1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
5.90-6.102.33-2.37
1
7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
Uneven, Brittle, Uneven, Brittle, Uneven
1.6 Cleavage
{110} Distinct, {001} Indistinct, {100} Indistinct
Perfect on {001}, imperfect on {110}
1.7 Mohs Hardness
1.8 Chemical Composition
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(K,Na)Ca4Si8O20(F,OH)•8(H2O)