ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)