Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.19-3.562.74-2.90
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven, Splintery
Cleavage
{110} Perfect, {010} Indistinct
Perfect on {100} and {001}
Mohs Hardness
5.5-64.5-5
2
10
👆🏻
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.