1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.15-3.215.90-6.10
1
7.18
1.5 Fracture
Uneven, Subconchoidal, Gemstones (2009)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
1.6 Cleavage
Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°
{110} Distinct, {001} Indistinct, {100} Indistinct
1.7 Mohs Hardness
1.8 Chemical Composition
LiAlSi2O6
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references