Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
Poorly soluble in dilute HCl
Perfect on {10 1 1}, rhombohedral cleavage
CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
{100} Perfect, {110} Good, {011} Distinct
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references