1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
slightly water soluble and in hot hydrochloric acid
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.45-3.553.00-3.25
1
7.18
1.5 Fracture
Uneven
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
1.6 Cleavage
{100} Perfect, {010} Perfect
Octahedral, perfect on {111}, parting on {011}
1.7 Mohs Hardness
1.8 Chemical Composition
(Fe,Mg) 2Si 2O 6Ulrich Henn and Claudio C.
CaF2