Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
(Fe,Mg) 3Al 2(SiO 4) 3gemdat.org , Management Team (2012)