Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)
FeO(OH)Arthur Thomas , Gemstones (2009)
(Cu) 3(OH) 2(CO 3) 2 + Cu 2(CO 3)(OH) 2Gemdat.org , Management Team (2012)