Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.19-3.562.08-2.16
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Irregular/uneven
Cleavage
{110} Perfect, {010} Indistinct
distinct/good on {1011}
Mohs Hardness
5.5-64.5
2
10
👆🏻
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
CaAl 2Si 4O 12 -6H 2OArthur Thomas , Gemstones (2009)