1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.5 Fracture
Uneven, Conchoidal, Conchoidal to uneven, Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
2.6 Cleavage
On {10 1 1} perfect; parting on {10 1 2}
Not Available
2.7 Mohs Hardness
2.11 Chemical Composition
MnCO3
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)