Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.633.05-3.08
1
7.18
👆🏻
Fracture
Uneven
Subconchoidal, Uneven, Conchoidal
Cleavage
{001} Perfect, {010} Good
Poor on {100}
Mohs Hardness
6-6.55
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)