en2015-08-18 18:03 PM CESThttp://inspire.ec.europa.eu/codelist/LithologyValue/ironRichSediment:1http://inspire.ec.europa.eu/codelist/LithologyValue/ironRichSedimentSediment that consists of at least 50 percent iron-bearing minerals (hematite, magnetite, limonite-group, siderite, iron-sulfides), as determined by hand-lens or petrographic analysis. Corresponds to a rock typically containing 15 percent iron by weight.