Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.05-3.082.24-2.29
1
7.18
👆🏻
Fracture
Subconchoidal, Uneven, Conchoidal
Uneven, Subconchoidal, Conchoidal
Cleavage
Poor on {100}
Very poor [100]
Mohs Hardness
55-5.5
2
10
👆🏻
Chemical Composition
Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references