John Cancalosi / Bauxite, an amorphous clayey rock that is the chief commercial ore of aluminum. From Weipa, Cape York peninsula, Queensland , Australia

Philippe Clement / Hematite / haematite specimen, mineral form of iron oxide on white background

John Cancalosi / Botryoidal hematite, the main ore mineral of iron. Morocco.

John Cancalosi / Bauxite from Western Australia, Australia, Main ore of aluminium.

John Cancalosi / Chalcopyrite, copper iron sulfide, a copper ore, with calcite. from Zacatecas, Mexico.

Pete Oxford / Aerial view of Bauxite mine, Linden town, Guyana, South America

Pete Oxford / Bauxite mine, blue water caused by industrial runoff, minerals into local water, Linden town, Guyana, South America

John Cancalosi / Shattuckite, a copper bearing mineral, Tantara mine, Katanga province, Democratice Republic of Congo, Africa.

John Cancalosi / Goethite (FeO(OH)), an ore mineral of iron

John Cancalosi / Allanite (Ce,Ca,Y,La)2(Al,Fe+3)3(SiO4)3(OH). This is a sorosilicate group minerals and a rare mineral ore containing Cerium (Ce) from Kingman Pegmatite, Kingman, Arizona. This mineral occurs mainly in...

John Cancalosi / Chalcocite (copper(I) sulfide (Cu2S)) a copper ore, from Flambeau Mine, Ladysmith, Wisconsin, USA.

John Cancalosi / Zincite (ZnO) a mineral ore of zinc. from New Jersey, USA.