Tenacity
Brittle
-
Solubility
slightly water soluble and in hot hydrochloric acid
-
Durability
-
-
Specific Gravity
3.00-3.252.55
1
7.18
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Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann
-
Cleavage
Octahedral, perfect on {111}, parting on {011}
{001} Perfect
Mohs Hardness
4-9999
2
10
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Chemical Composition
CaF2
Mg 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)