(D) The chemical formula for Galena is $PbS$ (sulfide ore).The chemical formula for Bauxite is $AlO_x(OH)_{3-2x}$ (oxide ore).The chemical formula for

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(D) The chemical formula for Galena is $PbS$ (sulfide ore).The chemical formula for Bauxite is $AlO_x(OH)_{3-2x}$ (oxide ore).The chemical formula for Cinnabar is $HgS$ (sulfide ore).The chemical formula for Cryolite is $Na_3AlF_6$ (halide ore).Therefore,$Na_3AlF_6$ is a halide ore.