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Stamp sand, photographed near Houghton, MI. Stamp sand is a coarse sand left over from the processing of ore in a stamp mill. [1] In the United States, the most well-known deposits of stamp sand are in the Copper Country of the Upper Peninsula of Michigan, where it is black or dark gray, and may contain hazardous concentrations of trace metals.
In the Michigan Basin, the sandstone is present in the eastern part of the state, thickest near Michigan's Thumb. [3] [4] The two deposits are separated by the Cincinnati Arch and are disconnected from each other. [3] The sandstone overlies the Bedford Shale and the Ohio Shale and underlies the Sunbury Shale. [2]
The Reclaiming Sand Dredge was constructed for the Calumet and Hecla Mining Company in 1914 by the Bucyrus Company of South Milwaukee, Wisconsin, [3] and designated the Calumet and Hecla Dredge Number One. [1] The dredge was used to reclaim previously-milled sand deposited in the lake after it had gone through the stamp mill. [4]
Nov. 30—Except for the oil and natural gas themselves, one of the oilfield's hottest commodities these days is the sand used to fracture or "frac" the bedrock formations and loosen them up for ...
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[25] [30] Sand and gravel were transported in streams that flowed northward out of the Northern Michigan Highlands, remnants of mountains formed during the Penokean orogeny. The streams leveled out along what is now the southern shore of Lake Superior, depositing sediment that formed the Jacobsville Sandstone. [ 9 ]
Name County Years Material Coordinates Adventure mine: Ontonagon: 1850–1920: copper: Alabastine Mine: Kent: 1907– gypsum: Arcadian mine: Houghton: 1898–1908: copper
Heavy minerals (dark) in a quartz beach sand (Chennai, India).Heavy mineral sands are a class of ore deposit which is an important source of zirconium, titanium, thorium, tungsten, rare-earth elements, the industrial minerals diamond, sapphire, garnet, and occasionally precious metals or gemstones.