Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
Perfect on [10 1 1] three directions with angle of 74° 55
{100} Good, {010} Good, {001} Good
CaCO 3Ulrich Henn and Claudio C.
CoAsSAnthony et al , Handbook of mineralogy (2001)