1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.25-3.352.33-2.37
1
7.18
1.5 Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Uneven, Brittle, Uneven, Brittle, Uneven
1.6 Cleavage
Perfect in three directions
Perfect on {001}, imperfect on {110}
1.7 Mohs Hardness
1.8 Chemical Composition
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(K,Na)Ca4Si8O20(F,OH)•8(H2O)