1 Physical Properties
1.1 Tenacity
1.3 Solubility
Not Available
Not Available
1.5 Durability
Not Available
Not Available
1.8 Specific Gravity
3.90-4.002.77-2.88
1
7.18
1.11 Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven
1.12 Cleavage
Perfect on {001}, good on {210}, poor on {010}
Perfect basal
1.13 Mohs Hardness
1.14 Chemical Composition
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)