1 Physical Properties
1.1 Tenacity
1.2 Solubility
slightly water soluble and in hot hydrochloric acid
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
Octahedral, perfect on {111}, parting on {011}
Perfect [001] good [010] poor [110]
1.7 Mohs Hardness
1.8 Chemical Composition
CaF2
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)