Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Al 6B 5O 15(F,OH) 3Ulrich Henn and Claudio C.
Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.