raw pyromorphite mineral rock stone on white background. a minor ore of lead.

mineral naturally occurring substance distinctive chemical physical properties composition atomic structure rocks generally minerals mixed geological processes satin spar gypsum isolated white background green fluorite rock stone museum quartz crystalline silicon dioxide hardness mohs scale raw hematite magnetite magnetic iron sample specimen metamorphic ore page prev1 kaolinite clay important industrial ball kaolinitic sedimentary clays pyromorphite background minor lead