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mineral hw

mineral hw - Gold also occurs in underground “veins”...

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Alexandra Churbuck 9-14-08 A. Gold B. Au C. South Africa, China, United States, Australia, Russia, and Peru. D. Map E. Annual consumption in 2005= 277 metric tons. Annual consumption 2006= 130 metric tons. F. The raw form of this material comes in ores (a rock containing the mineral.) After a chemical or physical change in the ore, the gold can break off to form nuggets. Gold doesn’t react chemically or when heated, so when the minerals surrounding the gold in the ore are subjected to such things as metamorphism, the gold remains.
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Unformatted text preview: Gold also occurs in underground “veins” and alluvial deposits. Gold looks somewhat similar to the example of raw copper that Ms. Blum passed around in lecture. Resources used: Kelly, Thomas, and Grecia Matos. "Historical Statistics for Mineral Commodities in the United States." Historical Statistics for Mineral Commodities in the United States . 17 Apr. 2008. U.S Geological Survey. 14 Sept. 2008 <http://minerals.usgs.gov/ds/2005/140/>. http://www.britannica.com/#search=tab~TOPICS%2Cterm~gold...
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