Chemical Formula: (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6
Help on Composition: Composition: Molecular Weight = 236.35 g
 
Oxygen 40.62 % O 0.00 % 0.00 %
Sodium 0.97 % Na 1.31 % Na2O 0.00 %
Magnesium 9.26 % Mg 15.35 % MgO 0.00 %
Aluminum 4.57 % Al 8.63 % Al2O3 0.00 %
Silicon 22.58 % Si 48.30 % SiO2 0.00 %
Calcium 15.26 % Ca 21.35 % CaO 0.00 %
Titanium 2.03 % Ti 3.38 % TiO2 0.00 %
Iron 4.73 % Fe 6.08 % FeO 0.00 %


100.02 % 104.40 %
 
Help on Empirical Formula: Empirical Formula: Ca0.9Na0.1Mg0.9Fe2+0.2Al0.4Ti0.1Si1.9O6
Help on Environment: Environment: Basic igneous and metamorphic rocks
Help on Locality: Locality: Common world wide.. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek auge - "luster."
Help on Synonym: Synonym: Fassaite