General Information:
Chemical Formula:Fe+++2As+++4(O,OH)9
Composition:(Molecular Weight = 556.38 gm)Iron 20.08 %
FeArsenic 53.86 %
AsHydrogen 0.18 %
H Oxygen 25.88 %
O Empirical Formula: Fe3+2As4O8(OH)
Environment:In vugs in loellingite.
IMA Status:Approved IMA 1973
Locality:Karibib lithium pegmatite, Namibia.
Name Origin:Named for the locality.
Physical Properties: Color:brownish yellow.
Density:4.07
Habits:Fibrous - Crystals made up of fibers., ,
Hardness:1-2 - Between Talc and Gypsum
Luminescence:Fluorescent, Short UV=yellow.
Streak:light yellow
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