1 Physical Properties
1.1 Tenacity
1.3 Solubility
Not Available
Poorly soluble in dilute HCl
1.6 Durability
Not Available
Not Available
1.9 Specific Gravity
3.396-3.4432.80-2.95
1
7.18
1.13 Fracture
Brittle, Metallic
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.14 Cleavage
[001] good, [100] and [110] fair
Perfect on {10 1 1}, rhombohedral cleavage
1.15 Mohs Hardness
1.17 Chemical Composition
Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references