1 Physical Properties
1.1 Tenacity
1.2 Solubility
Dilute acid
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.93-2.963.20-3.32
1
7.18
1.5 Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal
1.6 Cleavage
Distinct on {010}, imperfect {110} and {011}
Poor
1.7 Mohs Hardness
1.8 Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)