Ambatofotsikely pegmatite, Betsohana, Mandoto, Vakinankaratra, Madagascari
| Regional Level Types | |
|---|---|
| Ambatofotsikely pegmatite | Pegmatite |
| Betsohana | Commune |
| Mandoto | District |
| Vakinankaratra | Region |
| Madagascar | Country |
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Latitude & Longitude (WGS84):
19° 26' 5'' South , 46° 27' 3'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Miandrarivo | 27,000 (2018) | 31.3km |
| Soavinandriana | 40,453 (2018) | 42.0km |
| Faratsiho | 37,563 (2018) | 52.4km |
| Betafo | 29,785 (2018) | 60.9km |
Other Languages:
Malagasy:
Ambatofotsikely, Kaominin'i Betsohana, Distrikan'i Mandoto, Vakinankaratra, Madagasikara
A granite LCT pegmatite, Beryl-Columbite subtype. It is situated about 1 km north of the village of Ambatofotsikely (Ambatofotsy Carole), 22 km north-northwest of Ankazomiriotra and 74 km northwest of Antsirabe.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
15 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:
| ⓘ 'Allanite Group' Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| ⓘ 'Almandine-Spessartine Series' |
| ⓘ Anatase Formula: TiO2 Description: Behier (1960) reports find of anatase from the region of Ambatofotsikley |
| ⓘ Beryl Formula: Be3Al2(Si6O18) Colour: blue, yellow |
| ⓘ Beryl var. Aquamarine Formula: Be3Al2Si6O18 |
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ Columbite-(Fe) Formula: Fe2+Nb2O6 Description: A Mn-rich ferrocolumbite References: |
| ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series' Habit: Forms observed: {011},{032},{021},{221},{131},{150},{170},[012},{641},{123},{143},{145},{344} Description: Crystals to 1,5 kg has been observed (Lacroix 1922) References: |
| ⓘ Euxenite-(Y) Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 References: |
| ⓘ 'Fergusonite' |
| ⓘ Gahnite Formula: ZnAl2O4 |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Monazite-(Ce) Formula: Ce(PO4) References: Rosell, Joan (2023) Personal Communication. Identified by Joan Rosell: SEM-EDS |
| ⓘ 'Monazite Group' Formula: REE(PO4) |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Amethyst Formula: SiO2 References: |
| ⓘ Rutile Formula: TiO2 Habit: masses of several kilos, crystals are rare (A.Lacroix) |
| ⓘ Rutile var. Ilmenorutile Formula: (Ti,Nb)O2 Habit: masses of several kilos, crystals are rare (A.Lacroix) |
| ⓘ Samarskite-(Y) Formula: YFe3+Nb2O8 Description: Often found in close association with columbite. Specimens from J.Behiers collection marked "Ampangabeite" has been found to be Samarskite-(Y) |
| ⓘ Spessartine Formula: Mn2+3Al2(SiO4)3 |
| ⓘ Vermiculite Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| ⓘ Xenotime-(Y) Formula: Y(PO4) |
| ⓘ Zircon Formula: Zr(SiO4) References: Farges, François, Calas, Georges (1991) Structural analysis of radiation damage in zircon and thorite: An X-ray absorption spectroscopic study. American Mineralogist, 76 (1-2) 60-73 with analysis of zircon from Ambatofotikety (sic!), Betafo |
| ⓘ Zircon var. Malacon Formula: Zr(SiO4) References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Gahnite | 4.BB.05 | ZnAl2O4 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz var. Amethyst | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| ⓘ | Rutile var. Ilmenorutile | 4.DB.05 | (Ti,Nb)O2 |
| ⓘ | 4.DB.05 | TiO2 | |
| ⓘ | Samarskite-(Y) | 4.DB.25 | YFe3+Nb2O8 |
| ⓘ | Columbite-(Fe) | 4.DB.35 | Fe2+Nb2O6 |
| ⓘ | Anatase | 4.DD.05 | TiO2 |
| ⓘ | Euxenite-(Y) | 4.DG.05 | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Xenotime-(Y) | 8.AD.35 | Y(PO4) |
| ⓘ | Monazite-(Ce) | 8.AD.50 | Ce(PO4) |
| Group 9 - Silicates | |||
| ⓘ | Spessartine | 9.AD.25 | Mn2+3Al2(SiO4)3 |
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | var. Malacon | 9.AD.30 | Zr(SiO4) |
| ⓘ | Beryl var. Aquamarine | 9.CJ.05 | Be3Al2Si6O18 |
| ⓘ | 9.CJ.05 | Be3Al2(Si6O18) | |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Vermiculite | 9.EC.50 | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| Unclassified | |||
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Monazite Group' | - | REE(PO4) |
| ⓘ | 'Almandine-Spessartine Series' | - | |
| ⓘ | 'Columbite-(Fe)-Columbite-(Mn) Series' | - | |
| ⓘ | 'Fergusonite' | - | |
| ⓘ | 'Allanite Group' | - | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
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 | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| H | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| Be | Beryllium | |
