Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Search FormMinerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

St Michael's Mount, Cornwall, England, UKi
Regional Level Types
St Michael's MountCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
02866770017614520388614.jpg
The Mount

St Michael's Mount, Cornwall, England, UK
00110130017271997111098.jpg
St Michael's Mount general view, in 2002.

St Michael's Mount, Cornwall, England, UK
06614890017271997121480.jpg
Beautiful Mount

St Michael's Mount, Cornwall, England, UK
02336150017614024917533.jpg
The Mount

St Michael's Mount, Cornwall, England, UK
00110130017271997111098.jpg
St Michael's Mount general view, in 2002.

St Michael's Mount, Cornwall, England, UK
06614890017271997121480.jpg
Beautiful Mount

St Michael's Mount, Cornwall, England, UK
05900530017614520387171.jpg
The Mount

St Michael's Mount, Cornwall, England, UK
00110130017271997111098.jpg
St Michael's Mount general view, in 2002.

St Michael's Mount, Cornwall, England, UK
Neighbouring regions:
Marazion, Cornwall, England, UK
Type:
Civil Parish
Mindat Locality ID:
1071
Long-form identifier:
mindat:1:2:1071:2
GUID (UUID V4):
0
Other Languages:
View 16 more...
Cornish:
Carrek Loos y'n Coos, Kernow, Pow Sows, Ruwvaneth Unys
French:
St Michael's Mount, Cornouailles, Angleterre, Royaume-Uni
German:
St. Michael’s Mount, Cornwall, England, Vereinigtes Königreich
Italian:
St Michael's Mount, Cornovaglia, Inghilterra, Regno Unito
Russian:
Сент-Майклз-Маунт, Корнуолл, Англия, Великобритания
Simplified Chinese:
聖邁克爾山, 康沃爾郡, 英格兰, 英国
Spanish:
St Michael's Mount, Cornualles, Inglaterra, Reino Unido
Basque:
St Michael's Mount, Kornualles, Ingalaterra, Erresuma Batua
Breton:
Karrek Loos y'n Koos, Kernev-Veur, Bro-Saoz, Rouantelezh-Unanet
Catalan:
St Michael's Mount, Cornualla, Anglaterra, Regne Unit
Cebuano:
St Michael's Mount, Cornwall, Inglatera, Hiniusang Gingharian
Danish:
St Michael's Mount, Cornwall, England, Storbritannien
Dutch:
St Michael's Mount, Cornwall, Engeland, Verenigd Koninkrijk
Esperanto:
Monto Sankta Mikaelo, Kornvalo, Anglio, Unuiĝinta Reĝlando
Estonian:
St Michael's Mount, Cornwall, Inglismaa, Suurbritannia
Hebrew:
גבעת סנט מייקל, קורנוול, אנגליה, הממלכה המאוחדת
Japanese:
セント・マイケルズ・マウント, コーンウォール, イングランド, イギリス
Latin:
Mons Sancti Michaelis , Cornubia, Anglia, Britanniarum regnum
Norwegian:
St Michael's Mount, Cornwall, England, Storbritannia
Norwegian (Nynorsk):
St Michael's Mount, Cornwall, England, Storbritannia
Polish:
St Michael's Mount, Kornwalia, Anglia, Wielka Brytania
Slovenian:
St. Michael's Mount, Cornwall, Anglija, Združeno kraljestvo Velike Britanije in Severne Irske
Swedish:
St Michael's Mount, Cornwall, England, Storbritannien


St Michael's Mount Civil Parish.

A vein of cassiterite runs out to sea from the seaward side of the mount.

Note: This is now a vigorously protected SSSI, so no collecting.

Geology:

"The mount is made of the uppermost part of a granite intrusion into metamorphosed Devonian mudstones or pelites. The granite is itself mineralised with a well-developed sheeted greisen vein system. Due to its geology the island's seaward side has been designated a Site of Special Scientific Interest since 1995.
There are two types of granite visible on the mount. Most of the intrusion is a tourmaline muscovite granite which is variably porphyritic. This is separated from a biotite muscovite granite by pegmatites." (Wikipedia)

Not to be confused with the " Mont Saint-Michel " in Normandy, France.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


20 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ Cassiterite
Formula: SnO2
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Cordierite
Formula: Mg2Al4Si5O18
ⓘ Fluorite
Formula: CaF2
ⓘ Galena
Formula: PbS
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Kësterite
Formula: Cu2ZnSnS4
Description: According to Moore and Howie (1984), kesterite is the most abundant tin-bearing sulfide at this locality. Most of the "stannite" previously reported is in fact misidentified kesterite, while true stannite is very rare and was detected in only two of more than 100 samples studied.
ⓘ 'Lepidolite'
ⓘ Löllingite
Formula: FeAs2
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Orthoclase
Formula: K(AlSi3O8)
ⓘ 'Pinite'
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Citrine
Formula: SiO2
ⓘ Quartz var. Rock Crystal
Formula: SiO2
ⓘ Quartz var. Rose Quartz
Formula: SiO2
ⓘ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Sphalerite
Formula: ZnS
ⓘ Stannite
Formula: Cu2FeSnS4
Description: According to Moore and Howie (1984), stannite is a rare mineral at this locality, which was detected in only two of more than 100 samples studied. In both cases, it formed a narrow rim between kesterite and quartz. Most of the "stannite" previously reported is in fact misidentified kesterite, while the "yellow stannite" reported by some authors proved to be stannoidite.
ⓘ Stannoidite
Formula: Cu+6Cu2+2(Fe2+,Zn)3Sn2S12
Description: According to Moore and Howie (1984), stannoidite occurs abundantly at this locality. Their results suggest that most of the "yellow stannite" previously reported is in fact stannoidite.
ⓘ Stibnite
Formula: Sb2S3
ⓘ Topaz
Formula: Al2(SiO4)(F,OH)2
ⓘ 'Wolframite Group'
ⓘ Zippeite
Formula: K3(UO2)4(SO4)2O3(OH) · 3H2O

