Anthoinite

General Information:
 Chemical Formula:
AlWO3(OH)3
 Composition:
(Molecular Weight = 309.85 gm)
Aluminum 8.71 % Al
Hydrogen 0.98 % H 
Tungsten 59.33 % W 
Oxygen 30.98 % O 
 Empirical Formula:
AlWO3(OH)3
 Environment:
In placers and probable alteration product of scheelite.
 Locality:
Mt. Misobo tungsten mine, Kalima district, Maniema, Zaire.
 Name Origin:
Named for Raymond Anthoine (1888-1971), Belgian mining engineer, who wrote on prospecting of alluvial deposits.
Physical Properties:
 Cleavage:
[???] Perfect
 Color:
white.
 Density:
4.8
 Habits:
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., ,
 Hardness:
1 - Talc
 Luster:
Earthy (Dull)
 Streak:
white
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