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Ampandrandava phlogopite mine, Beraketa Commune, Bekily District, Androy, Madagascari
Regional Level Types
Ampandrandava phlogopite mineMine (Inactive)
Beraketa CommuneCommune
Bekily DistrictDistrict
AndroyRegion
MadagascarCountry

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Latitude & Longitude (WGS84):
24° 4' 46'' South , 45° 41' 22'' East
Latitude & Longitude (decimal):
Type:
Mine (Inactive) - last checked 2023
Köppen climate type:
Mindat Locality ID:
27843
Long-form identifier:
mindat:1:2:27843:7
GUID (UUID V4):
0
Other Languages:
Malagasy:
Ampandrandava, Kaominin'i Beraketa, Distrikan'i Bekily, Faritr' Androy, Madagasikara


An important locality mined for phlogopite, located about 30 km south of Isoanala and 12 km from Beraketa.

It is the oldest underground mine in Madagascar, and was the most important phlogopite mine in Madagascar.

It was started in 1938 by the company Union des Micas, founded by André Seyrig (1897-1945, see seyrigite).

Today, the mine is closed (2016). It is owned by the company Société Minière d'Ampandrandava (SOMIDA). An underground mine is still to be seen, which was reported partially accessible in 2013.

Typical are pegmatitic crustal silico carbonatites pockets in diopsidites (Morteani et al. 2013). At Ampandrandava these are characterized by coarse-grained lilac anhydrite, orange calcite, large books of phlogopite, large diopside crystals.

Note: Labradorite samples from Madagascar have been erroneously assigned to this locality (http://www.mindat.org/mesg-7-35944.html).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


17 valid minerals.

Detailed Mineral List:

ⓘ 'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
ⓘ Anhydrite
Formula: CaSO4
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Calcite
Formula: CaCO3
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Fluorapatite
Formula: Ca5(PO4)3F
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ Laumontite
Formula: CaAl2Si4O12 · 4H2O
ⓘ Meionite
Formula: Ca4Al6Si6O24CO3
ⓘ Molybdenite
Formula: MoS2
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Description: Leaves measuring 2 meter in diameter has been found here. Lacroix (1941) describes a crystal measuring 3,50 meter along the c-axe and 1,20 m in diameter
ⓘ Prehnite
Formula: Ca2Al2Si3O10(OH)2
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
Description: Specimen in the Geologisches und Mineralogisches Museum. Institut für Geowissenschaften der CAU Kiel, inventory nr. 5369. See http://www.museen-sh.de/ml/digi_einzBild.php?pi=145_5369
ⓘ 'Scapolite'
ⓘ 'Scapolite var. Wernerite'
ⓘ Scheelite
Formula: Ca(WO4)
ⓘ Scheelite var. Molybdoscheelite
Formula: Ca(WO4)
ⓘ Sepiolite
Formula: Mg4(Si6O15)(OH)2 · 6H2O
ⓘ Spinel
Formula: MgAl2O4
ⓘ 'Stilbite Subgroup'
Formula: M6-7[Al8-9Si27-28O72] · nH2O
ⓘ Thorianite
Formula: ThO2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘSpinel4.BB.05MgAl2O4
ⓘThorianite4.DL.05ThO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘAnhydrite7.AD.30CaSO4
ⓘGypsum7.CD.40CaSO4 · 2H2O
ⓘScheelite7.GA.05Ca(WO4)
ⓘvar. Molybdoscheelite7.GA.05Ca(WO4)
Group 8 - Phosphates, Arsenates and Vanadates
ⓘFluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
ⓘDiopside9.DA.15CaMgSi2O6
ⓘPrehnite9.DP.20Ca2Al2Si3O10(OH)2
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘSepiolite9.EE.25Mg4(Si6O15)(OH)2 · 6H2O
ⓘMeionite9.FB.15Ca4Al6Si6O24CO3
ⓘLaumontite9.GB.10CaAl2Si4O12 · 4H2O
Unclassified
ⓘ'Stilbite Subgroup'-M6-7[Al8-9Si27-28O72] · nH2O
ⓘ'Scapolite
var. Wernerite'
-
ⓘ''-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Allanite Group'-(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

