Tenacity
Brittle
Flexible
Solubility
slightly water soluble and in hot hydrochloric acid
-
Durability
-
-
Specific Gravity
3.00-3.254.6-4.76
1
7.18
👆🏻
Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann
-
Cleavage
Octahedral, perfect on {111}, parting on {011}
Perfect on {0001}
Mohs Hardness
4-9999
2
10
👆🏻
Chemical Composition
CaF2
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references