1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Uneven
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
None
[001] good, [210] distinct
1.7 Mohs Hardness
1.8 Chemical Composition
(Fe+++,Al)25(PO4)17O6(OH)12•75(H2O)
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references