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Copper And Molybdenum Deposits In The United States
Copper and molybdenum resources were not recognized as valuable
commodities until economic needs demanded the collection and processing of these
minerals in large amounts. The most expansive deposits of copper and molybdenum
occur in massive low grade ores and are found in intrusive porphyry formations,
although many smaller sized but higher grade ores are located in non-porphyry
areas. The nation has abundant domestic copper ore reserves but because of many
detrimental economic factors much of the copper used by the U.S. industry is
imported. Molybdenum ore is profuse ....
Word count: 2613 - Page count: 10
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