2 Physical Properties
2.2 Tenacity
2.4 Solubility
Not Available
slightly water soluble and in hot hydrochloric acid
2.6 Durability
Not Available
Not Available
2.7 Specific Gravity
3.05-3.373.00-3.25
1
7.18
2.8 Fracture
Conchoidal, Brittle, Conchoidal
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
2.9 Cleavage
Good on (110)
Octahedral, perfect on {111}, parting on {011}
2.10 Mohs Hardness
2.16 Chemical Composition
NaCa2Mg5Si7AlO22(OH)2
CaF2