Xanthiosite Ni3(AsO4)2
Xanthoconite Rittingerite
Ag3AsS3
Xanthoxenite Ca4Fe+++2(PO4)4(OH)2·3(H2O)
Xenotime-(Y) YPO4
Xenotime-(Yb) IMA1998-049
YbPO4
Xiangjiangite (Fe+++,Al)(UO2)4(PO4)2(SO4)2(OH)·22(H2O)
Xifengite Fe5Si3
Xilingolite Pb3Bi2S6
Ximengite BiPO4
Xingzhongite (Pb,Cu,Fe)(Ir,Pt,Rh)2S4
Xitieshanite Fe+++(SO4)(OH)·7(H2O)
Xocomecatlite Cu3Te++++++O4(OH)4
Xonotlite Eakleite
Ca6Si6O17(OH)2