Tenacity
-
Brittle
Solubility
-
slightly water soluble and in hot hydrochloric acid
Durability
-
-
Specific Gravity
2.60-2.643.00-3.25
1
7.18
👆🏻
Fracture
Uneven, Splintery, Conchoidal
Subconchoidal, Uneven, ConchoidalWalter Schumann
Cleavage
Absent
Octahedral, perfect on {111}, parting on {011}
Mohs Hardness
6.5-74
2
10
👆🏻
Chemical Composition
SiO 2Arthur Thomas , Gemstones (2009)
CaF2