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Mt. Vohidraty (Vohidratsy), Antaly Commune, Ampanihy District, Atsimo-Andrefana Region, Tuléar Province (Toliara), Madagascar

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Latitude & Longitude (WGS84): 24° 23' 59'' South , 44° 46' 0'' East
Latitude & Longitude (decimal): -24.40000,44.76667
GeoHash:G#: kgxv4wn5d
Locality type:Mountain
Köppen climate type:Aw : Tropical savanna, wet
Name(s) in local language(s):Vohidraty (Vohidratsy), Kaominin' Antaly, Distrikan' Ampanihy, Faritra Atsimo Andrefana, Faritanin'i Toliary, Madagasikara


Vohidraty is a mountain (359 m) about 30 km N of the town Ampanihy in the southern part of Madagascar, south of the village of Beteny. The turquoise occurrence was exploited by J. de Saint Ours in 1959.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


3 valid minerals.

Detailed Mineral List:

Pyrite
Formula: FeS2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Turquoise
Formula: Cu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Reference: Behier, J. (1959): Travaux mineralogiques. In Besaire, H. (ed): Rapport Annuel du Service Geologique pour 1959. Republique Madagascar, Tananarive: 237-250; Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Wavellite
Formula: Al3(PO4)2(OH,F)3 · 5H2O
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Pyrite'2.EB.05aFeS2
Group 8 - Phosphates, Arsenates and Vanadates
'Turquoise'8.DD.15Cu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
'Wavellite'8.DC.50Al3(PO4)2(OH,F)3 · 5H2O

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)7(XO4)4Zq·xH2O
Turquoise42.9.3.1Cu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
A3(XO4)2Zq·xH2O
Wavellite42.10.2.1Al3(PO4)2(OH,F)3 · 5H2O

List of minerals for each chemical element

HHydrogen
H TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
H WavelliteAl3(PO4)2(OH,F)3 · 5H2O
OOxygen
O TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
O WavelliteAl3(PO4)2(OH,F)3 · 5H2O
AlAluminium
Al TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Al WavelliteAl3(PO4)2(OH,F)3 · 5H2O
PPhosphorus
P TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
P WavelliteAl3(PO4)2(OH,F)3 · 5H2O
SSulfur
S PyriteFeS2
FeIron
Fe PyriteFeS2
Fe TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
CuCopper
Cu TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Neoproterozoic - Stenian
541 - 1200 Ma



ID: 3184681
Mesoproterozoic-Neoproterozoic sedimentary rocks

Age: Proterozoic (541 - 1200 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Cryogenian
635 - 720 Ma



ID: 3310493

Age: Cryogenian (635 - 720 Ma)

Lithology: Volcanic-sedimentary

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Behier, J. (1959) Travaux minéralogiques. In Besaire, H. (ed) Rapport Annuel du Service Geologique pour 1959. Republique Madagascar, Tananarive: 237-250.
Behier, J. (1963) Carte minéralogique de Madagascar. Archive Service Géologique Madagascar. A 1871.


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