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Copper : Cu
minID: XCT-U86

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In the course of removing mass copper from underground, miners would cut larger pieces of copper by hand with hammers and chisels, and in the process they would "chip" off small pieces of the copper. Many of these chips ended up on the waste rock piles and then buried by more material as it came out. Copper chisel chips, as they are known, can still be found in the piles with a little patience. This particular specimen was found in 2010 at the Central Mine located in Keweenaw County, Michigan. The specimen measures approx. 8 cm. across, making it a fairly large chip.

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Photo added: 18th Dec 2011

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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