Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
Subconchoidal, Uneven, Conchoidal, Uneven
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)