1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Brittle, Metallic, Brittle, Metallic
Uneven, Brittle, Metallic
1.6 Cleavage
{110} Perfect, {010} Perfect
Indistinct on {011}
1.7 Mohs Hardness
1.8 Chemical Composition
Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
CuFeS 2Anthony et al , Handbook of mineralogy (2001)