General Information:
Chemical Formula:
Ca(Fe++,Mg)6(PO4)2(SiO4)2
Composition:
(Molecular Weight = 701.96 gm)
Calcium 5.71 % Ca
Magnesium 5.19 % Mg
Iron 35.80 % Fe
Silicon 8.00 % Si
Phosphorus 8.82 % P
Oxygen 36.47 % O
Empirical Formula:
CaFe2+4.5Mg1.5(PO4)2(SiO4)2
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[???] Indistinct
Color:
yellow brown or orange brown.
Density:
4.02
Diaphaniety:
Transparent to Translucent
Hardness:
4-5 - Fluorite-Apatite
Luster:
Vitreous (Glassy)
Streak:
light yellow
More details...