Tenacity
Brittle
Brittle
Solubility
slightly water soluble and in hot hydrochloric acid
-
Durability
-
-
Specific Gravity
3.00-3.256.50-7.00
1
7.18
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Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann
Irregular, Conchoidal
Cleavage
Octahedral, perfect on {111}, parting on {011}
On {011}, distinct; on {001}, {013}, indistinct
Mohs Hardness
43
2
10
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Chemical Composition
CaF2
PbMoO 4Walter Schumann , Gemstones of the world (2001)