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Figure 1. The color changes of copper changes as it is chemically weathered at Earth's surface. Used with permission of the Copper Development Association Inc.
Originally uploaded in NAGT:Our Resources:In the Trenches:2019 - Volume 9:In The Trenches - April 2019.

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Uploaded: Aug29 19

Last Modified: 2019-08-29 15:43:05
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Adam C. Simon and Steve Kesler, Department of Earth and Environmental Sciences, University of Michigan
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