General Information:
Chemical Formula:
BiFe+++2(SiO4)2(OH)
Composition:
(Molecular Weight = 521.85 gm)
Iron 21.40 % Fe
Silicon 10.76 % Si
Bismuth 40.05 % Bi
Hydrogen 0.19 % H
Oxygen 27.59 % O
Empirical Formula:
BiFe3+2(SiO4)2(OH)
Environment:
Isostructural with Sb analog, chapmanite.
Locality:
Schneeserg, Saxony, Germay.
Name Origin:
Named in allusion to the composition.
Physical Properties:
Color:
green or light yellow.
Density:
4.47
Diaphaniety:
Translucent to opaque
Habits:
Massive - Uniformly indistinguishable crystals forming large masses., ,
Hardness:
6 - Orthoclase
Luster:
Adamantine - Resinous
More details...