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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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Album caption: Cut JKO showing dumps. Himalaya mine, Cal. Handwritten notes on album caption: Mesa Grande. Ramona Q. 1904. No index card available.
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Giles, Alabama. Looking northeast in cut of Central Iron & Coal Company brown iron ore mine after period of heavy rain. Tip of boom of steam shovel just shows above water level in lower left-hand corner of pond. Bibb County, Alabama. December 5, 1929.
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Schist. Douglas Island. Southeast of Bullion Mine. Alaska, cc 1985.
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Photomicrograph of pseudomorphic quartz and adularia after calcite; from Pick and Shovel mine, 100-foot level. Example of cellular, drusy, radial, and bladed structures characteristic of the Jarbidge veins. Magnified 25 diameters. Elko County, Nevada. 1910. Plate 9 in U.S. Geological Survey. Bulletin 497. 1912.
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Exposure of coarse alluvial material on No.1 bench near head of Armells Creek east of Hilger, sec. 1, T. 17 N., R. 19 E. (See image 1134.) Fergus County, Montana. August 13, 1921.
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Album caption: Drumlin profile from the north. NW 1/4, sec. 5, T. 5 N., R. 12 E. Stoughton quadrangle. Dane County, Wisconsin. July 21, 1902.
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Photomicrograph of fresh and metamorphosed limestone, fresh blue limestone, metamorphosed limestone, white marble, no. 7 tunnel Highland Boy mine, adjacent to intrusive, showing rock altered almost entirely to coarse granular calcite. Salt Lake County, Utah. 1900, plate 29-B in U.S. Geological Survey. Professional paper 38. 1905.
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Form a panorama. Park City monocline shows monoclinal structure of sedimentary formations. Weber quartzite in foreground, Park City formation capping first spur. Thaynes formation on the second and third cuestas, and heavy Triassic sandstone forming the prominent cuesta in the right background, all dipping northwest. Park City in middle ground; Ontario mill in left foreground, and Silver King mine and Crescent Ridge in left background, looking southwest. Summit County, Utah. Circa 1904. Plate 4-A in U.S. Geological Survey. Professional paper 77. 1912.
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Hydraulic mine, North San Juan, Bedrock in foreground; auriferous gravel in bluff, Nevada County, California, 1905.
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A structure in large cleavage sheets of muscovite. Typical flat A sheet below; color zoning shows a left edge of sheet above. Southeastern United States. Figure 28, in U.S.Geological Survey Professional paper 248-A. 1953.
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Ruled mica book in kaolinized pegmatite, Big Bess mine. Gaston County, North Carolina. Figure 32, in U.S.Geological Survey Professional paper 248-A. 1953.
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Electrum showing crystal outlines associated with quartz and sulphides. The argentite was very probably formed by the replacement of galena, but all the other minerals are believed to be alpha hypo gene. Photomicrograph of polished surface of ore from 1,260- foot level, Murray vein, Tonopah Extension mine. Nye County, Nevada. 1915. Plate 5- B, with graphics, in U.S. Geological Survey. Professional paper 104. 1918.
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Coal Mine Subsidence near Sheridan, Wyoming. Surface subsidence effects above abandoned coal mines 10 to 15 kilometers north of Sheridan. Subsidence depressions and pits above the Old Monarch Mine in operation from 1904 to 1921. Rectangular depressions, some of which are bounded by pits, are evident on the right. Some of the pits are sealed at the bottom and provide sufficient moisture to support trees (foreground). Overburden thickness is estimated to be approximately 10 to 15 meters. The depressions occur where much of the coal is removed and the remaining coal cannot support the weight of the overburden. Pits at the margins of the depressions commonly are caused by piping failure and the local flow of surface...
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Dragline equipment at work, Culbert mine, Upson County, Georgia. Circa 1943. Figure 50, in U.S.Geological Survey Professional paper 248. 1953.
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Comb quartz and carbonates: polished section of vein composed of quartz and carbonates, North Star mine No. 2 vein, 8,600-foot level: Opposite saw-cut face of photo 81. Nevada County, California. 1931. Plate 18-A, U.S.Geological Survey Professional paper 194. 1940.
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Topography of the Oatman district: Leland Hill from the southeast, the shaft and mill low down in front of the hill are those of the Vivian mine. Higher and a little to the left is the Mitchell shaft of the Leland vein is marked by a line of tunnels and dumps to the right or east slope of the hill. The prevailing rock in the view is the Alcyone trachyte. Mohave County, Arizona. 1921. Plate 3-B in U. S. Geological Survey. Bulletin 743. 1923.
map background search result map search result map Drumlin profile from the north. Wisconsin, 1902. Ruled mica book in kaolinized pegmatite, Big Bess mine. Gaston County, North Carolina. 1953. Dragline equipment at work, Culbert mine, Upson County, Georgia. Circa 1943. Comb quartz and carbonates, North Star mine No. 2. Nevada County, California. 1931. Cut JKO showing dumps, Himalaya Mine. Mesa Grande, San Diego County, California. 1904. Turner emerald mine, southwest of Shelby. Cleveland County, North Carolina. 1912. Dragline equipment at work, Culbert mine, Upson County, Georgia. Circa 1943. Ruled mica book in kaolinized pegmatite, Big Bess mine. Gaston County, North Carolina. 1953. Drumlin profile from the north. Wisconsin, 1902. Comb quartz and carbonates, North Star mine No. 2. Nevada County, California. 1931. Turner emerald mine, southwest of Shelby. Cleveland County, North Carolina. 1912. Cut JKO showing dumps, Himalaya Mine. Mesa Grande, San Diego County, California. 1904.