Undisclosed Amphibole in quartz occurrence, Haute Matsiatra, Madagascari
| Regional Level Types | |
|---|---|
| Undisclosed Amphibole in quartz occurrence | Occurrence |
| Haute Matsiatra | Region |
| Madagascar | Country |
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Latitude & Longitude:
21° South , 46° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~113km
Locality type:
An undisclosed locality (perhaps in the Itremo area ?). In 1990, a find of large quartz crystals to 25 cm in length (with an average size of 4-6 cm) with inclusions of dark green acicular amphiboles were reported from an undisclosed locality "near Fianarantsoa" (Robinson 1994).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 Reference: Robison, G.W. (1994): Quartz with calcic amphibole inclusions from Fianorantsoa (Sic!), Madagascar. 20th Rochester Mineralogical Symposium. Rocks & Minerals. 69 (2), 119 + 133 |
| β 'Amphibole Supergroup' Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 Description: Electron microprobe analysis gave compositions ranging from actinolite to actinolitic hornblende, with Si 7.74-7.31 apfu and Mg/Mg+Fe2+0.51-0.57
(Robinson 1994) Reference: Robison, G.W. (1994): Quartz with calcic amphibole inclusions from Fianorantsoa (Sic!), Madagascar. 20th Rochester Mineralogical Symposium. Rocks & Minerals. 69 (2), 119 + 133 |
| β 'Apatite' Formula: Ca5(PO4)3(Cl/F/OH) Reference: Robison, G.W. (1994): Quartz with calcic amphibole inclusions from Fianorantsoa (Sic!), Madagascar. 20th Rochester Mineralogical Symposium. Rocks & Minerals. 69 (2), 119 + 133 |
| β Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) Reference: Robison, G.W. (1994): Quartz with calcic amphibole inclusions from Fianorantsoa (Sic!), Madagascar. 20th Rochester Mineralogical Symposium. Rocks & Minerals. 69 (2), 119 + 133 |
| β Quartz Formula: SiO2 Reference: Robison, G.W. (1994): Quartz with calcic amphibole inclusions from Fianorantsoa (Sic!), Madagascar. 20th Rochester Mineralogical Symposium. Rocks & Minerals. 69 (2), 119 + 133 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| β | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| β | Actinolite | 9.DE.10 | β»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| β | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Unclassified Minerals, Rocks, etc. | |||
| β | 'Amphibole Supergroup' | - | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| β | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| H | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| H | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| O | Oxygen | |
| O | β Quartz | SiO2 |
| O | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| O | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| O | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| F | Fluorine | |
| F | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| F | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Mg | Magnesium | |
| Mg | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Al | Aluminium | |
| Al | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| Si | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Si | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| P | Phosphorus | |
| P | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| Cl | Chlorine | |
| Cl | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| Cl | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Ca | Calcium | |
| Ca | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| Ca | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Ti | Titanium | |
| Ti | β Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Fe | Iron | |
| Fe | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Robison, G.W. (1994), Quartz with calcic amphibole inclusions from Fianorantsoa (Sic!), Madagascar. 20th Rochester Mineralogical Symposium. Rocks & Minerals: 69(2): 119, 133.
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