Basalt - WikipediaBasalt is a common extrusive igneous (volcanic) rock formed from the rapid cooling of basaltic .. Note white plagioclase "microlites" in cross-polarized light picture, .. including gold deposits, copper deposits, volcanogenic massive sulfide ore . Underwater basalt deposits, scattered in seas around the globe, have the.gold ore in white basalt,Ore genesis - WikipediaLode gold deposits are usually hosted in basalt or in sediments known . rely on gold existing in the fluids associated with the magma (White,.
gold ore in white basalt