enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

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. Marquette Iron Range - Wikipedia

   en.wikipedia.org/wiki/Marquette_Iron_Range

   The geology of the district consists of middle Precambrian rocks in the Animikie Group, which form a westward plunging syncline 33 miles (53 km) long and 3 to 6 miles (4.8 to 9.7 km) wide. The principal iron ore is found in the Negaunee Iron formation. This formation is 2,500 feet (760 m) thick near Negaunee. This is a magnetite or hematite chert.

5. Marble Cliff Quarry Co. - Wikipedia

   en.wikipedia.org/wiki/Marble_Cliff_Quarry_Co.

   In 1985, the Kaufmans sold the 2,000-acre (8.1 km 2) quarry to investors who filled in and developed the quarry for residential use, including Marble Cliff Commons [6] [2] [3] apartments and Marble Cliff Crossing, a 100 single-family and 60 double-family subdivision built between 1998 and 2003. [7]

6. Detroit salt mine - Wikipedia

   en.wikipedia.org/wiki/Detroit_salt_mine

   The Detroit salt mine is a salt mine located 1,100 ft (340 m) below Detroit, Michigan. [1] The mine opened in 1910 and covers 1,500 acres (610 ha) underground. [2] In the beginning, the leather and food industries were the primary customers. Today, road deicing salt is the primary product. [3]

7. List of U.S. state minerals, rocks, stones and gemstones

   en.wikipedia.org/wiki/List_of_U.S._state...

   Leaders of states in the U.S. which have significant mineral deposits often create a state mineral, rock, stone or gemstone to promote interest in their natural resources, history, tourism, etc. Not every state has an official state mineral, rock, stone and/or gemstone, however.