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
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001)
Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal
1.6 Cleavage
{100} Perfect, {001} Perfect
Perfect on {001}, very good on {010}, imperfect on {110}
1.7 Mohs Hardness
1.8 Chemical Composition
Na(Mn2+ ,Ca) 2Si 3O 8(OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)