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Andakato thorianite deposit (Ambindandrakemba 2), Ambindandrakemba, Tranomaro, Amboasary Sud District, Anosy, Madagascari
| Regional Level Types | |
|---|---|
| Andakato thorianite deposit (Ambindandrakemba 2) | Mine |
| Ambindandrakemba | Village |
| Tranomaro | Commune |
| Amboasary Sud District | District |
| Anosy | Region |
| Madagascar | Country |
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Latitude & Longitude (WGS84):
24° 34' 19'' South , 46° 30' 47'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Other Languages:
Malagasy:
Andakato, Ambindandrakemba, Kaominin'i Tranomaro, Distrikan' Amboasary Atsimo, Faritr' Anosy, Madagasikara
A thorianite mine situated 800 m east of Ambindandrakemba about 5 km nord-east of the village Tranomaro in the southeastern part of Madagascar. Bodies of thoriante bearing pyroxenites (clinopyroxene-scapolite-titanite pyroxenites) are traversed by plagioclasitic veins (7-8 cm) which contains crystals of spinel, hibonite, corundum and allanite. This was one of the first localities were hibonite first was found in solid rock (Delbos 1955). It had earlier been found in an eluvial deposit nearby (in 1953).
The locality has also been named as "Ambindandrakemba 2" (Behier 1960).
Coordinates are not confirmed.
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
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ 'Allanite Group' Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| ⓘ Anorthite Formula: Ca(Al2Si2O8) |
| ⓘ 'Clinopyroxene Subgroup' |
| ⓘ Corundum Formula: Al2O3 Habit: irregular, anhedral Colour: white, blue |
| ⓘ Hibonite Formula: CaAl12O19 |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ 'Scapolite' |
| ⓘ Spinel Formula: MgAl2O4 |
| ⓘ Thorianite Formula: ThO2 Description: Delbos (1955) reported small grains |
| ⓘ Titanite Formula: CaTi(SiO4)O |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Spinel | 4.BB.05 | MgAl2O4 |
| ⓘ | Corundum | 4.CB.05 | Al2O3 |
| ⓘ | Hibonite | 4.CC.45 | CaAl12O19 |
| ⓘ | Thorianite | 4.DL.05 | ThO2 |
| Group 9 - Silicates | |||
| ⓘ | Titanite | 9.AG.15 | CaTi(SiO4)O |
| ⓘ | Anorthite | 9.FA.35 | Ca(Al2Si2O8) |
| Unclassified | |||
| ⓘ | 'Clinopyroxene Subgroup' | - | |
| ⓘ | 'Scapolite' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Allanite Group' | - | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| O | Oxygen | |
| O | ⓘ Anorthite | Ca(Al2Si2O8) |
| O | ⓘ Corundum | Al2O3 |
| O | ⓘ Hibonite | CaAl12O19 |
| O | ⓘ Spinel | MgAl2O4 |
| O | ⓘ Thorianite | ThO2 |
| O | ⓘ Titanite | CaTi(SiO4)O |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Spinel | MgAl2O4 |
| Al | Aluminium | |
| Al | ⓘ Anorthite | Ca(Al2Si2O8) |
| Al | ⓘ Corundum | Al2O3 |
| Al | ⓘ Hibonite | CaAl12O19 |
| Al | ⓘ Spinel | MgAl2O4 |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Anorthite | Ca(Al2Si2O8) |
| Si | ⓘ Titanite | CaTi(SiO4)O |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| Ca | Calcium | |
| Ca | ⓘ Anorthite | Ca(Al2Si2O8) |
| Ca | ⓘ Hibonite | CaAl12O19 |
| Ca | ⓘ Titanite | CaTi(SiO4)O |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ti | Titanium | |
| Ti | ⓘ Titanite | CaTi(SiO4)O |
| Th | Thorium | |
| Th | ⓘ Thorianite | ThO2 |
Other Regions, Features and Areas containing this locality
AfricaContinent
African Plate
- Bekily BlockShield
Madagascar
- Anosy
- Amboasary Sud District
- Tranomaro-Maromby areaMineral Occurrence Area
- Amboasary Sud District
- ⭔Tuléar Province (Toliara)Province
Somali PlateTectonic Plate
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References
Rakotondrazafy, Michel A. F., Moine, B., Cuney, M. (1996) Mode of formation of hibonite (CaAl 12 O 19 ) within the U-Th skarns from the granulites of S-E Madagascar. Contributions to Mineralogy and Petrology, 123 (2) 190-201 doi:10.1007/s004100050150Sample of hibonite from Andakato is used in the study
Andakato thorianite deposit, Ambindandrakemba, Tranomaro, Amboasary Sud District, Anosy, Madagascar