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The Back Forty Mine is a proposed open-pit metallic sulfide mine targeting gold and zinc deposits in Menominee County in the South Central part of Michigan's Upper Peninsula next to the Menominee River. Aquila Resources submitted its first permit applications to the state of Michigan in 2015. [1]
A substantial proportion of the gold is "invisible gold" incorporated into the pyrite (see Carlin-type gold deposit). It has been suggested that the presence of both gold and arsenic is a case of coupled substitution but as of 1997 the chemical state of the gold remained controversial. [15]
The density of pyrite also means the fool's gold material thoroughly filled in tiny areas where the arthropod's body once lay in sediment − including internal body parts, scientists said. "These ...
Name County Years Material Coordinates Adventure mine: Ontonagon: 1850–1920: copper: Alabastine Mine: Kent: 1907– gypsum: Arcadian mine: Houghton: 1898–1908: copper
The hope is that the income from these metals could lead to more prosperity than the islanders had ever imagined. Except the promise of deep sea mining may carry an environmental price.
A creature that scuttled along the seafloor 450 million years ago has been preserved in a rare and striking fossil that formed in fool’s gold.
Secret Ravine is a perennial tributary of Miners Ravine which shortly thereafter runs into Dry Creek in Placer County, California. Its course lies within the cities of Rocklin, Loomis, and Roseville, as well as unincorporated parts of Placer County. It passes through the campus of Sierra College.
By contrast on July 13, 1988, during a severe drought, a measuring station found 0 cu ft/s (0 m 3 /s) of water flow. Most of the flow of the river is diverted through the Detroit Edison plant and discharged into Plum Creek. Previously it was discharged into the river, but it is now diverted to limit additional pollution of the river mouth area.