiscriff, Pontivy, Morbihan, Brittany, France

ⓘ Ferberite

Formula: FeWO₄

Locality: La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

References:

ⓘ Ferro-glaucophane

Formula: ◻Na₂(Fe²⁺₃Al₂)Si₈O₂₂(OH)₂

Locality: Groix, Lorient, Morbihan, Brittany, France

ⓘ Fizélyite

Formula: Ag₅Pb₁₄Sb₂₁S₄₈

Locality: Coët Stival, Pontivy, Pontivy, Morbihan, Brittany, France

References:

Y. Moëlo, E. Makovicky and S. Karup-Moller : "Sulfures complexes plombo-argentifères : minéralogie et cristallochimie de la série andorite-fizelyite", Documents du BRGM N° 167, 1989.

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France

ⓘ Fluorapatite var. Carbonate-rich Fluorapatite

Formula: Ca₅(PO₄,CO₃)₃(F,O)

Locality: Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France

References:

Périnet, François (n.d.) Personal communication.

ⓘ Fluorite

Formula: CaF₂

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Quily quarry, Quily, Pontivy, Morbihan, Brittany, France
Ile-aux-Moines, Vannes, Morbihan, Brittany, France
Poulmarh Quarry, Grand-Champ, Vannes, Morbihan, Brittany, France

ⓘ Forsterite

Formula: Mg₂(SiO₄)

Locality: Les Grands Sables beach alluvials, Les Grands Sables, Primiture, Groix, Lorient, Morbihan, Brittany, France

References:

Chauris L. (1982), Les sables lourds des plages du Mor Bras – Introduction à l’étude des placers littoraux en Bretagne Méridionale, Bull. Soc. Sc.nat.Ouest de la France, nouvelle série, tome 4, (1), p. 37.

ⓘ Forsterite var. Peridot

Formula: Mg₂SiO₄

Locality: Les Grands Sables beach alluvials, Les Grands Sables, Primiture, Groix, Lorient, Morbihan, Brittany, France

References:

ⓘ Fourmarierite

Formula: Pb(UO₂)₄O₃(OH)₄ · 4H₂O

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

(1998) La Radioactivité et les Minéraux Uranifères Français. Le Règne Minéral - Hors Série 4. Les Éditions du Piat

ⓘ 'Freibergite Subgroup'

Formula: (Ag₆,[Ag₆]⁴⁺)(Cu₄ C²⁺₂)Sb₄S₁₂S_0-1

Locality: La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

References:

ⓘ Gahnite

Formula: ZnAl₂O₄

Localities:

Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France
La Chapelle-Saint-Clair, Limerzel, Vannes, Morbihan, Brittany, France
Aplitic granite outcrop, Limerzel, Vannes, Morbihan, Brittany, France

ⓘ Galena

Formula: PbS

Localities: Reported from at least 26 localities in this region.

ⓘ 'Garnet Group'

Formula: X₃Z₂(SiO₄)₃

Localities: Reported from at least 58 localities in this region.

ⓘ 'Gigantolite'

Locality: Conleau, Vannes, Vannes, Morbihan, Brittany, France

References:

Lacroix, A. (1893) Minéralogie de la France et de ses colonies Vol. 1. Library Polytechnique, Paris. p.521

ⓘ 'Glauconite'

Formula: K_0.60-0.85(Fe³⁺,Mg,Al)₂(Si,Al)₄O₁₀](OH)₂

Localities:

La Mine d'Or beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France
Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France

ⓘ Glaucophane

Formula: ◻Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂

Localities: Reported from at least 41 localities in this region.

ⓘ Goethite

Formula: Fe³⁺O(OH)

Localities: Reported from at least 13 localities in this region.

ⓘ Gorceixite

Formula: BaAl₃(PO₄)(PO₃OH)(OH)₆

Localities:

Cromenac'h beach alluvials (Cromenac'h West), Ambon, Vannes, Morbihan, Brittany, France
Trévenaste beach alluvials, Sarzeau, Vannes, Morbihan, Brittany, France

ⓘ Graphite

Formula: C

Localities: Reported from at least 22 localities in this region.

ⓘ Greenalite

Formula: (Fe²⁺,Fe³⁺)_2-3Si₂O₅(OH)₄

Localities:

Tréhor, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Le Ruello, Sainte-Brigitte, Pontivy, Morbihan, Brittany, France

ⓘ Greenockite

Formula: CdS

Locality: La Telhaie, Guer, Vannes, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.

ⓘ Greigite

Formula: Fe²⁺Fe³⁺₂S₄

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Grossular

Formula: Ca₃Al₂(SiO₄)₃

Localities:

Tréhiguier harbour amphibolite outcrops, Tréhiguier, Penestin, Vannes, Morbihan, Brittany, France
Les Saisies, Primiture, Groix, Lorient, Morbihan, Brittany, France

ⓘ Grunerite

Formula: ◻Fe²⁺₂Fe²⁺₅(Si₈O₂₂)(OH)₂

Locality: Le Rolaz, Primiture, Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.275

ⓘ 'Gummite'

Localities: Reported from at least 20 localities in this region.

ⓘ 'Gummite var. Coracite'

Localities:

Prat-Mérien, Persquen, Pontivy, Morbihan, Brittany, France
Kerrivalain, Melrand, Pontivy, Morbihan, Brittany, France
Kerségalec, Lignol, Pontivy, Morbihan, Brittany, France
Le Bonote, Berné, Pontivy, Morbihan, Brittany, France

Description: In granite arenite and in cracks.

ⓘ Gypsum

Formula: CaSO₄ · 2H₂O

Localities:

Brouel, Ile-aux-Moines, Vannes, Morbihan, Brittany, France
Saint-Jean-Brévelay, Pontivy, Morbihan, Brittany, France
La Mine d'Or beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France
Taillefer point, Le Palais, Lorient, Morbihan, Brittany, France
La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

ⓘ Hectorite

Formula: Na_0.3(Mg,Li)₃(Si₄O₁₀)(F,OH)₂

Locality: Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.292

ⓘ Hedenbergite

Formula: CaFe²⁺Si₂O₆

Locality: Port-Navalo, Arzon, Vannes, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.272

ⓘ Hematite

Formula: Fe₂O₃

Localities: Reported from at least 18 localities in this region.

