Native Michigan Copper in Basalt host rock with other minerals. This is a very unique specimen because it is highly veined with copper and a greenish colored mineral in basalt rock. You can actually see the veins running through the rock.
I sanded this with 100, 220, 300 and 400 grit sandpaper and then hand rubbed multiple coats of natural shellac to protect the copper from oxidizing. This specimen may still show some signs of saw marks because I was careful not to sand too deep and sand off the copper and other visible minerals.
These make great display specimens or can be cut for jewelry. These also make great gifts.
See photos for weight and measurements. 9.5 oz.
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