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approximately 54 million years ago
blue-to-green mineral that is a hydrous phosphate of copper and aluminum
known for its unique
5” x 6” and weighs 1 lb 15 oz
This item is 3" x 3" and weighs 6
Native Copper | Michigan S approximately 54 million years agoThis slab of native copper comes from Michigans Upper Peninsula, a region famous for producing some of the highest quality copper specimens in the world. The piece displays classic metallic luster, natural reddish brown tones, and distinct growth patterns preserved within the copper mass. Michigan copper formed when hydrothermal fluids deposited pure native copper within basalt flows, creating impressive masses like this one. A substantial and
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