Tenacity
Brittle
Brittle
Solubility
-
slightly water soluble and in hot hydrochloric acid
Durability
-
-
Specific Gravity
3.20-3.323.00-3.25
1
7.18
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Fracture
Uneven, Conchoidal
Subconchoidal, Uneven, ConchoidalWalter Schumann
Cleavage
Poor
Octahedral, perfect on {111}, parting on {011}
Mohs Hardness
6-6.54
2
10
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Chemical Composition
(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
CaF2