Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.05-3.084.392
1
7.18
👆🏻
Fracture
Subconchoidal, Uneven, Conchoidal
Conchoidal
Cleavage
Poor on {100}
{010} moderate, {100} imperfect
Mohs Hardness
56.5-7
2
10
👆🏻
Chemical Composition
Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)