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Ianakafy, Betroka District, Anosy, Madagascari
| Regional Level Types | |
|---|---|
| Ianakafy | Commune |
| Betroka District | District |
| Anosy | Region |
| Madagascar | Country |
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Malagasy:
Kaominin' Ianakafy, Distrikan'i Betroka, Faritr' Anosy, Madagasikara
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Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities6 valid minerals.
Rock Types Recorded
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Rock list contains entries from the region specified including sub-localities
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Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ 'Chevkinite Group' |
| ⓘ Cordierite Formula: (Mg,Fe)2Al3(AlSi5O18) Habit: oval-shaped monomineralic aggregates Colour: slightly bluish Description: a very Mg-rich variety with ca. 7 mol. % of the iron component |
| ⓘ Kornerupine Formula: Mg3Al6(Si,Al,B)5O21(OH) Habit: prismatic crystals up to 3-4cm long and 1cm thick. The prisms show the faces {100}, {010} and {110}. End faces are extremely rare and poorly developed. Only {111} could be identified. |
| ⓘ 'Orthopyroxene Subgroup' Habit: euhedral to subhedral crystals characterized by the pyramidal faces {211}. Faces {101} not visible. Colour: brownish Description: The mineral represents a bronzite with (Fe, Mn): Mg = 15:85 and with Al largely substituting for Si. |
| ⓘ Phlogopite Formula: KMg3(AlSi3O10)(OH)2 Habit: mostly anhedral flakes up to 1cm, sometimes showing prismatic faces and, very rarely, showing poorly developed pyramidal faces. Colour: black |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ Sapphirine Formula: Mg4(Mg3Al9)O4[Si3Al9O36] Colour: slightly greenish blue |
| ⓘ Spinel Formula: MgAl2O4 Colour: blue Description: pure MgAl-spinel |
| ⓘ 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z Colour: black |
| ⓘ Zircon Formula: Zr(SiO4) Habit: euhedral crystals |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Spinel | 4.BB.05 | MgAl2O4 |
| Group 9 - Silicates | |||
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | Kornerupine | 9.BJ.50 | Mg3Al6(Si,Al,B)5O21(OH) |
| ⓘ | 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 | |||
| ⓘ | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
| ⓘ | 'Chevkinite Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| H | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| B | Boron | |
| B | ⓘ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| B | ⓘ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| O | Oxygen | |
| O | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| O | ⓘ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| O | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| O | ⓘ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| O | ⓘ Spinel | MgAl2O4 |
| O | ⓘ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Mg | ⓘ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| Mg | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Mg | ⓘ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| Mg | ⓘ Spinel | MgAl2O4 |
| Al | Aluminium | |
| Al | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Al | ⓘ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| Al | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Al | ⓘ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| Al | ⓘ Spinel | MgAl2O4 |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Si | ⓘ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| Si | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Si | ⓘ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| Si | ⓘ Zircon | Zr(SiO4) |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| K | Potassium | |
| K | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Fe | Iron | |
| Fe | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
Fossils
This region is too big or complex to display the fossil list, try looking at smaller subregions.Other Databases
| GeoNames ID: | 11926450 |
|---|
Localities in this Region
- Anosy
- Betroka District
Other Regions, Features and Areas that Intersect
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