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Stamp Sand Along The Keweenaw Shoreline: Solid And Dissolved Copper & Effects On Biota, Gary Swain
Stamp Sand Along The Keweenaw Shoreline: Solid And Dissolved Copper & Effects On Biota, Gary Swain
Dissertations, Master's Theses and Master's Reports
Stamps sand refers to the regional colloquialism for the mine-tailing byproducts generated from copper (Cu) ore processing mills located in Michigan’s Keweenaw Peninsula. In the Keweenaw region, copper extracted from basalt ores resulted in a legacy of 100’s of millions of metric tonnes of stamp sand wastes, including 22.7 million metric tonnes at Gay, MI. Trace amounts of Cu persist in stamp sands and when leached have toxic enough concentrations to influence aquatic biota. To better understand stamp sands’ properties, we ran experiments and compiled data about the solid and dissolved phases of Cu. Solid phase concentration of Cu was …