1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Gelatinises in acids
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Uneven, Brittle, Uneven, Brittle, Uneven
Uneven, Conchoidal, Brittle
1.6 Cleavage
Perfect on {001}, imperfect on {110}
Distinct on {110}
1.7 Mohs Hardness
1.8 Chemical Composition
(K,Na)Ca4Si8O20(F,OH)•8(H2O)
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2