1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.50-3.603.05-3.21
1
7.18
1.9 Fracture
Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
1.10 Cleavage
Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}
Good on {110}, poor on {100}
1.11 Mohs Hardness
1.18 Chemical Composition
(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references