1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Partly soluble in HCl.
none
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.32-3.433.64-3.66
1
7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
None, but may exhibit slight parting
1.7 Mohs Hardness
1.8 Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
MgAl2O4