Tenacity
Brittle
-
Solubility
slightly water soluble and in hot hydrochloric acid
insoluble in water
Durability
-
-
Specific Gravity
3.00-3.252.51-2.63
1
7.18
👆🏻
Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann
Fibrous
Cleavage
Octahedral, perfect on {111}, parting on {011}
Perfect basal
Mohs Hardness
42.5-4.5
2
10
👆🏻
Chemical Composition
CaF2
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)