UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
Irregular, Irregular, Gemstones of the world (2001)
CoAsSAnthony et al , Handbook of mineralogy (2001)
CaCO 3Ulrich Henn and Claudio C.