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Ambindandrakemba Mine, Ambindandrakemba, Tranomaro, Amboasary Sud District, Anosy, Madagascari
| Regional Level Types | |
|---|---|
| Ambindandrakemba Mine | Mine |
| Ambindandrakemba | Village |
| Tranomaro | Commune |
| Amboasary Sud District | District |
| Anosy | Region |
| Madagascar | Country |
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Latitude & Longitude (WGS84):
24° 33' 48'' South , 46° 30' 28'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Other/historical names associated with this locality:
Ambindandrakemba 1
Other Languages:
Malagasy:
Karieran' Ambindandrakemba, Ambindandrakemba, Kaominin'i Tranomaro, Distrikan' Amboasary Atsimo, Faritr' Anosy, Madagasikara
A uranium mine - one of the most important thorianite mines [Gisement de Thoranite] in the Tranomaro area in the southeastern part of Madagascar. It is situated about 5 km north-east of the town Tranomaro. From 1958 to 1963 it was worked as a open pit with a depth of about 50 meter. Also refered to as Ambindandrakemba 1.
The deposit is large and nearly vertical, occurring in lenticular pyroxene rock mass. The outcrop is nearly 500 m long and 30–70 m wide, dipping 75° west. The deposit consists of several vertical uranothorianite veinlets disseminated by rich ore bodies. The uranium content in uranothorianite is 22%, and the uranothorianite content in the rich ore bodies is 0.4%, indicating that the average grade of uranium ore is 0.088%.
The deposit is large and nearly vertical, occurring in lenticular pyroxene rock mass. The outcrop is nearly 500 m long and 30–70 m wide, dipping 75° west. The deposit consists of several vertical uranothorianite veinlets disseminated by rich ore bodies. The uranium content in uranothorianite is 22%, and the uranothorianite content in the rich ore bodies is 0.4%, indicating that the average grade of uranium ore is 0.088%.
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
10 valid minerals.
Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ 'Apatite' Formula: Ca5(PO4)3A |
| ⓘ Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| ⓘ Augite var. Fassaite Formula: (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| ⓘ Corundum Formula: Al2O3 |
| ⓘ Diopside Formula: CaMgSi2O6 |
| ⓘ Hibonite Formula: CaAl12O19 Description: First found of a sample of plagioclasite with hibonite from around Ambindandrakemba was made by Hoareau (?), prospecteur for CEA in 1954. |
| ⓘ Pargasite Formula: NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| ⓘ Phlogopite Formula: KMg3(AlSi3O10)(OH)2 |
| ⓘ 'Scapolite' |
| ⓘ 'Scapolite var. Wernerite' |
| ⓘ Spinel Formula: MgAl2O4 |
| ⓘ Thorianite Formula: ThO2 |
| ⓘ Thorianite var. Uranothorianite Formula: (Th,U)O2 |
| ⓘ Thorite Formula: Th(SiO4) |
| ⓘ Thorite var. Thorogummite Formula: (Th,U)(SiO4)1-x(OH)4x |
| ⓘ Titanite Formula: CaTiO(SiO4) |
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 |
| ⓘ | var. Uranothorianite | 4.DL.05 | (Th,U)O2 |
| Group 9 - Silicates | |||
| ⓘ | Thorite | 9.AD.30 | Th(SiO4) |
| ⓘ | var. Thorogummite | 9.AD.30 | (Th,U)(SiO4)1-x(OH)4x |
| ⓘ | Titanite | 9.AG.15 | CaTiO(SiO4) |
| ⓘ | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Augite var. Fassaite | 9.DA.15 | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| ⓘ | Pargasite | 9.DE.15 | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| ⓘ | Phlogopite | 9.EC.20 | KMg3(AlSi3O10)(OH)2 |
| Unclassified | |||
| ⓘ | 'Scapolite var. Wernerite' | - | |
| ⓘ | '' | - | |
| ⓘ | 'Apatite' | - | Ca5(PO4)3A |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| H | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| H | ⓘ Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| C | Carbon | |
