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Amstallite Mineral Data
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General Amstallite Information
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 Chemical Formula: |
CaAl(Si,Al)4O8(OH)4•((H2O),Cl) |
| Composition: |
Molecular Weight = 398.85 gm |
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Calcium 10.05 % Ca 14.06 % CaO |
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Aluminum 12.18 % Al 23.01 % Al2O3 |
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Silicon 23.24 % Si 49.71 % SiO2 |
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Hydrogen 1.42 % H 12.65 % H2O |
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Chlorine 1.78 % Cl 1.78 % Cl |
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- %
Cl -0.40 % -O=Cl2 |
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Oxygen 51.35 % O |
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______ ______ |
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100.00 % 100.80 % = TOTAL OXIDE |
| Empirical Formula: |
CaAl1.8Si3.3O8(OH)4(H2O)0.8Cl0.2 |
| Environment: |
In open fissures cutting pegmatitic schlieren, in hydrothermally altered graphite-bearing metamorphic rocks. |
| IMA Status: |
Approved IMA 1987 |
| Locality: |
In the Amstall graphite quarry, Amstall, Austria. Link to MinDat.org Location Data. |
| Name Origin: |
For the locality. |
| Name Pronunciation: |
Amstallite + Pronunciation  |
| Synonym: |
ICSD 68350 |
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PDF 41-1420 |
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