$500Median
608Sold (12 mo)
$70Last sale
Copper
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Unusual locality example for the species, bright crystallized native copper coming off of a small amount of matrix. Complete all around. These are not often seen available on the market.The Weyerhauser Mine in Douglas County, Wisconsin, was an ambitious copper exploration and extraction project that operated primarily during the late 1800s and early 1900s. Geologically, the site is situated within northern Wisconsin's Precambrian basaltic lava flows and trap rock ranges, where native copper occurs within fissure veins and amygdaloidal cavities. Despite exploratory shafts and intermittent work periods, the venture ultimately yielded only small amounts of copper ore and was closed and abandoned, leaving behind overgrown trenches and flooded test pits.
Product details
SpeciesCopper
SizeSmall Cabinet
Dimensions9.0 x 5.0 x 3.0 cm
Added on09/24/2026
LocalityWeyerhauser Mine, Douglas Co., Wisconsin, USA
Current owner
Unknown Owner
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
Comments