Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Co3(AsO4)2•8(H2O)