Exam 13: Mineral and Rock Resources

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All of the following are extensively recycled except

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Sedimentary iron ores that are layered are called

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Hydrothermal ore deposits

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Which of the following would be least readily recycled?

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An igneous rock from which larger,gem-quality diamonds may be mined is

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The concentration factor of an ore is a measure of its enrichment in a metal of interest,relative to average crustal rock.

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What rock or mineral resource is used in the greatest quantity?

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Recycling of steel is relatively difficult because alloys of specific composition may be required for specific applications.

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The United States has no reserves of

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Quarrying is a variety of

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If demand could be held constant at 2002 levels,many world mineral reserves would still be depleted within decades.

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In the United States,we use many times greater amounts of rock resources,like sand and gravel,than we do of metals like iron and copper.

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