1 Physical Properties
1.2 Tenacity
Not Available
Not Available
1.3 Solubility
Not Available
Not Available
1.5 Durability
Not Available
Not Available
1.7 Specific Gravity
2.05-2.085.90-6.10
1
7.18
1.9 Fracture
Not Available
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
1.11 Cleavage
Not Available
{110} Distinct, {001} Indistinct, {100} Indistinct
1.12 Mohs Hardness
1.15 Chemical Composition
SWalter Schumann , Gemstones of the world (2001)
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references