Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Irregular/uneven, UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Uneven
{100} Perfect, {110} Good, {011} Distinct
Perfect on {110} and {1 1 0}
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.