General Information:
Chemical Formula:
Ca8(Ti,Fe++,Fe+++,Mn)6-7(As+++O3)12·4(H2O)
IMA Status:
Approved IMA 1966
Physical Properties:
Cleavage:
None
Color:
brownish yellow, brownish black, dark brown, or dark red.
Density:
3.9
Diaphaniety:
Translucent to Opaque
Hardness:
5.5-6 - Knife Blade-Orthoclase
Luster:
Sub Metallic
Streak:
yellowish brown
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