Tenacity
Brittle
-
Solubility
slightly water soluble and in hot hydrochloric acid
-
Durability
-
-
Specific Gravity
3.00-3.252.30-2.50
1
7.18
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Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann
Uneven
Cleavage
Octahedral, perfect on {111}, parting on {011}
Perfect on (001)
Mohs Hardness
44.5-5
2
10
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Chemical Composition
CaF2
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.