1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Brittle, Metallic, Brittle, Metallic
Uneven, UnevenArthur Thomas, Gemstones (2009)
1.6 Cleavage
Perfect on {001}
Perfect on (001)
1.7 Mohs Hardness
1.11 Chemical Composition
Ca(Mg,Al)3(Al3Si)O10(OH)2
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.