Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.77-2.883.19-3.56
1
7.18
👆🏻
Fracture
Uneven
Uneven, Conchoidal
Cleavage
Perfect basal
{110} Perfect, {010} Indistinct
Mohs Hardness
2.55.5-6
2
10
👆🏻
Chemical Composition
K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)