ⓘ Hinsdalite

Formula: PbAl₃(PO₄)(SO₄)(OH)₆

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Habit: Ball

Colour: white to pale pink

References:

Le Roc'h P., Bocianowski M. ((2001), La carrière de la Lande, Plumelin (Morbihan), Le Cahier des Micromonteurs, n°72, pp: 7-10

ⓘ 'Hornblende Root Name Group'

Formula: ◻Ca₂(C²⁺₄C³⁺)(AlSi₇O₂₂)W₂

Localities:

Tréhiguier harbour amphibolite outcrops, Tréhiguier, Penestin, Vannes, Morbihan, Brittany, France
Pointe des Chats, Primiture, Groix, Lorient, Morbihan, Brittany, France
Ile-d'Arz, Vannes, Morbihan, Brittany, France

ⓘ Hübnerite

Formula: MnWO₄

Localities:

Tromeur, Lizio, Vannes, Morbihan, Brittany, France
Tromeur mill, Sérent, Vannes, Morbihan, Brittany, France

Description: Laths up to 5 centimeters long.

ⓘ 'Hypersthene'

Formula: (Mg,Fe)SiO₃

Locality: Ile-d'Houat, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.273

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

Localities: Reported from at least 46 localities in this region.

ⓘ Jacobsite

Formula: Mn²⁺Fe³⁺₂O₄

Locality: Les Saisies, Primiture, Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.203

ⓘ Jadeite

Formula: Na(Al,Fe³⁺)Si₂O₆

Localities:

Groix, Lorient, Morbihan, Brittany, France
Port-Tudy, Primiture, Groix, Lorient, Morbihan, Brittany, France
Locmaria, Lorient, Morbihan, Brittany, France
Le Gripp, Primiture, Groix, Lorient, Morbihan, Brittany, France

ⓘ Jamesonite

Formula: Pb₄FeSb₆S₁₄

Locality: La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

References:

ⓘ Jarosite

Formula: KFe³⁺₃(SO₄)₂(OH)₆

Localities:

Trou du Tonnerre, Pivisy, Groix, Lorient, Morbihan, Brittany, France
La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

ⓘ Johannite

Formula: Cu(UO₂)₂(SO₄)₂(OH)₂ · 8H₂O

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

(1998) La Radioactivité et les Minéraux Uranifères Français. Le Règne Minéral - Hors Série 4. Les Éditions du Piat

ⓘ Kaolinite

Formula: Al₂(Si₂O₅)(OH)₄

Localities: Reported from at least 10 localities in this region.

ⓘ Kasolite

Formula: Pb(UO₂)(SiO₄) · H₂O

Localities:

Kerségalec, Lignol, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

ⓘ 'K Feldspar'

Locality: La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

References:

ⓘ 'K Feldspar var. Adularia'

Formula: KAlSi₃O₈

Locality: La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

References:

ⓘ Kobellite

Formula: Pb₂₂Cu₄(Bi,Sb)₃₀S₆₉

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Kolbeckite

Formula: ScPO₄ · 2H₂O

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

References:

Boisson, J-M., Leconte, J. (2020). Analyses 2019-MNHN-Micromonteurs. La Revue des Micromonteurs n°31, 3-38.

ⓘ Kyanite

Formula: Al₂(SiO₄)O

Localities: Reported from at least 33 localities in this region.

ⓘ Lawsonite

Formula: CaAl₂(Si₂O₇)(OH)₂ · H₂O

Localities: Reported from at least 7 localities in this region.

ⓘ Lepidocrocite

Formula: Fe³⁺O(OH)

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Habit: Bright flake

Colour: Brown-red

References:

Le Roc'h P., Bocianowski M. ((2001), La carrière de la Lande, Plumelin (Morbihan), Le Cahier des Micromonteurs, n°72, pp: 7-10

ⓘ Leucophosphite ?

Formula: KFe³⁺₂(PO₄)₂(OH) · 2H₂O

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Habit: Losange shape crystals

Colour: colorless to whitish

References:

Pierre Le Roch & Jean-Marc Johannet collections

ⓘ 'Leucoxene'

Localities: Reported from at least 9 localities in this region.

ⓘ 'Limonite'

Localities: Reported from at least 15 localities in this region.

ⓘ Löllingite

Formula: FeAs₂

Locality: Grand-Pont, Le Faouët, Pontivy, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.40

ⓘ Mackinawite

Formula: FeS

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

Localities: Reported from at least 41 localities in this region.

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Groix, Lorient, Morbihan, Brittany, France
Le Loch beach alluvial deposits, Guidel-Plages, Guidel, Lorient, Morbihan, Brittany, France
Biléric, Pivisy, Groix, Lorient, Morbihan, Brittany, France

ⓘ Malhmoodite

Formula: FeZr(PO₄)₂ · 4H₂O

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

References:

Fourcault J.-M. (2021). Morbihan : la kolbeckite et la malhmoodite de la Lande. Le Règne Minéral n°159: 44.

ⓘ Manganite

Formula: Mn³⁺O(OH)

Locality: Beg Melen, Pivisy, Groix, Lorient, Morbihan, Brittany, France

References:

Lacroix, A. (1907) Minéralogie de la France et de ses colonies Vol. 3. Library Polytechnique, Paris. pp.354-355

ⓘ Marcasite

Formula: FeS₂

Localities: Reported from at least 19 localities in this region.

