1 Physical Properties
1.1 Tenacity
1.2 Solubility
Dilute acid
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.93-2.962.35-2.36
1
7.18
1.5 Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Not Available
1.6 Cleavage
Distinct on {010}, imperfect {110} and {011}
{???} Indistinct
1.7 Mohs Hardness
1.8 Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 3B 6O 6(OH) 12 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)