Apr 29, 2020·Iron oreis any rock that contains a usable quantity ofiron. Commonoreminerals include hematite, magnetite, limonite, and siderite, and these are frequently found together with assorted silicates. Althoughirondoes not occur in its pure form in nature, some kinds oforecontain up to 70%ironatoms.Iron oreconsists of oxygen andiron...