Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.05-3.083.89-4.18
1
7.18
👆🏻
Fracture
Subconchoidal, Uneven, Conchoidal
Conchoidal, Uneven
Cleavage
Poor on {100}
{0001}, {11 2 0} imperfect
Mohs Hardness
55.5
2
10
👆🏻
Chemical Composition
Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references