Alluvial and Placer Mineral Deposits | Geology for Investors
06/11/2020#0183;#32;Tin mining is vital to the regions economy to this day. Uranium. Placer mines have included Ido, paleoplacers in Arizona, Australia, Canada, and Namibia. Iron Sands. New Zealand has unusually pure iron sands on the beaches of the North Islands west coast. The low cost of mining supports the nearby steel mill at Glenbrook. Gemstones