1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Partly soluble in HCl.
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.53-3.653.32-3.43
1
7.18
1.5 Fracture
Splintery, Brittle, Metallic
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
[100] perfect [010] imperfect with 79° angle between
{100} perfect; {110} and {1 1 0} good; {010} poor
1.7 Mohs Hardness
1.8 Chemical Composition
Not Available
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references