Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.19-3.562.90-3.14
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal, Uneven
Cleavage
{110} Perfect, {010} Indistinct
Imperfect; basal
Mohs Hardness
5.5-67.5-8
2
10
👆🏻
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.