General Information:
Chemical Formula:
Fe++2Fe+++BO5
Composition:
(Molecular Weight = 258.35 gm)
Iron 64.85 % Fe
Boron 4.18 % B
Oxygen 30.96 % O
Empirical Formula:
Fe2+2Fe3+BO5
Locality:
Old City Quarry, Riverside, Riverside Co. California.
Physical Properties:
Cleavage:
None
Color:
greenish black or black.
Density:
4.77
Diaphaniety:
Opaque
Hardness:
5 - Apatite
Luster:
Adamantine - Metallic
Streak:
black
More details...