volcanic rock shows polymetallic ores as glowing orange lava flows through the cracks

environmental polymetallic stratigraphy environment exploration composition extraction formations processing activities geological properties management techniques mineralogy landscape resources formation materials volcanic minerals activity deposits chemical analysis eruption tectonic resource research features glowing geology science texture natural igneous crustal surface orange cracks nature energy mining survey layers mantle impact shows flows rocks earth types crust study rock ores lava heat flow ore