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2. Michigan Limestone and Chemical Company - Wikipedia

   en.wikipedia.org/wiki/Michigan_Limestone_and...

   The Michigan Limestone and Chemical Company operated the world's largest limestone quarry (Michigan Limestone; a/k/a the "Calcite Quarry"; "Calcite Plant and Mill"; and "Carmeuse Lime and Stone"), which is located near Rogers City in Presque Isle County, Michigan. It was formed and organized in 1910; however, production did not begin until 1912.

3. List of mines in Michigan - Wikipedia

   en.wikipedia.org/wiki/List_of_mines_in_Michigan

   Name County Years Material Coordinates Adventure mine: Ontonagon: 1850–1920: copper: Alabastine Mine: Kent: 1907– gypsum: Arcadian mine: Houghton: 1898–1908: copper

4. Marquette Iron Range - Wikipedia

   en.wikipedia.org/wiki/Marquette_Iron_Range

   The Marquette Iron Range is a deposit of iron ore located in Marquette County, Michigan in the United States. The towns of Ishpeming and Negaunee developed as a result of mining this deposit. A smaller counterpart of Minnesota's Mesabi Range , this is one of two iron ranges in the Lake Superior basin that are in active production as of 2018.

5. Back Forty Mine - Wikipedia

   en.wikipedia.org/wiki/Back_Forty_Mine

   The project was originally proposed as a 750-foot deep (230 m) open-pit mine on 83 acres (34 ha) to extract gold, zinc and other metals. An on-site processing mill will crush and refine minerals and ores through flotation, separation and the use of cyanide. [2]

6. Copper mining in Michigan - Wikipedia

   en.wikipedia.org/wiki/Copper_mining_in_Michigan

   This series of lava "is at least 15,000 feet thick in the Michigan copper district" and consists of "several hundred flood basalt flows." The district rocks are Precambrian in age and belong to the Keweenawan Series. The first six years of mining exploited the fissure deposits, then gave way to the amygdaloidal deposits.

7. Gogebic Range - Wikipedia

   en.wikipedia.org/wiki/Gogebic_Range

   Iron minerals make up one third of the formation content, the rest being quartz. The formation was discovered in 1848 by Dr. A. Randall during the Fourth principal meridian survey near Upson, Wisconsin. Ore was first produced in 1883 from the Colby Mine in Michigan. [1]: 19, 23, 90–91, 184