Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.05-3.213.28-3.38
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Splintery
Splintery, Fibrous
Cleavage
Good on {110}, poor on {100}
Good on [110]
Mohs Hardness
7.56.5-7
2
10
👆🏻
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
NaAlSi 2O 6Ulrich Henn and Claudio C.