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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.
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Album caption and index card: Ore from Shaffer vein, Freeland mine, McClelland tunnel level, 35 feet east of Shaffer raise, 1,325 feet below surface. Ankerite (a) and pyrite (p) broken and cemented by dark fine-grained quartz (q) sphalerite (s) seamed by tetrahedrite (t) which is closely associated with dark quartz (q). Summit County, Colorado. Notes: Published as figure LX-F in U.S.Geological Survey. Professional Paper 223. 1950.
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Album caption and index card: View west from the summit of Mount Lincoln. The foreground is the continuation from Bross to Lincoln. At the right are the buildings highest mine in the United States. In the distance is the Sawatch Range, lying west of the Arkansas. The prominent peaks in the range are Grand, Elbert, La Plata, and Harvard, the highest mountains in the whole Rocky Mountain chain. Lake, Park, and Summit Counties, Colorado. 1873.
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Photomicrograph of polished section. Large grains of early pyrite coated with marcasite. Sphalerite and chalcopyrite fill cavity between pyrite grains. X 175, Lucky Strike mine. Summit County, Colorado. Circa 1963. Published in US Geological Survey Professional Paper 652, figure 18-B. 1971.
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EXPLORATION: U.S. Geological and Geographical Survey of the Territories (Hayden Survey) Sheet number 27. Rock sample, Grizzly Peak. Colorado, 1873.
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Panoramas looking south from the south end of Teller Mountain near the Cashier Mine; glacial trenching of the Flattop peneplain is well shown. Summit County, Colorado. Circa 1927. Plate 8-B, U.S. Geological Survey, Professional paper 178. 1935.
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Album caption: Main vein of Wellington mine, Oro third level, cut by flat fault dipping south (see mine notebook): 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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View of the Blue River, from near Ute Peak, and from an elevation of over 1,000 feet above the river. On the right, in the distance, are the spurs of the Blue River Mountains, nearly obscured by storm clouds. Summit County, Colorado. 1874.
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Album caption and index card: Panorama from summit of Mount Lincoln. On the right is Hoosier Pass. Park County, Colorado. 1873. (Panorama with photo nos. 366, 368 - 369, 371). Handwritten notes on album caption: See also photo no. 1353 (jwh01353). Descriptive Catalog of the Photographs of the United States Geological Survey of the Territories, W. H. Jackson, Photographer, Second Edition, Illustrated, 1873 Series, pages 56-57, nos. 79-84: A PANORAMA IN SIX SECTIONS FROM THE SUMMIT OF MOUNT LINCOLN, situated upon the western extreme of South Park, slightly detached from the main range or the "divide," which here turns abruptly to the west, to Tennessee Pass, and its junction with the Sawatch range. Its elevation,...
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Album caption: Looking N.W. from Stat. C. of the D.M.W.W. shows northeastward dipping Pierre Shale in the right middle distance and the anticlinal structure due to the Dakota Sandstone which has been cut through by the Snake River in left middle distance. Summit County, Colorado. No index card available. Notes: Published as plate VII-B in U.S. Geological Survey. Professional Paper 178. 1935.
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Panorama looking east up: the Snake River from the conical shale hill 1 mile west of the Montezuma quadrangle. Calcareous layers in the Pierre shale form the bluffs on the north side of the river; the low hill in the right middle distance is part of the terminal moraine west of Keystone. The outwash gravel makes the plain in the foreground and the middle distance from the Wisconsin glacier. Summit County, Colorado. circa 1928, Plate 8-A, U.S. Geological Survey, Professional paper 178. 1935
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Photomicrograph of polished section. Pyrrhotite partly replaced by pyrite and marcasite. Galena cuts across earlier pyrrhotite at top. Dark-gray areas are quartz. X 60, Michigan mine. Summit County, Colorado. Circa 1963. Published in US Geological Survey Professional Paper 652, figure 15-B. 1971.