| Be | ⓘ Beryl var. Aquamarine | Be3Al2Si6O18 |
| Be | ⓘ Beryl | Be3Al2(Si6O18) |
| O | Oxygen | |
| O | ⓘ Quartz var. Amethyst | SiO2 |
| O | ⓘ Anatase | TiO2 |
| O | ⓘ Beryl var. Aquamarine | Be3Al2Si6O18 |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Beryl | Be3Al2(Si6O18) |
| O | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| O | ⓘ Columbite-(Fe) | Fe2+Nb2O6 |
| O | ⓘ Gahnite | ZnAl2O4 |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Rutile var. Ilmenorutile | (Ti,Nb)O2 |
| O | ⓘ Monazite Group | REE(PO4) |
| O | ⓘ Monazite-(Ce) | Ce(PO4) |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| O | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| O | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| O | ⓘ Xenotime-(Y) | Y(PO4) |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Almandine-Spessartine Series | |
| O | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| O | ⓘ Zircon var. Malacon | Zr(SiO4) |
| O | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | Magnesium | |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| Al | Aluminium | |
| Al | ⓘ Beryl var. Aquamarine | Be3Al2Si6O18 |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Beryl | Be3Al2(Si6O18) |
| Al | ⓘ Gahnite | ZnAl2O4 |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Al | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| Al | ⓘ Almandine-Spessartine Series | |
| Si | Silicon | |
| Si | ⓘ Quartz var. Amethyst | SiO2 |
| Si | ⓘ Beryl var. Aquamarine | Be3Al2Si6O18 |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Beryl | Be3Al2(Si6O18) |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Si | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| Si | ⓘ Zircon | Zr(SiO4) |
| Si | ⓘ Almandine-Spessartine Series | |
| Si | ⓘ Zircon var. Malacon | Zr(SiO4) |
| Si | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| P | Phosphorus | |
| P | ⓘ Monazite Group | REE(PO4) |
| P | ⓘ Monazite-(Ce) | Ce(PO4) |
| P | ⓘ Xenotime-(Y) | Y(PO4) |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Ti | Titanium | |
| Ti | ⓘ Anatase | TiO2 |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ti | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Ti | ⓘ Rutile var. Ilmenorutile | (Ti,Nb)O2 |
| Ti | ⓘ Rutile | TiO2 |
| Mn | Manganese | |
| Mn | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Mn | ⓘ Almandine-Spessartine Series | |
| Mn | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| Fe | Iron | |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Columbite-(Fe) | Fe2+Nb2O6 |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| Fe | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| Fe | ⓘ Almandine-Spessartine Series | |
| Fe | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| Zn | Zinc | |
| Zn | ⓘ Gahnite | ZnAl2O4 |
| Y | Yttrium | |
| Y | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Y | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| Y | ⓘ Xenotime-(Y) | Y(PO4) |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
| Zr | ⓘ Zircon var. Malacon | Zr(SiO4) |
| Nb | Niobium | |
| Nb | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Nb | ⓘ Columbite-(Fe) | Fe2+Nb2O6 |
| Nb | ⓘ Rutile var. Ilmenorutile | (Ti,Nb)O2 |
| Nb | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| Nb | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| Ce | Cerium | |
| Ce | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Ce | ⓘ Monazite-(Ce) | Ce(PO4) |
| Ta | Tantalum | |
| Ta | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Th | Thorium | |
| Th | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| U | Uranium | |
| U | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
Other Regions, Features and Areas containing this locality
AfricaContinent
African Plate
- Antenanarivo BlockOrogenic Belt
Madagascar
- ⭔Antananarivo ProvinceProvince
Somali PlateTectonic Plate
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References
Ungemach, Henri (1916) Contribution à la Minéralogie de Madagascar. Bulletin de Minéralogie, 39 (1) 5-38 doi:10.3406/bulmi.1916.3635on monazite and columbite from Ambatofotsikely
Lacroix, Alfred (1922) Minéralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. Augustin Challamel. 624 pp. pp.278-279
Tarantino, S. C., Zema, M. (2005) Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study. American Mineralogist, 90 (8-9). 1291-1300 doi:10.2138/am.2005.1641 [sample of Columbite-(Fe) from Ambatofotsikely used in this study]
Ambatofotsikely pegmatite, Betsohana, Mandoto, Vakinankaratra, Madagascar