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Scheelite
White Opal
White Opal and Scheelite Physical Properties


Physical Properties
Tenacity
Brittle  
-  
Solubility
-  
-  
Durability
-  
-  
Specific Gravity
5.9-6.3  
1.98-2.50  
Fracture
Conchoidal, Uneven  
Conchoidal  
Cleavage
On {101}, distinct; on {112}, interrupted; on {001}, indistinct  
None  
Mohs Hardness
4.5-5  
5.5-6.5  
Chemical Composition
CaWO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references  
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)  
Optical Properties >>
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