Tenacity
-
Brittle
Solubility
-
slightly water soluble and in hot hydrochloric acid
Durability
-
-
Specific Gravity
2.50-2.803.00-3.25
1
7.18
👆🏻
Fracture
-
Subconchoidal, Uneven, ConchoidalWalter Schumann
Cleavage
Perfect
Octahedral, perfect on {111}, parting on {011}
Mohs Hardness
5-6.54
2
10
👆🏻
Chemical Composition
Na 4(Al,Si) 12O 24Cl to Ca 4(Si,Al) 12O 24(CO 3,SO 4)Arthur Thomas , Gemstones (2009)
CaF2