Ambatomena ruby deposit, Isoanala, Betroka District, Anosy, Madagascari
| Regional Level Types | |
|---|---|
| Ambatomena ruby deposit | Deposit |
| Isoanala | Commune |
| Betroka District | District |
| Anosy | Region |
| Madagascar | Country |
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Latitude & Longitude (WGS84):
23° South , 45° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~29km
Type:
Age:
487 Ma
Geologic Time:
Reference for age:
Arima, M., Kimoto, K., Rakotondrazafy, R., Rakotoandrasana, N.O.T., & Ranaivoson, M.A. (2013): Igneous sapphirine in Ambatomena, southern Madagascar. Goldschmidt2013 Conference Abstracts. Mineralogical Magazine: 77 (5): 615
Köppen climate type:
Mindat Locality ID:
191485
Long-form identifier:
mindat:1:2:191485:9
GUID (UUID V4):
9e2b3ec5-56a4-4878-8b98-2155582d0e52
Other Languages:
Malagasy:
Ambatomena, Kaominin' Isoanala, Distrikan'i Betroka, Faritr' Anosy, Madagasikara
Ruby-bearing cordieritite layers or lenses, intercalated within biotite-cordierite-sillimanite-bearing charnockite. The deposit was exploited by a private company from 2000 to 2001. The deposit occurs in the Androyan metamorphic series.
Located about 10 km NE of Isoanala.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
6 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 DiagramDetailed Mineral List:
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Spinel | 4.BB.05 | MgAl2O4 |
| ⓘ | Corundum | 4.CB.05 | Al2O3 |
| ⓘ | var. Ruby | 4.CB.05 | Al2O3 |
| ⓘ | Rutile | 4.DB.05 | TiO2 |
| Group 9 - Silicates | |||
| ⓘ | Cordierite | 9.CJ.10 | (Mg,Fe)2Al3(AlSi5O18) |
| ⓘ | Sapphirine | 9.DH.45 | Mg4(Mg3Al9)O4[Si3Al9O36] |
| ⓘ | Phlogopite | 9.EC.20 | KMg3(AlSi3O10)(OH)2 |
| Unclassified | |||
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| O | Oxygen | |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| O | ⓘ Corundum | Al2O3 |
| O | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| O | ⓘ Corundum var. Ruby | Al2O3 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| O | ⓘ Spinel | MgAl2O4 |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Mg | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Mg | ⓘ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| Mg | ⓘ Spinel | MgAl2O4 |
| Al | Aluminium | |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Al | ⓘ Corundum | Al2O3 |
| Al | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Al | ⓘ Corundum var. Ruby | Al2O3 |
| Al | ⓘ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| Al | ⓘ Spinel | MgAl2O4 |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Si | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Si | ⓘ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ti | Titanium | |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ti | ⓘ Rutile | TiO2 |
| Fe | Iron | |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
Geochronology
Mineralization age: Cambrian : 487 ± 4 MaImportant 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 Time | Rocks, Minerals and Events | ||||||
|---|---|---|---|---|---|---|---|
| Phanerozoic | |||||||
| Paleozoic | |||||||
| Cambrian | |||||||
| Furongian |
| ||||||
Other Regions, Features and Areas containing this locality
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References
Giuliani, Gaston, Fallick, Anthony, Rakotondrazafy, Michel, Ohnenstetter, Daniel, Andriamamonjy, Alfred, Ralantoarison, Théogène, Rakotosamizanany, Saholy, Razanatseheno, Marie, Offant, Yohann, Garnier, Virginie, Dunaigre, Christian, Schwarz, Dietmar, Mercier, Alain, Ratrimo, Voahangy, Ralison, Bruno (2007) Oxygen isotope systematics of gem corundum deposits in Madagascar: relevance for their geological origin. Mineralium Deposita, 42 (3) 251-270 doi:10.1007/s00126-006-0105-3
Rakotondrazafy, Amos Fety Michel, Giuliani, Gaston, Ohnenstetter, Daniel, Fallick, Anthony E., Rakotosamizanany, Saholy, Andriamamonjy, Alfred, Ralantoarison, Théogène, Razanatseheno, Madison, Offant, Yohann, Garnier, Virginie, Maluski, Henri, Dunaigre, Christian, Schwarz, Dietmar, Ratrimo, Voahangy (2008) Gem corundum deposits of Madagascar: A review. Ore Geology Reviews, 34 (1) 134-154 doi:10.1016/j.oregeorev.2007.05.001
