1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.58-2.646.46-6.57
1
7.18
1.7 Fracture
Not Available
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
1.8 Cleavage
Not Available
Good [110] and [021]
1.9 Mohs Hardness
1.13 Chemical Composition
SiO 2Walter Schumann , Gemstones of the world (2001)
PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references