1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Brittle, Metallic
Uneven, Brittle, Uneven, Brittle, Uneven
1.6 Cleavage
Imperfect in one direction
Perfect on {001}, imperfect on {110}
1.7 Mohs Hardness
1.8 Chemical Composition
CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
(K,Na)Ca4Si8O20(F,OH)•8(H2O)