1 Physical Properties
1.1 Tenacity
1.2 Solubility
Partly soluble in HCl.
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Brittle
1.6 Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
{001} perfect; {111} imperfect, may exhibit parting on , {011}
1.7 Mohs Hardness
1.8 Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)