Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}
Good on {110}, poor on {100}
(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references