1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.4 Solubility
Not Available
Not Available
1.7 Durability
Not Available
Not Available
1.10 Specific Gravity
5.90-6.103.62-3.80
1
7.18
1.16 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.17 Cleavage
{110} Distinct, {001} Indistinct, {100} Indistinct
Not Available
1.18 Mohs Hardness
1.19 Chemical Composition
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 3(Al,Cr) 2(SiO 4) 3Gemdat.org , Management Team (2012)