Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.05-3.084.00-4.62
1
7.18
👆🏻
Fracture
Subconchoidal, Uneven, Conchoidal
Conchoidal, Uneven
Cleavage
Poor on {100}
Indistinct parting on [111]
Mohs Hardness
57.5-8
2
10
👆🏻
Chemical Composition
Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)