Tenacity
-
-
Solubility
-
insoluble
Durability
-
-
Specific Gravity
3.63-3.96.46-6.57
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
Indistinct
Good [110] and [021]
Mohs Hardness
7.5-83-3.5
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references