Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.782.60-2.64
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven, Splintery, Conchoidal
Cleavage
{???} Distinct, {???} Indistinct
Absent
Mohs Hardness
5-66.5-7
2
10
👆🏻
Chemical Composition
3CaAl 2Si 2O 8 · CaCO 3Anthony et al , Handbook of mineralogy (2001)
SiO 2Arthur Thomas , Gemstones (2009)