1 Physical Properties
1.1 Tenacity
1.2 Solubility
insoluble in water
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.13 Fracture
Fibrous
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.14 Cleavage
Not Available
Perfect on {100}
1.15 Mohs Hardness
1.16 Chemical Composition
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.