Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.44-2.623.19-3.56
1
7.18
👆🏻
Fracture
Uneven
Uneven, Conchoidal
Cleavage
Indiscernible
{110} Perfect, {010} Indistinct
Mohs Hardness
2.5-5.55.5-6
2
10
👆🏻
Chemical Composition
H 4Mg 3Si 2O 9Walter Schumann , Gemstones of the world (2001) More from other references
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)