Habit: Tabular prism

Colour: Black

ⓘ Matildite

Formula: AgBiS₂

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

Description: Se-rich, originally considered as schapbachite

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Melanterite

Formula: Fe²⁺(H₂O)₆(SO₄) · H₂O

Locality: Vouedec (Ouadec), Berné, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ 'Melnikovite'

Localities:

Ty-Gallen, Bubry, Lorient, Morbihan, Brittany, France
Mané Tanguy, Guern, Pontivy, Morbihan, Brittany, France
Kersquer (Kercher), Persquen, Pontivy, Morbihan, Brittany, France

ⓘ Meta-autunite

Formula: Ca(UO₂)₂(PO₄)₂ · 6H₂O

Localities:

Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France
Kerhuennec, Plouay, Lorient, Morbihan, Brittany, France

ⓘ Metatorbernite

Formula: Cu(UO₂)₂(PO₄)₂ · 8H₂O

Localities:

Vouedec (Ouadec), Berné, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

ⓘ Metauranocircite

Formula: Ba(UO₂)₂(PO₄)₂ · 7H₂O

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

ⓘ Metavoltine

Formula: K₂Na₆Fe²⁺Fe³⁺₆O₂(SO₄)₁₂ · 18H₂O

Locality: Taillefer point, Le Palais, Lorient, Morbihan, Brittany, France

Colour: Deep yellow

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ 'Mica Group'

Localities: Reported from at least 6 localities in this region.

ⓘ 'Mica Group var. Lepidomelane'

Locality: Trou du Tonnerre, Pivisy, Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.280

ⓘ Microcline

Formula: K(AlSi₃O₈)

Localities:

Les Eclopas, Saint-Jacut-les-Pins, Vannes, Morbihan, Brittany, France
La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France

ⓘ Molybdenite

Formula: MoS₂

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Boëd Island, Sené, Vannes, Morbihan, Brittany, France
Port-Navalo, Arzon, Vannes, Morbihan, Brittany, France
Poulmarh Quarry, Grand-Champ, Vannes, Morbihan, Brittany, France
Quily quarry, Quily, Pontivy, Morbihan, Brittany, France

ⓘ Monazite-(Ce)

Formula: Ce(PO₄)

Localities:

Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France
Cromenac'h beach alluvials (Cromenac'h West), Ambon, Vannes, Morbihan, Brittany, France
Bétahon beach alluvials (Cromenac'h East), Ambon, Vannes, Morbihan, Brittany, France
Trévenaste beach alluvials, Sarzeau, Vannes, Morbihan, Brittany, France
Quiberon beach, Quiberon, Lorient, Morbihan, Brittany, France

ⓘ 'Monazite Group'

Formula: REE(PO₄)

Localities: Reported from at least 25 localities in this region.

ⓘ Montmorillonite

Formula: (Na,Ca)_0.33(Al,Mg)₂(Si₄O₁₀)(OH)₂ · nH₂O

Localities:

Ty-Gallen, Bubry, Lorient, Morbihan, Brittany, France
Le Bonote, Berné, Pontivy, Morbihan, Brittany, France
Kerroc'h, Guern, Pontivy, Morbihan, Brittany, France

Description: Greenish-yellow to kaki coatings in cracks.

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

Localities: Reported from at least 18 localities in this region.

ⓘ Muscovite var. Fuchsite

Formula: K(Al,Cr)₃Si₃O₁₀(OH)₂

Locality: Biléric, Pivisy, Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.283

ⓘ Muscovite var. Illite

Formula: K_0.65Al_2.0[Al_0.65Si_3.35O₁₀](OH)₂

Locality: Taillefer point, Le Palais, Lorient, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Muscovite var. Mariposite

Formula: K(Al,Cr)₂(Al,Si)₄O₁₀(OH)₂

Locality: Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.283

ⓘ Muscovite var. Phengite

Formula: KAl_1.5(Mg,Fe)_0.5(Al_0.5Si_3.5O₁₀)(OH)₂

Localities:

Pointe des Chats, Primiture, Groix, Lorient, Morbihan, Brittany, France
Groix, Lorient, Morbihan, Brittany, France

ⓘ Muscovite var. Sericite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

Locality: Poulmarh Quarry, Grand-Champ, Vannes, Morbihan, Brittany, France

References:

inventaire minéralogique de la France n°9-BRGM

ⓘ Nacrite

Formula: Al₂(Si₂O₅)(OH)₄

Locality: La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

References:

ⓘ Native Antimony

Formula: Sb

Locality: Kerjulien, Guiscriff, Pontivy, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.38

ⓘ Native Bismuth

Formula: Bi

Localities: Reported from at least 6 localities in this region.

ⓘ Native Copper

Formula: Cu

Localities:

Le Bonote, Berné, Pontivy, Morbihan, Brittany, France
Kerlec'h (Kerler), Lignol, Pontivy, Morbihan, Brittany, France

Description: In gummite or in limonite+autunite.

ⓘ Native Gold

Formula: Au

Localities: Reported from at least 15 localities in this region.

ⓘ Native Platinum

Formula: Pt

Localities:

Penestin, Vannes, Morbihan, Brittany, France
La Mine d'Or beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France

ⓘ Native Selenium

Formula: Se

Locality: Le Bonote, Berné, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Native Silver

Formula: Ag

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Kerno, Ile-aux-Moines, Vannes, Morbihan, Brittany, France

ⓘ Native Sulphur

Formula: S₈

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

ⓘ Natrodufrénite (TL)

Formula: NaFe³⁺Fe³⁺₅(PO₄)₄O(OH)₅(H₂O)₂

Localities:

Pluherlin Castle, Rochefort-en-Terre, Vannes, Morbihan, Brittany, France
La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Type Locality: Pluherlin Castle, Rochefort-en-Terre, Vannes, Morbihan, Brittany, France

ⓘ Naumannite

Formula: Ag₂Se

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Ningyoite

Formula: (U,Ca,Ce)₂(PO₄)₂ · 1-2H₂O

Localities:

Kerlec'h (Kerler), Lignol, Pontivy, Morbihan, Brittany, France
Kerroc'h, Guern, Pontivy, Morbihan, Brittany, France
Ty-Gallen, Bubry, Lorient, Morbihan, Brittany, France

ⓘ Omphacite

Formula: (Na_aCa_bFe²⁺_cMg_d)(Al_eFe³⁺_fFe²⁺_gMg_h)Si₂O₆

Localities:

