General Information:
Chemical Formula:
CaWO4
Composition:
(Molecular Weight = 287.93 gm)
Calcium 13.92 % Ca
Tungsten 63.85 % W
Oxygen 22.23 % O
Empirical Formula:
Ca(WO4)
Name Origin:
Named after the Swedish chemist, K. W. Scheele (1742-1786).
Physical Properties:
Cleavage:
[010] Distinct
Color:
colorless, white, pale yellow, brownish yellow, or reddish yellow.
Density:
5.9 - 6.12, Average = 6.01
Diaphaniety:
Transparent to translucent
Habits:
Massive - Granular - Common texture observed in granite and other igneous rock., Disseminated - Occurs in small, distinct particles dispersed in matrix., Columnar - Forms columns
Hardness:
4-5 - Fluorite-Apatite
Luminescence:
Fluorescent, Short UV=bright bluish white.
Luster:
Vitreous (Glassy)
Streak:
white
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