Hitzman, Murray WalterWinterbourne, David2016-07-182022-02-092016-07-182022-02-092000https://hdl.handle.net/11124/170365Includes bibliographical references.Includes illustrations, maps.masters thesesengCopyright of the original work is retained by the author.Porphyry -- Mexico -- San Luis Potosí (State)Gold ores -- Mexico -- San Luis Potosí (State)Silver ores -- Mexico -- San Luis Potosí (State)Geology -- Mexico -- San Luis Potosí (State)Text