Tenacity
Brittle
Brittle
Solubility
slightly water soluble and in hot hydrochloric acid
-
Durability
-
-
Specific Gravity
3.00-3.252.95-3.07
1
7.18
👆🏻
Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann
Conchoidal
Cleavage
Octahedral, perfect on {111}, parting on {011}
Perfect on {110} at 56° and 124°; partings on {010} and {100}
Mohs Hardness
45-6
2
10
👆🏻
Chemical Composition
CaF2
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.