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This map layer includes refractory, abrasive, and other industrial minerals operations in the United States. The data represent commodities covered by the Minerals Information Team (MIT) of the U.S. Geological Survey, and the operations are those considered active in 2003 and surveyed by the MIT. This is a revised version of the June 2004 map layer.
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Outlines of areas mined for the Springfield coal in Illinois as of January 1, 1996. This information was extracted from detailed coal mine data stored in the ISGS Coal Section library database. Lines delineate the approximate outer boundary of individual mines (if known) or general mined areas. Interior mine boundaries such as pillars or small blocks of unmined coal are commonly not depicted. Outlines have been compiled from a variety of sources. Outlines of areas mined before 1987 are commonly from source maps at scales of 1:62,500 or smaller. Outlines of areas mined since 1987 are commonly digitized at scales ranging from 1:4800 to 1:12,000. Mines whose extent is not known or which only mined a few acres are not...
Categories: Web Site; Tags: 17005 = Bond, 17011 = Bureau, 17017 = Cass, 17019 = Champaign, 17021 = Christian, All tags...
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This map layer includes sand and gravel operations in the United States. These data were obtained from information reported voluntarily to the USGS by the aggregate producing companies. The data represent commodities covered by the Minerals Information Team (MIT) of the U.S. Geological Survey, and the operations are those considered active in 2002 with production greater than 50,000 tons, which are non-government, non-portable, and surveyed by the MIT. This is a replacement for the January 2001 map layer.
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Sulfide replacement of fossil wood from the Agua Zarca Member of the Chinle Formation, at the Nacimiento mine. Reflected light; sample CU-10J. Sandoval County, New Mexico. Published as figure 8 in the U.S. Geological Survey. Professional paper 907-C. 1976.
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Looking south toward the Porter Mine from the wagon road east of Crested Butte. Shows the gravity incline over which the coal is lowered from the mine to the railway. Gunnison County, Colorado. June 23, 1909.
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Northern Hill at Willamette Pulp and Paper company's magnesite near Porterville, looking nearly north, nearly vertical vein (near or at the smaller mine adit). The lower line ascending toward the right is a tramway; the upper one is a wagon road. Tulare County, California. 1905. Plate 10-A and B printed as a panorama in U.S. Geological Survey. Bulletin 355. 1908.
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Album caption: Turner emerald mine, 4¾ miles S. 30° W. of Shelby. View about west at mine and hill in which emeralds have been found. 5x7. Cleveland Co., North Carolina. Index card: Breaking pegmatite matrix and emerald sorting. Note: This image was scanned from the glass plate negative.
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Photomicrograph showing zoned enclosures and vacuoles: euhedral quartz surrounded by fine-grained ankerite and chlorite. Empire mine, 7,000-foot level. Plain light. Nevada County, California. 1931. Plate 21-D, U.S.Geological Survey Professional paper 194. 1940.
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Main vein of Wellington mine, Oro third level, cut by flat fault dipping south vein follows intrusive contact of porphyry; shale above porphyry and vein to right; jasper (?) to left. Breckenridge district, Summit County, Colorado. ca. 1926.
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Album caption and index card: Hiddenite mine; 1/2 mile west of Hiddenite. Mining under W.E. Hidden, in the early days. Alexander County, North Carolina. n.d. Handwritten notes on album caption: Circa 1886-1889. Note on photograph: Image scanned from glass plate negative.
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Structural relations of formations at Willow mine, Van Houten; north wall of canyon at the mine, showing from top to bottom Raton formation, basal conglomerate of the Raton, unconformity between Vermejo and Raton formations, coal bed within Vermejo and Trinidad sandstone. Colfax County, New Mexico. 1910. Plate 9-A, with sketch, in U.S. Geological Survey. Professional paper 101. 1917.
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Photomicrograph of polished section. Late fine-grained pyrite deposited contemporaneously with quartz and carbonate that are later than sphalerite and galena. X 60, Wilfley mine. Summit County, Colorado. Circa 1963. Published in US Geological Survey Professional Paper 652, figure 15-C. 1971.
map background search result map search result map Mined areas of the Springfield Coal in Illinois Sand and Gravel Operations in the United States Photomicrograph showing zoned enclosures and vacuoles. Nevada County, California. 1931. Refractory, Abrasive, and Other Industrial Minerals Operations Hiddenite Mine, Alexander County, North Carolina. Circa 1886-1889. Turner emerald mine, southwest of Shelby. Cleveland County, North Carolina. 1912. Hiddenite Mine, Alexander County, North Carolina. Circa 1886-1889. Photomicrograph showing zoned enclosures and vacuoles. Nevada County, California. 1931. Mined areas of the Springfield Coal in Illinois Turner emerald mine, southwest of Shelby. Cleveland County, North Carolina. 1912. Refractory, Abrasive, and Other Industrial Minerals Operations Sand and Gravel Operations in the United States