List of minerals for each chemical element

HHydrogen
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ LaumontiteCaAl2Si4O12 · 4H2O
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ PrehniteCa2Al2Si3O10(OH)2
Hⓘ SepioliteMg4(Si6O15)(OH)2 · 6H2O
Hⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Hⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
CCarbon
Cⓘ CalciteCaCO3
Cⓘ MeioniteCa4Al6Si6O24CO3
Cⓘ Scapolite var. Wernerite
OOxygen
Oⓘ AnhydriteCaSO4
Oⓘ CalciteCaCO3
Oⓘ DiopsideCaMgSi2O6
Oⓘ FluorapatiteCa5(PO4)3F
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ LaumontiteCaAl2Si4O12 · 4H2O
Oⓘ MeioniteCa4Al6Si6O24CO3
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ PrehniteCa2Al2Si3O10(OH)2
Oⓘ ScheeliteCa(WO4)
Oⓘ SepioliteMg4(Si6O15)(OH)2 · 6H2O
Oⓘ SpinelMgAl2O4
Oⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Oⓘ ThorianiteThO2
Oⓘ Scapolite var. Wernerite
Oⓘ Scheelite var. MolybdoscheeliteCa(WO4)
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Oⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
FFluorine
Fⓘ FluorapatiteCa5(PO4)3F
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ Scapolite var. Wernerite
MgMagnesium
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ SepioliteMg4(Si6O15)(OH)2 · 6H2O
Mgⓘ SpinelMgAl2O4
AlAluminium
Alⓘ LaumontiteCaAl2Si4O12 · 4H2O
Alⓘ MeioniteCa4Al6Si6O24CO3
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ PrehniteCa2Al2Si3O10(OH)2
Alⓘ SpinelMgAl2O4
Alⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Alⓘ Scapolite var. Wernerite
SiSilicon
Siⓘ DiopsideCaMgSi2O6
Siⓘ LaumontiteCaAl2Si4O12 · 4H2O
Siⓘ MeioniteCa4Al6Si6O24CO3
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ PrehniteCa2Al2Si3O10(OH)2
Siⓘ SepioliteMg4(Si6O15)(OH)2 · 6H2O
Siⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Siⓘ Scapolite var. Wernerite
Siⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
PPhosphorus
Pⓘ FluorapatiteCa5(PO4)3F
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ AnhydriteCaSO4
Sⓘ ChalcopyriteCuFeS2
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
ClChlorine
Clⓘ Scapolite var. Wernerite
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ AnhydriteCaSO4
Caⓘ CalciteCaCO3
Caⓘ DiopsideCaMgSi2O6
Caⓘ FluorapatiteCa5(PO4)3F
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ LaumontiteCaAl2Si4O12 · 4H2O
Caⓘ MeioniteCa4Al6Si6O24CO3
Caⓘ PrehniteCa2Al2Si3O10(OH)2
Caⓘ ScheeliteCa(WO4)
Caⓘ Scapolite var. Wernerite
Caⓘ Scheelite var. MolybdoscheeliteCa(WO4)
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
CuCopper
Cuⓘ ChalcopyriteCuFeS2
MoMolybdenum
Moⓘ MolybdeniteMoS2
WTungsten
Wⓘ ScheeliteCa(WO4)
Wⓘ Scheelite var. MolybdoscheeliteCa(WO4)
ThThorium
Thⓘ ThorianiteThO2

Geochronology

Mineralization age: Cambrian : 533 ± 24 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
  Cambrian
   Terreneuvian
ⓘ Phlogopite533 ± 24 Ma

Other Regions, Features and Areas containing this locality

AfricaContinent
African Plate
Madagascar
Somali PlateTectonic Plate

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

 
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