1 Physical Properties
1.2 Tenacity
Not Available
Not Available
1.3 Solubility
Not Available
Not Available
1.4 Durability
Not Available
Not Available
1.5 Specific Gravity
1.9 Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven
1.10 Cleavage
[001] good, [210] distinct
Imperfect to indistinct on {10 1 0}, parting on {0001}
1.11 Mohs Hardness
1.12 Chemical Composition
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references