Tenacity
-
Brittle
Solubility
-
slightly water soluble and in hot hydrochloric acid
Durability
-
-
Specific Gravity
3.1-3.53.00-3.25
1
7.18
👆🏻
Fracture
Granular
Subconchoidal, Uneven, ConchoidalWalter Schumann
Cleavage
None
Octahedral, perfect on {111}, parting on {011}
Mohs Hardness
5-64
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)
CaF2