Anandite

General Information:
 Chemical Formula:
(Ba,K)(Fe++,Mg)3(Si,Al,Fe)4O10(O,OH)2
 Environment:
Found in iron ores.
 Locality:
Wilagedera prospect, North Western Province, Sri Lanka.
 Name Origin:
Named for Ananda Kentish Coomaraswamy (1877-1947), first director of the Mineral Survey of Ceylon (Sri Lanka).
Physical Properties:
 Cleavage:
[001] Perfect
 Color:
black.
 Density:
3.94
 Diaphaniety:
Subtranslucent to opaque
 Habits:
Massive - Uniformly indistinguishable crystals forming large masses., ,
 Hardness:
3-4 - Calcite-Fluorite
 Luminescence:
Non-fluorescent.
 Luster:
Vitreous (Glassy)
 Streak:
gray white
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