General Information:
Chemical Formula:Ca(Zn,Cu++)(Fe+++,Zn)[(As+++++O3(OH)2](OH)3
IMA Status:Approved IMA
Physical Properties:
Cleavage:[???] Good
Color:brownish yellow or yellow brown.
Density:4.25
Diaphaniety:Transparent to Translucent
Hardness:3 - Calcite
Luster:Adamantine - Greasy
Streak:light yellow
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