Tenacity
Brittle
Brittle
Solubility
Soluble
slightly water soluble and in hot hydrochloric acid
Durability
-
-
Specific Gravity
4.1-4.33.00-3.25
1
7.18
👆🏻
Fracture
Uneven
Subconchoidal, Uneven, ConchoidalWalter Schumann
Cleavage
Indistinct on {011}
Octahedral, perfect on {111}, parting on {011}
Mohs Hardness
3.5-44
2
10
👆🏻
Chemical Composition
CuFeS 2Anthony et al , Handbook of mineralogy (2001)
CaF2