Porh Morvil creek, Primiture, Groix, Lorient, Morbihan, Brittany, France
Ile-d'Arz, Vannes, Morbihan, Brittany, France
Porh Giguéou, Locmaria, Primiture, Groix, Lorient, Morbihan, Brittany, France

ⓘ Opal

Formula: SiO₂ · nH₂O

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Orthoclase

Formula: K(AlSi₃O₈)

Localities:

Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France
Trou du Lion, Kerroc'h, Ploemeur, Lorient, Morbihan, Brittany, France
Ile-d'Arz, Vannes, Morbihan, Brittany, France

ⓘ Paracoquimbite

Formula: Fe₄(SO₄)₆(H₂O)₁₂ · 6H₂O

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Paragonite

Formula: NaAl₂(AlSi₃O₁₀)(OH)₂

Localities:

Groix, Lorient, Morbihan, Brittany, France
Pointe des Chats, Primiture, Groix, Lorient, Morbihan, Brittany, France
Beg er Vir (Poulziorec), Pivisy, Groix, Lorient, Morbihan, Brittany, France

ⓘ Parsonsite

Formula: Pb₂(UO₂)(PO₄)₂

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

Lukas, Yann (1978) Roches et minéraux de Bretagne. Ouest France. p.1-33.

Belot, Victor R. (1978) Guide des minéraux, coquillages et fossiles: où les trouver en France, comment les reconnaître et les collectionner. Guides Horay.

(1998) La Radioactivité et les Minéraux Uranifères Français. Le Règne Minéral - Hors Série 4. Les Éditions du Piat

ⓘ Pearceite

Formula: [Ag₆As₂S₇][Ag₉CuS₄]

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Pentlandite

Formula: (Ni_xFe_y)_Σ9S₈

Locality: Boëd Island, Sené, Vannes, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.61

ⓘ 'Petroleum var. Bitumen'

Locality: Ty-Gallen, Bubry, Lorient, Morbihan, Brittany, France

Description: Thucolite. Associated with pyrite.

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Pharmacosiderite

Formula: KFe³⁺₄(AsO₄)₃(OH)₄ · 6-7H₂O

Locality: La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

References:

ⓘ Phenakite

Formula: Be₂SiO₄

Locality: La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

References:

ⓘ Phosphuranylite

Formula: KCa(H₃O)₃(UO₂)₇(PO₄)₄O₄ · 8H₂O

Localities: Reported from at least 7 localities in this region.

ⓘ Piemontite

Formula: (CaCa)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)

Locality: Les Saisies, Primiture, Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.203

ⓘ Plagionite

Formula: Pb₅Sb₈S₁₇

Locality: Kerjulien, Guiscriff, Pontivy, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.81

ⓘ Plumbogummite

Formula: PbAl₃(PO₄)(PO₃OH)(OH)₆

Locality: Pohr-Pimpec, Kernascleden, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Prehnite

Formula: Ca₂Al₂Si₃O₁₀(OH)₂

Locality: Roguédas, Arradon, Vannes, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.278

ⓘ 'Psilomelane'

Localities:

Pen Men, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Les Saisies, Primiture, Groix, Lorient, Morbihan, Brittany, France

ⓘ Pyrite

Formula: FeS₂

Localities: Reported from at least 66 localities in this region.

Habit: Cube

Colour: Yellow

ⓘ Pyrolusite

Formula: Mn⁴⁺O₂

Localities:

Gadoéric, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Biléric, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Beg Melen, Pivisy, Groix, Lorient, Morbihan, Brittany, France

ⓘ Pyromorphite

Formula: Pb₅(PO₄)₃Cl

Localities:

La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France
Vouedec (Ouadec), Berné, Pontivy, Morbihan, Brittany, France
Lead mine, Saint-Maudé, Baud, Pontivy, Morbihan, Brittany, France
Le Loch beach alluvial deposits, Guidel-Plages, Guidel, Lorient, Morbihan, Brittany, France
La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

Habit: Elongated xl

Colour: White

ⓘ Pyrostilpnite

Formula: Ag₃SbS₃

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Description: analysed by Bertrand Devouard, University of Clermont-Ferrand

References:

collect. : p le roch

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

Localities: Reported from at least 17 localities in this region.

ⓘ Pyroxmangite

Formula: Mn²⁺SiO₃

Locality: Les Saisies, Primiture, Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.203

ⓘ Pyrrhotite

Formula: Fe_1-xS

Localities: Reported from at least 13 localities in this region.

ⓘ Quartz

Formula: SiO₂

Localities: Reported from at least 68 localities in this region.

ⓘ Quartz var. Agate

Formula: SiO₂

Locality: Ile-d'Arz, Vannes, Morbihan, Brittany, France

References:

Olivier Mével specimen

ⓘ Quartz var. Amethyst

Formula: SiO₂

Locality: Kergantic kaolin quarry (Arvor kaolin quarry), Ploemeur, Lorient, Morbihan, Brittany, France

References:

Alain Guillet collection

ⓘ Quartz var. Chalcedony

Formula: SiO₂

Localities: Reported from at least 8 localities in this region.

ⓘ Quartz var. Eisenkiesel

Formula: SiO₂

Locality: Kergantic kaolin quarry (Arvor kaolin quarry), Ploemeur, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.110

ⓘ Quartz var. Rock Crystal

Formula: SiO₂

Locality: Ploemeur, Lorient, Morbihan, Brittany, France

Description: Listed as "[quartz en] cristaux hyalins", due to the decomposition of the granite.

References:

Lukas, Yann (1978) Roches et minéraux de Bretagne. Ouest France. p.1-33.p.16

ⓘ Quartz var. Smoky Quartz

Formula: SiO₂

Localities:

Boisel quarry, Malestroit, Questembert, Vannes, Morbihan, Brittany, France
Kergantic kaolin quarry (Arvor kaolin quarry), Ploemeur, Lorient, Morbihan, Brittany, France
Quily quarry, Quily, Pontivy, Morbihan, Brittany, France

ⓘ Renardite

Formula: Pb(UO₂)₄(PO₄)₂(OH)₄ · H₂O

Locality: Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

References:

Lukas, Yann (1978) Roches et minéraux de Bretagne. Ouest France. p.1-33.

