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, Brittle, Metallic
Uneven, Brittle, Uneven, Brittle, Uneven
1.6 Cleavage
{110} Perfect, {010} Perfect
Perfect on {001}, imperfect on {110}
1.7 Mohs Hardness
1.8 Chemical Composition
Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
(K,Na)Ca4Si8O20(F,OH)•8(H2O)