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘKësterite2.CB.15aCu2ZnSnS4
ⓘStannite2.CB.15aCu2FeSnS4
ⓘStannoidite2.CB.15cCu+6Cu2+2(Fe2+,Zn)3Sn2S12
ⓘGalena2.CD.10PbS
ⓘStibnite2.DB.05Sb2S3
ⓘLöllingite2.EB.15aFeAs2
ⓘArsenopyrite2.EB.20FeAsS
Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘQuartz
var. Citrine		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘvar. Rose Quartz4.DA.05SiO2
ⓘvar. Rock Crystal4.DA.05SiO2
ⓘCassiterite4.DB.05SnO2
ⓘ'Wolframite Group'4.DB.30 va
Group 5 - Nitrates and Carbonates
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘZippeite7.EC.05K3(UO2)4(SO4)2O3(OH) · 3H2O
Group 9 - Silicates
ⓘTopaz9.AF.35Al2(SiO4)(F,OH)2
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘCordierite9.CJ.10Mg2Al4Si5O18
ⓘSchorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘOrthoclase9.FA.30K(AlSi3O8)
Unclassified
ⓘ'Lepidolite'-
ⓘ'Pinite'-
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ TopazAl2(SiO4)(F,OH)2
Hⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
BBoron
Bⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ CassiteriteSnO2
Oⓘ Quartz var. CitrineSiO2
Oⓘ CordieriteMg2Al4Si5O18
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ OrthoclaseK(AlSi3O8)
Oⓘ QuartzSiO2
Oⓘ Quartz var. Rose QuartzSiO2
Oⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ TopazAl2(SiO4)(F,OH)2
Oⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
Oⓘ Quartz var. Rock CrystalSiO2
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ FluoriteCaF2
Fⓘ TopazAl2(SiO4)(F,OH)2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ CordieriteMg2Al4Si5O18
AlAluminium
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ CordieriteMg2Al4Si5O18
Alⓘ OrthoclaseK(AlSi3O8)
Alⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ TopazAl2(SiO4)(F,OH)2
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ Quartz var. CitrineSiO2
Siⓘ CordieriteMg2Al4Si5O18
Siⓘ OrthoclaseK(AlSi3O8)
Siⓘ QuartzSiO2
Siⓘ Quartz var. Rose QuartzSiO2
Siⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ TopazAl2(SiO4)(F,OH)2
Siⓘ Quartz var. Rock CrystalSiO2
Siⓘ Garnet GroupX3Z2(SiO4)3
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ KësteriteCu2ZnSnS4
Sⓘ SphaleriteZnS
Sⓘ StanniteCu2FeSnS4
Sⓘ StannoiditeCu6+Cu22+(Fe2+,Zn)3Sn2S12
Sⓘ StibniteSb2S3
Sⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ OrthoclaseK(AlSi3O8)
Kⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ FluoriteCaF2
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ ArsenopyriteFeAsS
Feⓘ ChalcopyriteCuFeS2
Feⓘ LöllingiteFeAs2
Feⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Feⓘ StanniteCu2FeSnS4
Feⓘ StannoiditeCu6+Cu22+(Fe2+,Zn)3Sn2S12
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ KësteriteCu2ZnSnS4
Cuⓘ MalachiteCu2(CO3)(OH)2
Cuⓘ StanniteCu2FeSnS4
Cuⓘ StannoiditeCu6+Cu22+(Fe2+,Zn)3Sn2S12
ZnZinc
Znⓘ KësteriteCu2ZnSnS4
Znⓘ SphaleriteZnS
Znⓘ StannoiditeCu6+Cu22+(Fe2+,Zn)3Sn2S12
AsArsenic
Asⓘ ArsenopyriteFeAsS
Asⓘ LöllingiteFeAs2
SnTin
Snⓘ CassiteriteSnO2
Snⓘ KësteriteCu2ZnSnS4
Snⓘ StanniteCu2FeSnS4
Snⓘ StannoiditeCu6+Cu22+(Fe2+,Zn)3Sn2S12
SbAntimony
Sbⓘ StibniteSb2S3
PbLead
Pbⓘ GalenaPbS
UUranium
Uⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O

Geochronology

Mineralization age: Permian : 284 ± 4 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Permian
   Cisuralian
ⓘ Greisen284 ± 4 Ma

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/St_Michael%27s_Mount
Wikidata ID:Q1431121
GeoNames ID:7294222


This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

http://projects.exeter.ac.uk/geomincentre/02MOUNTS%20BAY.pdf
Forbes, M.D. (1822) On the Geology of St. Michael's Mount. Transactions of the Royal Geological Society of Cornwall, 2, 366-375.
Moore, F., Howie, R. A. (1984) Tin-bearing sulphides from St Michael's Mount and Cligga Head, Cornwall. Mineralogical Magazine, 48 (348) 389-396 doi:10.1180/minmag.1984.048.348.09
Quick NavTopMineral ListRock TypesGeochronologyFossilsOther DatabasesReferences
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 22, 2026 03:15:34 Page updated: February 12, 2026 11:36:55
Go to top of page