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Benato phlogopite mines, Benato Toby, Betroka District, Anosy, Madagascari
Regional Level Types
Benato phlogopite minesGroup of Mines (Abandoned)
Benato TobyCommune
Betroka DistrictDistrict
AnosyRegion
MadagascarCountry

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PhotosMapsSearch
06906610017272024541691.jpg
View of the Betroka phlogopite mining area, ca. 1925.

Benato phlogopite mines, Benato Toby, Betroka District, Anosy, Madagascar
01099670017272245563644.jpg
Chabazite, etc.

Benato phlogopite mines, Benato Toby, Betroka District, Anosy, Madagascar
04750070017272022813704.jpg
Titanite, etc.

Benato phlogopite mines, Benato Toby, Betroka District, Anosy, Madagascar
06906610017272024541691.jpg
View of the Betroka phlogopite mining area, ca. 1925.

Benato phlogopite mines, Benato Toby, Betroka District, Anosy, Madagascar
01099670017272245563644.jpg
Chabazite, etc.

Benato phlogopite mines, Benato Toby, Betroka District, Anosy, Madagascar
04750070017272022813704.jpg
Titanite, etc.

Benato phlogopite mines, Benato Toby, Betroka District, Anosy, Madagascar
06906610017272024541691.jpg
View of the Betroka phlogopite mining area, ca. 1925.

Benato phlogopite mines, Benato Toby, Betroka District, Anosy, Madagascar
08226110017272245563943.jpg
Chabazite, etc.

Benato phlogopite mines, Benato Toby, Betroka District, Anosy, Madagascar
Latitude & Longitude (WGS84):
23° 5' 18'' South , 45° 51' 33'' East
Latitude & Longitude (decimal):
-23.08844,45.85921
GeoHash:
G#: m5bsescsj
GRN:
S16E30
Type:
Group of Mines (Abandoned)
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Ambalasoa4,000 (2018)14.7km
Mindat Locality ID:
108772
Long-form identifier:
mindat:1:2:108772:0
GUID (UUID V4):
0
Other Languages:
Malagasy:
Karieran'i Benato, Kaominin'i Benato Toby, Distrikan'i Betroka, Faritr' Anosy, Madagasikara


The locality Benato is refering to a several phlogopite workings and mines around Benato Toby, N of the small stream of Itafia, about 30 km NW of the town Betroka in the southern part of Madagascar. Discovered by M.A. Louys. Exploitation started here in 1924. Large pockets with large phlogopite crystals has been found in the JS.9 mine, the largest measured 4 m in length and 2 m in diameter and weighed 27,5 tons ! The JS.9 mine was mined from 1948 to 1953.

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List

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

16 valid minerals.

Rock Types Recorded

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

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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ 'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
ⓘ Analcime
Formula: Na(AlSi2O6) · H2O
ⓘ Anhydrite
Formula: CaSO4
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Calcite
Formula: CaCO3
ⓘ 'Chabazite'
Habit: crystals < 8mm
ⓘ Diopside
Formula: CaMgSi2O6
Description: Large well-devoloped crystals up to 80 cm long has been reported (Behier 1960). Especially in the J.S.7 prospect
ⓘ Fluorite
Formula: CaF2
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ 'Heulandite Subgroup'
Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
ⓘ Laumontite
Formula: CaAl2Si4O12 · 4H2O
ⓘ 'Mica Group'
ⓘ Molybdenite
Formula: MoS2
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ Prehnite
Formula: Ca2Al2Si3O10(OH)2
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
Habit: Large masses; small grains & incomplete hexagonal crystals
ⓘ 'Scapolite'
ⓘ Spinel
Formula: MgAl2O4
ⓘ 'Stilbite Subgroup'
Formula: M6-7[Al8-9Si27-28O72] · nH2O
ⓘ Titanite
Formula: CaTi(SiO4)O
ⓘ Zircon
Formula: Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘSpinel4.BB.05MgAl2O4
ⓘOpal4.DA.10SiO2 · nH2O
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘAnhydrite7.AD.30CaSO4
ⓘGypsum7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
ⓘZircon9.AD.30Zr(SiO4)
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘDiopside9.DA.15CaMgSi2O6
ⓘPrehnite9.DP.20Ca2Al2Si3O10(OH)2
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘAnalcime9.GB.05Na(AlSi2O6) · H2O
ⓘLaumontite9.GB.10CaAl2Si4O12 · 4H2O
Unclassified
ⓘ'Chabazite'-
ⓘ'Heulandite Subgroup'-(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
ⓘ'Stilbite Subgroup'-M6-7[Al8-9Si27-28O72] · nH2O
ⓘ'Mica Group'-
ⓘ'Scapolite'-
ⓘ'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ⓘ AnalcimeNa(AlSi2O6) · H2O
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Hⓘ LaumontiteCaAl2Si4O12 · 4H2O
Hⓘ OpalSiO2 · nH2O
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ PrehniteCa2Al2Si3O10(OH)2
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
OOxygen
Oⓘ AnalcimeNa(AlSi2O6) · H2O
Oⓘ AnhydriteCaSO4
Oⓘ CalciteCaCO3
Oⓘ DiopsideCaMgSi2O6
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Oⓘ LaumontiteCaAl2Si4O12 · 4H2O
Oⓘ OpalSiO2 · nH2O
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ PrehniteCa2Al2Si3O10(OH)2
Oⓘ SpinelMgAl2O4
Oⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ ZirconZr(SiO4)
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Oⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
FFluorine
Fⓘ FluoriteCaF2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AnalcimeNa(AlSi2O6) · H2O
Naⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
MgMagnesium
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ SpinelMgAl2O4
AlAluminium
Alⓘ AnalcimeNa(AlSi2O6) · H2O
Alⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Alⓘ LaumontiteCaAl2Si4O12 · 4H2O
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ PrehniteCa2Al2Si3O10(OH)2
Alⓘ SpinelMgAl2O4
Alⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
SiSilicon
Siⓘ AnalcimeNa(AlSi2O6) · H2O
Siⓘ DiopsideCaMgSi2O6
Siⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Siⓘ LaumontiteCaAl2Si4O12 · 4H2O
Siⓘ OpalSiO2 · nH2O
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ PrehniteCa2Al2Si3O10(OH)2
Siⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ ZirconZr(SiO4)
Siⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ AnhydriteCaSO4
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ AnhydriteCaSO4
Caⓘ CalciteCaCO3
Caⓘ DiopsideCaMgSi2O6
Caⓘ FluoriteCaF2
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Caⓘ LaumontiteCaAl2Si4O12 · 4H2O
Caⓘ PrehniteCa2Al2Si3O10(OH)2
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiⓘ TitaniteCaTi(SiO4)O
FeIron
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
ZrZirconium
Zrⓘ ZirconZr(SiO4)
MoMolybdenum
Moⓘ MolybdeniteMoS2

Localities in this Region

Madagascar

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

Savorin, André (1937) Les gisements de mica phlogopite du service des mines. Annales géologiques du Service des mines, 7. 9-23
Behier, Jean (1963) Carte minéralogique de Madagascar. Archive Service Géologique de Madagascar A.1871
Besaire, Henri (1966) Gîtes minéraux de Madagascar. Annales géologiques de Madagascar Vol. 34. République Malgachepp.309-310
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