US Ranked Fifth Globally with 35 Million Tonnes (Mt) of Copper Reserves

Date: 2015-09-10

“• In 2014, the US ranked fifth globally with 35 million tonnes (Mt) of copper reserves, a 5% share of the global total. Copper reserves are mainly found in Arizona, Utah, New Mexico, Montana, Alaska, Nevada and Michigan, with Arizona having one of the world’s three great clusters of porphyry copper deposits. 

• The zinc-lead content in the Mississippi Valley type (MVT) deposit ranges from 5–10%.

• The copper mining industry is expected to benefit from planned investments such as in the Cumo deposit at the south-western end of the Idaho-Montana porphyry belt and at Kennecott’s Bingham Canyon mine which would extend the mine’s life from 2018 to 2030. “

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