Chemical Formula: Na2CaAl4Si6O20·7(H2O)
Help on Composition: Composition: Molecular Weight = 808.59 g
 
Hydrogen 1.75 % H 15.60 % H2O 0.00 %
Oxygen 53.42 % O 0.00 % 0.00 %
Sodium 5.69 % Na 7.67 % Na2O 0.00 %
Aluminum 13.35 % Al 25.22 % Al2O3 0.00 %
Silicon 20.84 % Si 44.58 % SiO2 0.00 %
Calcium 4.96 % Ca 6.94 % CaO 0.00 %


100.01 % 100.01 %
 
Help on Empirical Formula: Empirical Formula: Na2CaAl4Si6O20·7(H2O)
Help on Environment: Environment: Secondary mineral in basalts
Help on Locality: Locality: Gignat, Puy-de-Dome, France.. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Ferdinand Gonnard, French mineralogist, Lyons, France
Help on Synonym: Synonym: