Copper (drill scar) (1746)
specimen number:
8811428
location:
Houghton Co., Michigan, USA
description:
Interesting mining artifacts specimen, this is what is known as a drill scar, or a drill imprint left in copper. In super condition. At one time the specimen was part of the collection at Harvard University and comes with a label as such. Also at one time part of the collection of Ernest Schlichter and comes with his data card.
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