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
3.00-3.253.34-3.44
1
7.18
1.5 Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Octahedral, perfect on {111}, parting on {011}
{111} Indistinct, {111} Indistinct, {111} Indistinct
1.7 Mohs Hardness
1.8 Chemical Composition
CaF2
(K,Cs)Al 4Be 4(B,Be) 12O 28Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references