ⓘ Roquesite

Formula: CuInS₂

Locality: La Telhaie, Guer, Vannes, Morbihan, Brittany, France

Description: Inclusions in galena.

References:

Cantinolle, Patrice, Laforêt, Claude, Maurel, Colette, Picot, Paul, Grangeon, Jean (1985) Contribution à la minéralogie de l'indium : Découverte en France de deux nouveaux sulfures d'indium et de deux nouvelles occurrences de roquesite. Bulletin de Minéralogie, 108 (2) 245-248 doi:10.3406/bulmi.1985.7873

Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (1990) Handbook of Mineralogy Vol. 1 - Elements, Sulfides, Sulfosalts. Mineral Data Publishing, Tucson, Arizona.

ⓘ Röntgenite-(Ce)

Formula: Ca₂(Ce,La)₃(CO₃)₅F₃

Locality: Poulmarh Quarry, Grand-Champ, Vannes, Morbihan, Brittany, France

References:

Pierre le Roc'h collection (analyzed by Yves Lulzac, BRGM Nantes, end May 2009)

ⓘ Rutile

Formula: TiO₂

Localities: Reported from at least 49 localities in this region.

Habit: Fiber

Colour: Brown

ⓘ Rutile var. Sagenite (of Saussure)

Formula: TiO₂

Locality: Conveau quarry, Gourin, Pontivy, Morbihan, Brittany, France

References:

Pierre Le Roch

ⓘ Sabugalite

Formula: HAl(UO₂)₄(PO₄)₄ · 16H₂O

Localities: Reported from at least 10 localities in this region.

ⓘ Saléeite

Formula: Mg(UO₂)₂(PO₄)₂ · 10H₂O

Localities:

Vouedec (Ouadec), Berné, Pontivy, Morbihan, Brittany, France
Le Bonote, Berné, Pontivy, Morbihan, Brittany, France
Berné, Pontivy, Morbihan, Brittany, France

ⓘ Saponite

Formula: Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O

Locality: Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.292

ⓘ Scheelite

Formula: Ca(WO₄)

Localities: Reported from at least 11 localities in this region.

ⓘ Schorl

Formula: NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

Localities:

Plage de la Mine d'Or South, Penestin, Vannes, Morbihan, Brittany, France
Gâvres beach alluvial deposits, Port-Louis, Lorient, Morbihan, Brittany, France
La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Kerhilio, Baud, Pontivy, Morbihan, Brittany, France
Le Loch beach alluvial deposits, Guidel-Plages, Guidel, Lorient, Morbihan, Brittany, France

ⓘ Scorodite

Formula: Fe³⁺AsO₄ · 2H₂O

Localities:

La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France
Trec'h beach, Primiture, Groix, Lorient, Morbihan, Brittany, France
La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Kerno, Ile-aux-Moines, Vannes, Morbihan, Brittany, France

Habit: Ball

Colour: Pale blue-green

ⓘ Semseyite

Formula: Pb₉Sb₈S₂₁

Locality: Coët Stival, Pontivy, Pontivy, Morbihan, Brittany, France

References:

Y. Moëlo, E. Makovicky and S. Karup-Moller : "Sulfures complexes plombo-argentifères : minéralogie et cristallochimie de la série andorite-fizelyite", Documents du BRGM N° 167, 1989.

ⓘ 'Serpentine Subgroup'

Formula: D₃[Si₂O₅](OH)₄

Localities:

Locqueltas-Kermarec, Primiture, Groix, Lorient, Morbihan, Brittany, France
Tréhor, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Le Fons, Pivisy, Groix, Lorient, Morbihan, Brittany, France
Port St-Nicolas (Pointe St-Nicolas), Pivisy, Groix, Lorient, Morbihan, Brittany, France

ⓘ Siderite

Formula: FeCO₃

Localities: Reported from at least 7 localities in this region.

ⓘ Sideronatrite

Formula: Na₂Fe(SO₄)₂(OH) · 3H₂O

Locality: Taillefer point, Le Palais, Lorient, Morbihan, Brittany, France

Colour: pale yellow, cream tint.

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Sillimanite

Formula: Al₂(SiO₄)O

Localities: Reported from at least 23 localities in this region.

ⓘ Sklodowskite

Formula: Mg(UO₂)₂(SiO₃OH)₂ · 6H₂O

Localities:

Le Bonote, Berné, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

ⓘ Skutterudite

Formula: CoAs₃

Locality: Boëd Island, Sené, Vannes, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.64

ⓘ Smythite

Formula: (Fe,Ni)_3+xS₄ (x=0-0.3)

Locality: Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.60

ⓘ Spessartine

Formula: Mn²⁺₃Al₂(SiO₄)₃

Localities:

Les Saisies, Primiture, Groix, Lorient, Morbihan, Brittany, France
Porh Morvil creek, Primiture, Groix, Lorient, Morbihan, Brittany, France
Nosterven (Porh Coustic; Les Sables Rouges), Primiture, Groix, Lorient, Morbihan, Brittany, France
Port Mélite, Primiture, Groix, Lorient, Morbihan, Brittany, France
Spernec Point, Primiture, Groix, Lorient, Morbihan, Brittany, France

ⓘ Sphalerite

Formula: ZnS

Localities: Reported from at least 21 localities in this region.

ⓘ Sphalerite var. Marmatite

Formula: (Zn,Fe)S

Locality: Vouedec (Ouadec), Berné, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Spinel

Formula: MgAl₂O₄

Localities: Reported from at least 13 localities in this region.

ⓘ Stannite

Formula: Cu₂FeSnS₄

Localities:

Truda, Limerzel, Vannes, Morbihan, Brittany, France
La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France
Tréhiguier, Penestin, Vannes, Morbihan, Brittany, France

ⓘ Staurolite

Formula: Fe²⁺₂Al₉Si₄O₂₃(OH)

Localities: Reported from at least 38 localities in this region.

