Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.19-3.563.53-3.65
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Splintery
Cleavage
{110} Perfect, {010} Indistinct
[100] perfect [010] imperfect with 79° angle between
Mohs Hardness
5.5-64-7
2
10
👆🏻
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Al2SiO5