Silver is found with gold, eg at Wanlockhead lead mines in the Southern Uplands of Scotland enough gold was found to make the crown of Scotland or at least some bits of regal tat, not sure of the details. read more
So where there’s one mineral, there will often be others. The Caldbeck Fells in northern Lakeland, England, have lead, copper, zinc, tungsten. Not far away are (or were) gold and graphite. Lead, silver, zinc precipitate out at roughly the same temperature/pressure point so are quite often found mixed up together. read more
It is very common for deposits of metal ores to include ores of other metals. Common combinations, besides lead-silver, include copper-gold-silver-platinum-mercury, gold-uranium, nickel-copper-iron and many others. read more
Lead and Zinc Lead and zinc ores are usually found together with gold and silver. A lead-zinc ore may also contain lead sulfide, zinc sulfide, iron sulfide, iron carbonate, and quartz. When zinc and lead sulfides are present in profitable amounts they are regarded as ore minerals. The remaining rock and minerals are called gangue. read more