Tenacity
Brittle
-
Solubility
slightly water soluble and in hot hydrochloric acid
Insoluble in acids
Durability
-
-
Specific Gravity
3.00-3.254.20-4.30
1
7.18
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Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann
Uneven, Conchoidal
Cleavage
Octahedral, perfect on {111}, parting on {011}
{110} good, 100 moderate, parting on {092} and {011}
Mohs Hardness
46-6.5
2
10
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Chemical Composition
CaF2
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)