1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.67-2.733.82-4.00
1
7.18
1.8 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Not Available
1.9 Cleavage
Perfect on [10 1 1] three directions with angle of 74° 55
{???} Indistinct
1.10 Mohs Hardness
1.11 Chemical Composition
CaCO 3Ulrich Henn and Claudio C.
Mn2+9(SiO 4) 4(OH,F) 2Anthony et al , Handbook of mineralogy (2001)