1 Physical Properties
1.1 Tenacity
1.2 Solubility
Soluble
Gelatinises in acids
1.5 Durability
Not Available
Not Available
1.7 Specific Gravity
1.16 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Uneven, Conchoidal, Brittle
1.17 Cleavage
111 (perfect in four directions)
Distinct on {110}
1.18 Mohs Hardness
1.19 Chemical Composition
C
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2