UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Uneven
Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
{010} Perfect, {001} Distinct
Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.