Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.05-3.083.05-3.21
1
7.18
👆🏻
Fracture
Subconchoidal, Uneven, Conchoidal
-
Cleavage
Poor on {100}
None
Mohs Hardness
57-7.5
2
10
👆🏻
Chemical Composition
Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
(Al,Mn3+ ) 2SiO 4OGemdat.org , Management Team (2012)