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Ianakafy (Inanakafy), Ianakafy, Betroka District, Anosy, Madagascari
| Regional Level Types | |
|---|---|
| Ianakafy (Inanakafy) | Village |
| Ianakafy | Commune |
| Betroka District | District |
| Anosy | Region |
| Madagascar | Country |
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Latitude & Longitude (WGS84):
23° 21' 14'' South , 45° 26' 51'' East
Latitude & Longitude (decimal):
Type:
Kรถppen climate type:
Other Languages:
Malagasy:
Ianakafy, Kaominin' Ianakafy, Distrikan'i Betroka, Faritr' Anosy, Madagasikara
von Knorring, Sahama & Lehtinen (1969) published data on kornerupine found in 2 samples of a highly metamorphic gneiss said to come from "Inanakafy near Betroka, Madagascar". "Inanakafy" is most probably a misspelling and refers to the small village and commune centre of Ianakafy situated about 90 km along a dirt road West of Betroka.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral 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:
| โ 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 |
| โ 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. |
| โ '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. |
| โ 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 |
| โ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 |
| โ Sapphirine Formula: Mg4(Mg3Al9)O4[Si3Al9O36] Colour: slightly greenish blue |
| โ Spinel Formula: MgAl2O4 Colour: blue Description: pure MgAl-spinel |
| โ 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z Colour: black |
| โ Zircon Formula: Zr(SiO4) Habit: euhedral crystals |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| โ | Spinel | 4.BB.05 | MgAl2O4 |
| Group 9 - Silicates | |||
| โ | Zircon | 9.AD.30 | Zr(SiO4) |
| โ | Kornerupine | 9.BJ.50 | Mg3Al6(Si,Al,B)5O21(OH) |
| โ | Cordierite | 9.CJ.10 | (Mg,Fe)2Al3(AlSi5O18) |
| โ | Sapphirine | 9.DH.45 | Mg4(Mg3Al9)O4[Si3Al9O36] |
| โ | Phlogopite | 9.EC.20 | KMg3(AlSi3O10)(OH)2 |
| Unclassified | |||
| โ | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
| โ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| โ | 'Orthopyroxene Subgroup' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | โ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| H | โ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| B | Boron | |
| B | โ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| B | โ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| O | Oxygen | |
| O | โ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| O | โ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| O | โ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| O | โ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| O | โ Spinel | MgAl2O4 |
| O | โ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| O | โ Zircon | Zr(SiO4) |
| O | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | Sodium | |
| Na | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | โ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Mg | โ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| Mg | โ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Mg | โ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| Mg | โ Spinel | MgAl2O4 |
| Al | Aluminium | |
| Al | โ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Al | โ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| Al | โ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Al | โ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| Al | โ Spinel | MgAl2O4 |
| Al | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | โ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Si | โ Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| Si | โ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Si | โ Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| Si | โ Zircon | Zr(SiO4) |
| Si | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| K | Potassium | |
| K | โ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Fe | Iron | |
| Fe | โ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Zr | Zirconium | |
| Zr | โ Zircon | Zr(SiO4) |
Other Regions, Features and Areas containing this locality
AfricaContinent
African Plate
- Bekily BlockShield
Madagascar
- ⭔Tulรฉar Province (Toliara)Province
Somali PlateTectonic Plate
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