Irregular/uneven, UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Uneven
ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)
CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.
(Cu) 3(OH) 2(CO 3) 2 + Cu 2(CO 3)(OH) 2Gemdat.org , Management Team (2012)