ⓘ Stibiconite

Formula: Sb³⁺Sb⁵⁺₂O₆(OH)

Locality: Kerjulien, Guiscriff, Pontivy, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.70

ⓘ Stibnite

Formula: Sb₂S₃

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Coët Stival, Pontivy, Pontivy, Morbihan, Brittany, France
Le Palais, Lorient, Morbihan, Brittany, France
Kerjulien, Guiscriff, Pontivy, Morbihan, Brittany, France

ⓘ Stilpnomelane

Formula: K₄Fe²⁺₄₈[Si₆₄Al₈]O₁₆₄(OH)₅₂ · nH₂O

Localities:

Groix, Lorient, Morbihan, Brittany, France
Spernec Point, Primiture, Groix, Lorient, Morbihan, Brittany, France
Port Mélite, Primiture, Groix, Lorient, Morbihan, Brittany, France
Locqueltas-Kermarec, Primiture, Groix, Lorient, Morbihan, Brittany, France

ⓘ Stolzite ?

Formula: Pb(WO₄)

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

References:

Pierre Le Roch (visual ID

not analysed)

✪ Strengite

Formula: FePO₄ · 2H₂O

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Habit: Spheroidal agregate

Colour: White

References:

Le Roc'h P., Bocianowski M. ((2001), La carrière de la Lande, Plumelin (Morbihan), Le Cahier des Micromonteurs, n°72, pp: 7-10

ⓘ Stromeyerite

Formula: AgCuS

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Le Hangouët, Lizio, Vannes, Morbihan, Brittany, France

ⓘ Symplesite

Formula: Fe²⁺₃(AsO₄)₂ · 8H₂O

Locality: La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

References:

ⓘ Szomolnokite

Formula: FeSO₄ · H₂O

Locality: Kerroc'h, Guern, Pontivy, Morbihan, Brittany, France

ⓘ Talc

Formula: Mg₃Si₄O₁₀(OH)₂

Locality: Beg Melen, Pivisy, Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.295

ⓘ Tephroite

Formula: Mn²⁺₂(SiO₄)

Locality: Les Saisies, Primiture, Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.203

ⓘ Tetradymite

Formula: Bi₂Te₂S

Localities:

Brouel, Ile-aux-Moines, Vannes, Morbihan, Brittany, France
La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

ⓘ 'Tetrahedrite Group'

Formula: ^M2(A₆)^M1(B₄ C₂)^X3(D₄)^S1(Y₁₂)^S2(Z)

Localities:

Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France
Kerroc'h, Guern, Pontivy, Morbihan, Brittany, France
Vouedec (Ouadec), Berné, Pontivy, Morbihan, Brittany, France

ⓘ Titanite

Formula: CaTiO(SiO₄)

Localities: Reported from at least 25 localities in this region.

ⓘ Topaz

Formula: Al₂(SiO₄)(F,OH)₂

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Pointe du Bile beach alluvial deposits, Penestin, Vannes, Morbihan, Brittany, France
Cromenac'h beach alluvials (Cromenac'h West), Ambon, Vannes, Morbihan, Brittany, France
Bétahon beach alluvials (Cromenac'h East), Ambon, Vannes, Morbihan, Brittany, France
Trévenaste beach alluvials, Sarzeau, Vannes, Morbihan, Brittany, France

ⓘ Torbernite

Formula: Cu(UO₂)₂(PO₄)₂ · 12H₂O

Localities: Reported from at least 14 localities in this region.

ⓘ 'Tourmaline'

Formula: AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z

Localities: Reported from at least 43 localities in this region.

ⓘ Tungstite

Formula: WO₃ · H₂O

Locality: Quinquis Glueïs, Le Saint, Pontivy, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.143

ⓘ Ullmannite

Formula: NiSbS

Locality: La Telhaie, Guer, Vannes, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.

ⓘ Uraninite

Formula: UO₂

Localities: Reported from at least 26 localities in this region.

ⓘ Uraninite var. Pitchblende

Formula: UO₂

Localities: Reported from at least 25 localities in this region.

ⓘ Uranocircite

Formula: Ba(UO₂)₂(PO₄)₂ · 10H₂O

Localities: Reported from at least 6 localities in this region.

ⓘ Uranophane

Formula: Ca(UO₂)₂(SiO₃OH)₂ · 5H₂O

Localities: Reported from at least 7 localities in this region.

ⓘ Uranopilite

Formula: (UO₂)₆(SO₄)O₂(OH)₆ · 14H₂O

Localities:

Le Bonote, Berné, Pontivy, Morbihan, Brittany, France
Quistiav (Quistiave), Guern, Pontivy, Morbihan, Brittany, France

ⓘ Uranosphaerite

Formula: Bi(UO₂)O₂(OH)

Localities:

Kerségalec, Lignol, Pontivy, Morbihan, Brittany, France
Kervegan, Guern, Pontivy, Morbihan, Brittany, France

Description: Yellow-brown to orange-red spherolites (1 mm diameter). R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Vanmeersscheite

Formula: U⁶⁺(UO₂)₃(PO₄)₂(OH)₆ · 4H₂O

Locality: Le Bonote, Berné, Pontivy, Morbihan, Brittany, France

References:

Deliens, Michel; Lheur, Cédric (2017) La vanmeersscheite du Bonote, près de Berné, Morbihan [Vanmeersscheite from Bonote, near Berné, Morbihan]. Le Règne Minéral, 23 (135). 55-56

ⓘ Vermiculite

Formula: Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O

Locality: Groix, Lorient, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.292

ⓘ Vesuvianite

Formula: Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉

Localities:

Roguédas, Arradon, Vannes, Morbihan, Brittany, France
Brouel, Ile-aux-Moines, Vannes, Morbihan, Brittany, France
Ile-aux-Moines, Vannes, Morbihan, Brittany, France

