Tenacity
Brittle
Brittle
Solubility
Effervesces in hot HCl
-
Durability
-
-
Specific Gravity
2.92-3.122.72-2.75
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
[10 1 1] perfect
Perfect on [001], good on [010], imperfect on [110]
Mohs Hardness
3.5-4.56-6.5
2
10
👆🏻
Chemical Composition
MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)