MINERAL RESOURCES AND MINING . The Handbook of Texas .
Jun 15, 2010 . Most of the gold produced has come as the by product of silver and copper ores, but traces of it occur in the Shafter, Van Horn, Allamore, and.
An Introduction to Native Metals logo
Jul 23, 2017 . Gold, silver, copper, and platinum are the least reactive of native . which is crushed and processed to remove gold traces though it . Most silver is mined as a by product from ores processed to obtain lead, copper, or zinc,.Get Price