General Information:
Chemical Formula:
YW2O6(OH)3
Composition:
(Molecular Weight = 603.62 gm)
Yttrium 14.73 % Y
Hydrogen 0.50 % H
Tungsten 60.92 % W
Oxygen 23.86 % O
Empirical Formula:
YW2O6(OH)3
IMA Status:
Approved IMA 1987
Locality:
Kramat Pulai mine, Kinta District, Perak, Malaysia.
Name Origin:
Named for the composition (Yttrium, Tungsten).
Physical Properties:
Cleavage:
[???] Good
Color:
canary yellow or light yellow.
Density:
5.96
Habits:
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., Encrustations - Forms crust-like aggregates on matrix., Lath - Shaped like a small, thin plas ter lath, tabular (rectangular) in shape
Hardness:
1 - Talc
Luster:
Earthy (Dull)
Streak:
yellow white
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