1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
6.30-6.393.21-3.38
1
7.18
1.5 Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Irregular/uneven, Uneven
1.6 Cleavage
[001] good, [210] distinct
Perfect on {001}
1.7 Mohs Hardness
1.8 Chemical Composition
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references