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, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Conchoidal, Brittle
1.6 Cleavage
{110} Perfect, {010} Indistinct
{001} perfect; {111} imperfect, may exhibit parting on , {011}
1.7 Mohs Hardness
1.8 Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)