✪ Vivianite

Formula: Fe²⁺Fe²⁺₂(PO₄)₂ · 8H₂O

Locality: La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Habit: Radiated xl

Colour: Deep blue

References:

Le Roc'h P., Bocianowski M. ((2001), La carrière de la Lande, Plumelin (Morbihan), Le Cahier des Micromonteurs, n°72, pp: 7-10

ⓘ 'Wolframite Group'

Localities:

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France
Quinquis Glueïs, Le Saint, Pontivy, Morbihan, Brittany, France

ⓘ Wollastonite

Formula: Ca₃(Si₃O₉)

Localities:

Roguédas, Arradon, Vannes, Morbihan, Brittany, France
Boëd Island, Sené, Vannes, Morbihan, Brittany, France
Port-Navalo, Arzon, Vannes, Morbihan, Brittany, France

ⓘ Wölsendorfite

Formula: Pb₇(UO₂)₁₄O₁₉(OH)₄ · 12H₂O

Locality: Kerségalec, Lignol, Pontivy, Morbihan, Brittany, France

Description: Orange-red spherolites.

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Xenotime-(Y)

Formula: Y(PO₄)

Locality: Bétahon beach alluvials (Cromenac'h East), Ambon, Vannes, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Zeunerite

Formula: Cu(UO₂)₂(AsO₄)₂ · 12H₂O

Locality: Kerouallan, Keriar, Lignol, Pontivy, Morbihan, Brittany, France

References:

R. Pierrot, L. Chauris, C Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.

ⓘ Zinkenite

Formula: Pb₉Sb₂₂S₄₂

Locality: Kerjulien, Guiscriff, Pontivy, Morbihan, Brittany, France

References:

Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.70

ⓘ Zircon

Formula: Zr(SiO₄)

Localities: Reported from at least 31 localities in this region.

Gallery:

H₂Pb₃(UO₂)₆O₄(PO₄)₄ · 12H₂Oⓘ Dewindtite

Dewindtite, etc.

Kerségalec, Lignol, Pontivy, Morbihan, Brittany, France

Dewindtite, etc.

Kerségalec, Lignol, Pontivy, Morbihan, Brittany, France

Dewindtite, etc.

Kerségalec, Lignol, Pontivy, Morbihan, Brittany, France

◻Na₂(Fe²⁺₃Al₂)Si₈O₂₂(OH)₂ⓘ Ferro-glaucophane

Ferro-glaucophane

Groix, Lorient, Morbihan, Brittany, France

Ferro-glaucophane, etc.

Groix, Lorient, Morbihan, Brittany, France

Ferro-glaucophane, etc.

Groix, Lorient, Morbihan, Brittany, France

Ferro-glaucophane

Groix, Lorient, Morbihan, Brittany, France

Ferro-glaucophane, etc.

Groix, Lorient, Morbihan, Brittany, France

Ferro-glaucophane, etc.

Groix, Lorient, Morbihan, Brittany, France

Ferro-glaucophane

Groix, Lorient, Morbihan, Brittany, France

Ferro-glaucophane, etc.

Groix, Lorient, Morbihan, Brittany, France

MnWO₄ⓘ Hübnerite

Hübnerite

Tromeur, Lizio, Vannes, Morbihan, Brittany, France

Hübnerite

Tromeur, Lizio, Vannes, Morbihan, Brittany, France

Hübnerite

Tromeur, Lizio, Vannes, Morbihan, Brittany, France

ScPO₄ · 2H₂Oⓘ Kolbeckite

Kolbeckite

La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Kolbeckite

La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Kolbeckite

La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Fe_1-xSⓘ Pyrrhotite

Pyrrhotite

Quily quarry, Quily, Pontivy, Morbihan, Brittany, France

Pyrrhotite

Quily quarry, Quily, Pontivy, Morbihan, Brittany, France

Pyrrhotite

Quily quarry, Quily, Pontivy, Morbihan, Brittany, France

Fe³⁺AsO₄ · 2H₂Oⓘ Scorodite

Scorodite

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

Scorodite

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

Scorodite

La Villeder, Le Roc Saint-André, Pontivy, Morbihan, Brittany, France

Pb(WO₄)ⓘ Stolzite ?