| C | ⓘ Scapolite var. Wernerite | |
| O | Oxygen | |
| O | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | ⓘ Corundum | Al2O3 |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Hibonite | CaAl12O19 |
| O | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| O | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| O | ⓘ Spinel | MgAl2O4 |
| O | ⓘ Thorianite | ThO2 |
| O | ⓘ Thorite | Th(SiO4) |
| O | ⓘ Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| O | ⓘ Titanite | CaTiO(SiO4) |
| O | ⓘ Thorianite var. Uranothorianite | (Th,U)O2 |
| O | ⓘ Scapolite var. Wernerite | |
| O | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| O | ⓘ Apatite | Ca5(PO4)3A |
| Na | Sodium | |
| Na | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Na | ⓘ Scapolite var. Wernerite | |
| Na | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Mg | Magnesium | |
| Mg | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Mg | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Mg | ⓘ Spinel | MgAl2O4 |
| Mg | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Al | Aluminium | |
| Al | ⓘ Corundum | Al2O3 |
| Al | ⓘ Hibonite | CaAl12O19 |
| Al | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Al | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Al | ⓘ Spinel | MgAl2O4 |
| Al | ⓘ Scapolite var. Wernerite | |
| Al | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Si | Silicon | |
| Si | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Si | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Si | ⓘ Thorite | Th(SiO4) |
| Si | ⓘ Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| Si | ⓘ Titanite | CaTiO(SiO4) |
| Si | ⓘ Scapolite var. Wernerite | |
| Si | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| P | Phosphorus | |
| P | ⓘ Apatite | Ca5(PO4)3A |
| Cl | Chlorine | |
| Cl | ⓘ Scapolite var. Wernerite | |
| K | Potassium | |
| K | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Ca | ⓘ Hibonite | CaAl12O19 |
| Ca | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Ca | ⓘ Titanite | CaTiO(SiO4) |
| Ca | ⓘ Scapolite var. Wernerite | |
| Ca | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Ca | ⓘ Apatite | Ca5(PO4)3A |
| Ti | Titanium | |
| Ti | ⓘ Titanite | CaTiO(SiO4) |
| Ti | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Fe | Iron | |
| Fe | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Fe | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Th | Thorium | |
| Th | ⓘ Thorianite | ThO2 |
| Th | ⓘ Thorite | Th(SiO4) |
| Th | ⓘ Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| Th | ⓘ Thorianite var. Uranothorianite | (Th,U)O2 |
| U | Uranium | |
| U | ⓘ Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| U | ⓘ Thorianite var. Uranothorianite | (Th,U)O2 |
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
Majmundar, H. H. (1971) Fassaite from Madagascar. The Canadian Mineralogist, 10 (5) 899-903(with analysis of fassaite from Ambindandrakemba)
Sahoa, Frank Elliot, Rabesiranana, Naivo, Andriambololona, Raoelina, Finck, Nicolas, Marquardt, Christian, Geckeis, Hörst (2013) Crystallographic Study of Uranium-Thorium Bearing Minerals in Tranomaro, South-East Madagascar. Journal of Minerals and Materials Characterization and Engineering, 1 (6). 347-352 doi:10.4236/jmmce.2013.16053
[1]Wu, Datian, Liu, Jun’an, Razoeliarimalala, Mirana, Wang, Tiangang, Razafimbelo, Rachel, Xu, Fengming, Sun, Wei, Ralison, Bruno, Wang, Zhuo, Zhou, Yongheng, et al. (2025) Evaluation and Classification of Uranium Prospective Areas in Madagascar: A Geochemical Block-Based Approach. Minerals, 15 (3). doi:10.3390/min15030280
Ambindandrakemba Mine, Ambindandrakemba, Tranomaro, Amboasary Sud District, Anosy, Madagascar