1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
6.50-7.003.43-3.44
1
7.18
1.5 Fracture
Irregular, Brittle, Conchoidal
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
1.6 Cleavage
On {011}, distinct; on {001}, {013}, indistinct
None Observed
1.7 Mohs Hardness
1.8 Chemical Composition
PbMoO 4Walter Schumann , Gemstones of the world (2001)
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references