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
1.5 Fracture
Not Available
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
1.6 Cleavage
Not Available
Octahedral, perfect on {111}, parting on {011}
1.7 Mohs Hardness
1.8 Chemical Composition
NaFe 3+ 3 Al 6 (BO 3 ) 3 Si 6 O 18 (O,F,OH) 4 Anthony et al, Handbook of mineralogy (2001)
CaF2