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
Uneven, Conchoidal, UnevenArthur Thomas, Brittle
Brittle, Metallic, Brittle, Metallic
1.6 Cleavage
Perfect on {01 1 1}
{110} Perfect, {010} Perfect
1.7 Mohs Hardness
1.8 Chemical Composition
Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)