Metal Flux from Dissolution of Iron Oxide Grain Coatings in Sandstones

Iron oxide grain coatings in red sandstones contain trace metals that are released upon dissolution of the coatings. Analyses by ICP-MS following acid leaching show dissolved can constitute an ore-forming fluid, as hypothesized models for sandstone-hosted ore deposits. Median compositions 37 samples, mostly Triassic to Devonian age, from across Britain and Ireland 6.3 ppm copper, 2.4 cobalt, 10.1 vanadium, 0.3 uranium. These contents at basin scale adequate form observed range deposits beds. The migration hydrocarbons or brines cause contributes controlling distribution Future measurements should test beds derived uplifted, mineralized plate margins, which may be preloaded with metals.