General Information:
Chemical Formula:
(Mn,Fe++)Fe+++2(PO4)2(OH)2·4(H2O)
IMA Status:
Approved IMA 1983
Physical Properties:
Cleavage:
[???] Good, [???] Good
Color:
yellow or reddish brown.
Density:
2.9
Diaphaniety:
Transparent to Translucent
Hardness:
3-4 - Calcite-Fluorite
Luster:
Vitreous (Glassy)
More details...