Stolzite

La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Stolzite

La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Stolzite

La Lande quarry, Plumelin, Pontivy, Morbihan, Brittany, France

Cu(UO₂)₂(PO₄)₂ · 12H₂Oⓘ Torbernite

Torbernite

Sulliado, Persquen, Pontivy, Morbihan, Brittany, France

Torbernite

Sulliado, Persquen, Pontivy, Morbihan, Brittany, France

Torbernite

Sulliado, Persquen, Pontivy, Morbihan, Brittany, France

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Copper	1.AA.05	Cu
ⓘ	Native Gold	1.AA.05	Au
ⓘ	Native Silver	1.AA.05	Ag
ⓘ	Native Platinum	1.AF.10	Pt
ⓘ	Native Antimony	1.CA.05	Sb
ⓘ	Native Bismuth	1.CA.05	Bi
ⓘ	Graphite	1.CB.05a	C
ⓘ	Native Sulphur	1.CC.05	S₈
ⓘ	Native Selenium	1.CC.10	Se
Group 2 - Sulphides and Sulfosalts
ⓘ	Chalcocite	2.BA.05	Cu₂S
ⓘ	Digenite	2.BA.10	Cu₉S₅
ⓘ	Bornite	2.BA.15	Cu₅FeS₄
ⓘ	Acanthite	2.BA.35	Ag₂S
ⓘ	Stromeyerite	2.BA.40	AgCuS
ⓘ	Naumannite	2.BA.55	Ag₂Se
ⓘ	Pentlandite	2.BB.15	(Ni_xFe_y)_Σ9S₈
ⓘ	Covellite	2.CA.05a	CuS
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	var. Marmatite	2.CB.05a	(Zn,Fe)S
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Roquesite	2.CB.10a	CuInS₂
ⓘ	Stannite	2.CB.15a	Cu₂FeSnS₄
ⓘ	Greenockite	2.CB.45	CdS
ⓘ	Cubanite	2.CB.55a	CuFe₂S₃
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Smythite	2.CC.10	(Fe,Ni)_3+xS₄ (x=0-0.3)
ⓘ	Mackinawite	2.CC.25	FeS
ⓘ	Galena	2.CD.10	PbS
ⓘ	Greigite	2.DA.05	Fe²⁺Fe³⁺₂S₄
ⓘ	Bismuthinite	2.DB.05	Bi₂S₃
ⓘ	Stibnite	2.DB.05	Sb₂S₃
ⓘ	Tetradymite	2.DC.05	Bi₂Te₂S
ⓘ	Molybdenite	2.EA.30	MoS₂
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Marcasite	2.EB.10a	FeS₂
ⓘ	Löllingite	2.EB.15a	FeAs₂
ⓘ	Arsenopyrite	2.EB.20	FeAsS
ⓘ	Ullmannite	2.EB.25	NiSbS
ⓘ	Skutterudite	2.EC.05	CoAs₃
ⓘ	Pyrostilpnite	2.GA.10	Ag₃SbS₃
ⓘ	Bournonite	2.GA.50	PbCuSbS₃
ⓘ	'Freibergite Subgroup'	2.GB.05	(Ag₆,[Ag₆]⁴⁺)(Cu₄ C²⁺₂)Sb₄S₁₂S_0-1
ⓘ	Pearceite	2.GB.15	[Ag₆As₂S₇][Ag₉CuS₄]
ⓘ	Emplectite	2.HA.05	CuBiS₂
ⓘ	Aikinite	2.HB.05a	CuPbBiS₃
ⓘ	Kobellite	2.HB.10a	Pb₂₂Cu₄(Bi,Sb)₃₀S₆₉
ⓘ	Jamesonite	2.HB.15	Pb₄FeSb₆S₁₄
ⓘ	Plagionite	2.HC.10b	Pb₅Sb₈S₁₇
ⓘ	Semseyite	2.HC.10d	Pb₉Sb₈S₂₁
ⓘ	Matildite	2.JA.20	AgBiS₂
ⓘ	Diaphorite	2.JB.05	Ag₃Pb₂Sb₃S₈
ⓘ	Cosalite	2.JB.10	Pb₂Bi₂S₅
ⓘ	Zinkenite	2.JB.35a	Pb₉Sb₂₂S₄₂
ⓘ	Fizélyite	2.JB.40a	Ag₅Pb₁₄Sb₂₁S₄₈
ⓘ	Enargite	2.KA.05	Cu₃AsS₄
Group 3 - Halides
ⓘ	Fluorite	3.AB.25	CaF₂
Group 4 - Oxides and Hydroxides
ⓘ	Cuprite	4.AA.10	Cu₂O
ⓘ	Chrysoberyl	4.BA.05	BeAl₂O₄
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
ⓘ	Gahnite	4.BB.05	ZnAl₂O₄
ⓘ	Jacobsite	4.BB.05	Mn²⁺Fe³⁺₂O₄
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Spinel	4.BB.05	MgAl₂O₄
ⓘ	Corundum	4.CB.05	Al₂O₃
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Corundum var. Sapphire	4.CB.05	Al₂O₃
ⓘ	Crichtonite	4.CC.40	Sr(Mn,Y,U)Fe₂(Ti,Fe,Cr,V)₁₈(O,OH)₃₈
ⓘ	Quartz var. Agate	4.DA.05	SiO₂
ⓘ	var. Amethyst	4.DA.05	SiO₂
ⓘ	var. Chalcedony	4.DA.05	SiO₂
ⓘ		4.DA.05	SiO₂
ⓘ	var. Smoky Quartz	4.DA.05	SiO₂
ⓘ	var. Rock Crystal	4.DA.05	SiO₂
ⓘ	var. Eisenkiesel	4.DA.05	SiO₂
ⓘ	Opal	4.DA.10	SiO₂ · nH₂O
ⓘ	Cassiterite	4.DB.05	SnO₂
ⓘ	Pyrolusite	4.DB.05	Mn⁴⁺O₂
ⓘ	Rutile	4.DB.05	TiO₂
ⓘ	var. Sagenite (of Saussure)	4.DB.05	TiO₂
ⓘ	Ferberite	4.DB.30	FeWO₄
ⓘ	Hübnerite	4.DB.30	MnWO₄
ⓘ	'Wolframite Group'	4.DB.30 va
ⓘ	Anatase	4.DD.05	TiO₂
ⓘ	Brookite	4.DD.10	TiO₂
ⓘ	Stibiconite	4.DH.20	Sb³⁺Sb⁵⁺₂O₆(OH)
ⓘ	Uraninite var. Pitchblende	4.DL.05	UO₂
ⓘ		4.DL.05	UO₂
ⓘ	Goethite	4.FD.10	Fe³⁺O(OH)
ⓘ	Manganite	4.FD.15	Mn³⁺O(OH)
ⓘ	Lepidocrocite	4.FE.15	Fe³⁺O(OH)
ⓘ	Tungstite	4.FJ.10	WO₃ · H₂O
ⓘ	Fourmarierite	4.GB.25	Pb(UO₂)₄O₃(OH)₄ · 4H₂O
ⓘ	Wölsendorfite	4.GB.30	Pb₇(UO₂)₁₄O₁₉(OH)₄ · 12H₂O
ⓘ	Curite	4.GB.55	Pb₃(H₂O)₂[(UO₂)₄O₄(OH)₃]₂
ⓘ	Uranosphaerite	4.GB.65	Bi(UO₂)O₂(OH)
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Siderite	5.AB.05	FeCO₃
ⓘ	Ankerite	5.AB.10	Ca(Fe²⁺,Mg)(CO₃)₂
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
ⓘ	Cerussite	5.AB.15	PbCO₃
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
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Morbihan, Brittany, FranceiRegional Level TypesMorbihanDepartment BrittanyRegion FranceCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Morbihan, Brittany, France i
Regional Level Types
Morbihan Department
Brittany Region
France Country