ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)
Splintery, UnevenArthur Thomas, Difficult, Fibrous
(Cu) 3(OH) 2(CO 3) 2 + Cu 2(CO 3)(OH) 2Gemdat.org , Management Team (2012)
NaAlSi 2O 6Ulrich Henn and Claudio C.