General Information:
Chemical Formula:ZnFe+++3(AsO4)2(OH)2
Composition:(Molecular Weight = 488.94 gm)Zinc 13.37 %
ZnIron 22.84 %
FeArsenic 30.65 %
AsHydrogen 0.41 %
H Oxygen 32.72 %
O Empirical Formula: ZnFe3+2(AsO4)2(OH)2
Environment:Underground workings (level 44) of the Tsumeb mine in the third oxidation zone,
IMA Status:Approved IMA 1999 (Dana # Added)
Locality:TL: Tsumeb mine, Namibia.
Name Origin:Named after Wilhelm Klein, former mine manager in Anamibia, who made the first systematic collection of minerals from the Tsumeb mine.
Physical Properties: Cleavage:[232] Imperfect
Color:blackish green.
Density:4.34 - 4.63, Average = 4.48
Diaphaniety:Translucent
Habits:Euhedral Crystals - Occurs as well-formed crystals showing good external form., ,
Hardness:4.5 - Between Fluorite and Apatite
Luminescence:Non-fluorescent.
Luster:Adamantine
Streak:green
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