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Album caption and index card: Front range of the Rocky Mountains from near Gray's and Torrey's Peaks. View to the east and to the twinpeaks, Evans and Rosalie, which lie almost directly between this point and Denver. They are detached from the main mountain range and stand out from it to the east, and are consequently the most prominent, as seen from Denver. Clear Creek, Park and Summit Counties, Colorado. 1873. (Panorama with nos. 1310 -1312; jwh01310, jwh01311, jwh01312 and 1314 - 1315; jwh01312, jwh01313, and jwh01315)
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Photomicrograph of polished section. Vugs Composite bleb of pyrrhotite, galena, and chalcopyrite in sphalerite. Other minerals are pyrite and carbonate gangue. X500, Wilfley mine. Summit County, Colorado. Circa 1963. Published in US Geological Survey Professional Paper 652, figure 15-D. 1971.
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Album caption and index card: Photomicrograph of copper-lead-zinc ore from Stevens mine, Argentine district. Chalcopyrite (cp) replaces sphalerite (s) and both are replaced by galena (g). q, Quartz. Summit County, Colorado. Notes: Published as figure LX-B in U.S.Geological Survey. Professional Paper 223. 1950.
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Album caption and index card: Photomicrograph showing part of area on photograph 725. Ore and fragments of sericitized schist in fine-grained vuggy quartz. Explanation of symbols is the same as photograph 725. [opal (ov); b, barite; cq, chalcedonic quartz; g, gold; p, petzite; s, sylvanite] Crossed nicols and oblique illumination combined. Summit County, Colorado. Notes: Published as figure LX-D in U.S.Geological Survey Professional paper 223. 1950.


map background search result map search result map Panorama from summit of Mount Lincoln with Hoosier Pass to the right. Park and Summit Counties, Colorado. 1873. View of the Blue River, from near Ute Peak, Summit County, Colorado. 1874. View on the Blue River, looking west across the river. Summit County, Colorado. 1874. (Stereoscopic view) View on the Blue River, looking west across the river. Summit County, Colorado. 1874. (Stereoscopic view) View west from the summit of Mount Lincoln. The foreground is the continuation from Bross to Lincoln. Lake, Park, and Summit Counties, Colorado. 1873. Front range of the Rocky Mountains from near Gray's and Torrey's Peaks. Clear Creek, Park, and Summit Counties, Colorado. 1873. Gray's Peak. Summit County, Colorado. 1873. Main vein of Wellington mine. Summit County, Colorado. 1926. Panorama looking east up: the Snake River. Summit County, Colorado. 1928. View from Station C, showing dipping Pierre Shale. Summit County, Colorado. circa 1932. Copper-lead-zinc ore from Stevens mine. Summit County, Colorado. 1932. Photomicrograph showing ore and fragments of sericitized schist in fine-grained vuggy quartz. Summit County, Colorado. circa 1932. Ore from Shaffer vein, Freeland mine. Summit County, Colorado. 1932. View on the Blue River, looking west across the river. Summit County, Colorado. 1874. (Stereoscopic view) View on the Blue River, looking west across the river. Summit County, Colorado. 1874. (Stereoscopic view) Gray's Peak. Summit County, Colorado. 1873. Main vein of Wellington mine. Summit County, Colorado. 1926. Panorama looking east up: the Snake River. Summit County, Colorado. 1928. View of the Blue River, from near Ute Peak, Summit County, Colorado. 1874. Panorama from summit of Mount Lincoln with Hoosier Pass to the right. Park and Summit Counties, Colorado. 1873. View west from the summit of Mount Lincoln. The foreground is the continuation from Bross to Lincoln. Lake, Park, and Summit Counties, Colorado. 1873. Front range of the Rocky Mountains from near Gray's and Torrey's Peaks. Clear Creek, Park, and Summit Counties, Colorado. 1873. View from Station C, showing dipping Pierre Shale. Summit County, Colorado. circa 1932. Copper-lead-zinc ore from Stevens mine. Summit County, Colorado. 1932. Photomicrograph showing ore and fragments of sericitized schist in fine-grained vuggy quartz. Summit County, Colorado. circa 1932. Ore from Shaffer vein, Freeland mine. Summit County, Colorado. 1932.