Samuelsonite

General Information:
 Chemical Formula:
(Ca,Ba)Ca8(Fe++,Mn)4Al2(PO4)10(OH)2
 IMA Status:
Approved IMA 1975
Physical Properties:
 Cleavage:
[001] Good
 Color:
colorless.
 Density:
3.353
 Diaphaniety:
Transparent
 Hardness:
5 - Apatite
 Luster:
Subadamantine
 Streak:
white
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