1 Physical Properties
1.2 Tenacity
Not Available
Not Available
1.5 Solubility
Not Available
Not Available
1.8 Durability
Not Available
Not Available
1.9 Specific Gravity
5.90-6.102.74-2.90
1
7.18
1.15 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
Not Available
1.16 Cleavage
{110} Distinct, {001} Indistinct, {100} Indistinct
Not Available
1.17 Mohs Hardness
1.18 Chemical Composition
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.