Tenacity
-
Slightly sectile
Solubility
-
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Durability
-
-
Specific Gravity
2.77-2.882
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
Perfect basal
Prismatic {10 1 0}, perfect
Mohs Hardness
2.52-2.5
2
10
👆🏻
Chemical Composition
K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references