Chemical Formula:
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Na2CaAl4Si6O20·7(H2O) |
Composition:
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Molecular Weight = 808.59 g |
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Hydrogen |
1.75 % |
H |
15.60 % |
H2O |
0.00 % |
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Oxygen |
53.42 % |
O |
0.00 % |
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0.00 % |
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Sodium |
5.69 % |
Na |
7.67 % |
Na2O |
0.00 % |
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Aluminum |
13.35 % |
Al |
25.22 % |
Al2O3 |
0.00 % |
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Silicon |
20.84 % |
Si |
44.58 % |
SiO2 |
0.00 % |
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Calcium |
4.96 % |
Ca |
6.94 % |
CaO |
0.00 % |
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100.01 % |
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100.01 % |
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Empirical Formula:
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Na2CaAl4Si6O20·7(H2O) |
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Environment:
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Secondary mineral in basalts |
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Locality:
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Gignat, Puy-de-Dome, France.. Link to
MinDat.org
Location Data.
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Name Origin:
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Named for Ferdinand Gonnard, French mineralogist, Lyons, France |
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Synonym:
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