Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Metallic
CaCO 3Ulrich Henn and Claudio C.
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)