ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
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Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.
Ca 5(PO 4) 3ClAnthony et al , Handbook of mineralogy (2001)