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
2.5 Fracture
Uneven, Conchoidal, Brittle, Metallic, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Conchoidal, Brittle
2.6 Cleavage
2.7 Mohs Hardness
2.11 Chemical Composition
Ca 3Cr 2(SiO 4) 3Ulrich Henn and Claudio C.
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2