1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.77-2.886.30-6.39
1
7.18
1.5 Fracture
Uneven
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
Perfect basal
[001] good, [210] distinct
1.7 Mohs Hardness
1.8 Chemical Composition
K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references