Chemical Formula:
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Ca2Al4Si4O16·9(H2O) |
Composition:
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Molecular Weight = 718.55 g |
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Hydrogen |
2.52 % |
H |
22.56 % |
H2O |
0.00 % |
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Oxygen |
55.67 % |
O |
0.00 % |
|
0.00 % |
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Aluminum |
15.02 % |
Al |
28.38 % |
Al2O3 |
0.00 % |
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Silicon |
15.63 % |
Si |
33.45 % |
SiO2 |
0.00 % |
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Calcium |
11.16 % |
Ca |
15.61 % |
CaO |
0.00 % |
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|
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100.00 % |
|
100.00 % |
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Empirical Formula:
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Ca2Al4Si4O16·9(H2O) |
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Environment:
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Alteration product of plagioclase |
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Locality:
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Albani Mountains, south of Rome, Italy.. Link to
MinDat.org
Location Data.
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Name Origin:
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Named after the Italian mineralogist, C. G. Gismondi (1762-1824) |
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Synonym:
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Abrazite |
| Aricite |
| Gismondite |
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