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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 ...
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 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]
DEQ Director Steven Chester said: "In the end, Kennecott's proposal met the high standard set by Michigan's environmental laws." [5] The Department of Natural Resources (DNR) issued a Surface Use Lease to Kennecott on February 7, granting use of a parcel of state land for surface facilities to be associated with the mine. The same four ...
The Jackson Mine is an open pit iron mine in Negaunee, Michigan, extracting resources from the Marquette Iron Range.The first iron mine in the Lake Superior region, [3] Jackson Mine was designated as a Michigan State Historic Site in 1956 [2] and listed on the National Register of Historic Places in 1971. [1]
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Brule River at the M-189–WIS 139 crossing. The Brule River is a 52.3-mile-long (84.2 km) [1] river in the U.S. states of Michigan and Wisconsin.Nearly, almost all of the course forms a portion of the boundary between the two states.
There is also a natural ski hill by Lake Superior at Porcupine Mountains State Park, less than an hour from Ironwood. The Copper Peak Ski flying hill is located near Ironwood, Michigan. This facility is the only ski flying hill in the western hemisphere, and hosted 10 ski flying events between 1970 and 1994.