English Ore Cited by user Shrekinspector on 20 Mar 2023 Ore is natural rock or sediment that contains one or more valuable minerals concentrated above background levels, typically containing metals, that can be mined, treated…
English Banded iron formation Cited by user Kent G. Budge on 17 Jun 2020 Banded iron formations (also known as banded ironstone formations or BIFs) are distinctive units of sedimentary rock consisting of alternating layers of iron oxides and…