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I am rather partial towards native copper specimens; possibly because I grew up in Michigan, the home of copper mines that produced fabulous specimens. Well, Arizona is the home of some huge open-pit copper mines that also produce gorgeous native copper specimens. Shown above is a native copper specimen; just as it came out of the Ray Copper Mine in Pinal County, Arizona. The copper has a thick greenish coating of oxide. The specimen could be chemically cleaned to give the copper a bright red color, but why alter a specimen that is gorgeous as is? (M491, $22.50 Sold) |
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