1 Physical Properties
1.1 Tenacity
1.2 Solubility
Gelatinises in acids
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Uneven, Conchoidal, Brittle
Conchoidal, Brittle, Conchoidal
1.6 Cleavage
Distinct on {110}
Good on [110] and on [001]
1.7 Mohs Hardness
1.8 Chemical Composition
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
[ ]Na2(Mg3Al2)Si8O22(OH)2