Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3-3.153.19-3.56
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
Good on [110] and on [001]
{110} Perfect, {010} Indistinct
Mohs Hardness
6.0-6.55.5-6
2
10
👆🏻
Chemical Composition
[ ]Na2(Mg3Al2)Si8O22(OH)2
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)