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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. Jacobsville Sandstone - Wikipedia

   en.wikipedia.org/wiki/Jacobsville_Sandstone

   Jacobsville Sandstone is generally red, due to small quantities of iron oxides, mottled with various pinks, whites and browns. [14] The sandstone exhibits many white streaks and spherical spots, caused by leaching and bleaching, which form sharp boundaries with surrounding colors.

4. Oldcastle Materials - Wikipedia

   en.wikipedia.org/wiki/Oldcastle_Materials

   Oldcastle Materials Inc. is a supplier of asphalt, concrete, and other building materials, and also offers construction and paving services. The Atlanta-based company is a subsidiary of CRH plc, a publicly traded international group of diversified building materials businesses, [2] [3] and has approximately 18,000 employees at 1,200 locations, as of March 2018.

5. 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

6. 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

7. 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.