4.6\" Rough NATIVE COPPER Specimen - Keweenaw Peninsula, Michigan For Sale
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4.6\" Rough NATIVE COPPER Specimen - Keweenaw Peninsula, Michigan:
Rough Native Copper
4.68\" x 2.8\" x .9\"
119mm x 71mm x 23mm
Keweenaw Peninsula, Michigan
4.6\" Native Copper specimen from Michigan. A fantastic natural rough copper formation rich in golden copper color. Michigan\'s Keweenaw Peninsula is the most important locality in the world for pure native copper. Mining began in 1845 and continued until 1968 and over 5 million tons of refined copper was recovered from the mines. In the early 1900s it led the world in copper production and \"Lake Copper\" was the purity standard to which other refined copper was compared. Long before the mining operations began in the past century, pre-historic people mined copper from the mineral rich veins. A beautiful rough native copper specimen great for display, collection, and study.
Saveshipping costs by combiningsale itemsfor a period of up to a couple weeks. Shipping cost iscalculated based upon actual shipping and packaging costs depending on deliveryaddress and item weight and size with our discounted postal rates.We sendout combined shipping invoices after all sales have ended for the day or youcan request one at any time. If for any reason you are unhappy with yourpurchase, you may return your item within14 days of delivery for a fullpurchase price refund, shipping costs are non-refundable.
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