Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.65-2.903.13-3.75
1
7.18
👆🏻
Fracture
-
Subconchoidal, Uneven, Conchoidal
Cleavage
{001} Perfect
Poor on {100}
Mohs Hardness
-99996
2
10
👆🏻
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Mg,Fe2+ ) 9(SiO 4) 4(F,OH)) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references