evaporites are layered crystalline sedimentary rocks that form from brines generated in (2) ironstone—noncherty, essentially clastic-textured, iron-rich minerals of local extent. these deposits constitute the world's major source of iron ore.
chemical sedimentary rocks are dominated by components that have been solution as a result of a biological process or a change in the chemical conditions and will figure 6.2.6 an example of a banded iron formation with dark iron oxideGet Price
a chemical sedimentary ore is one in which the concentration of ore minerals accumulated as a result of precipitation from solutions at the earth's surface. allGet Price
an iron formation is a stratigraphic unit which is composed largely of ironstone. chemical sedimentary rocks are precipitates from a water body and/or diagenetic being the most voluminous chemical sedimentary ores, iron formations haveGet Price
calcite can form chemical sedimentary rocks on land in a number of environments. it is a deep sea-floor deposit of iron oxide that is a common ore of iron.Get Price