1 Physical Properties
1.2 Tenacity
2.1 Solubility
Not Available
Not Available
2.4 Durability
Not Available
Not Available
2.5 Specific Gravity
6.30-6.392.98-3.03
1
7.18
2.7 Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven
2.8 Cleavage
[001] good, [210] distinct
[110] perfect; [010] distinct
2.9 Mohs Hardness
2.15 Chemical Composition
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.