Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.9-6.33.04-3.26
1
7.18
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Fracture
Conchoidal, Uneven
Splintery, Uneven
Cleavage
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
{110} perfect
Mohs Hardness
4.5-55-6
2
10
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Chemical Composition
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)