No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf900M","usgsCitation":"Wynn, J.C., and Dansereau, D., 1978, Complete Bouguer gravity map of the San Lorenzo and Hillsboro quadrangles, Grant and Sierra counties, New Mexico: U.S. Geological Survey Miscellaneous Field Studies Map 900, 41.1 x 31.8 inches, https://doi.org/10.3133/mf900M.","productDescription":"41.1 x 31.8 inches","costCenters":[],"links":[{"id":180645,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":276317,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0900m/plate-1.pdf","text":"Plate","size":"35.12 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Plate"}],"country":"United States","state":"New Mexico","county":"Grant County, Sierra County","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -108,32.75 ], [ -108,33 ], [ -107.5,33 ], [ -107.5,32.75 ], [ -108,32.75 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a834c","contributors":{"authors":[{"text":"Wynn, J. 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A.","contributorId":42575,"corporation":false,"usgs":true,"family":"Steven","given":"T.","middleInitial":"A.","affiliations":[],"preferred":false,"id":264670,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":61384,"text":"mf928P - 1978 - Generalized isopach map of the ledge sandstone member of the Ivishak Formation, eastern North Slope petroleum province","interactions":[],"lastModifiedDate":"2012-02-10T00:10:43","indexId":"mf928P","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1978","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"928","chapter":"P","title":"Generalized isopach map of the ledge sandstone member of the Ivishak Formation, eastern North Slope petroleum province","language":"ENGLISH","doi":"10.3133/mf928P","isbn":"060780405X","usgsCitation":"Levorsen, J., Pessel, G.H., and Tailleur, I., 1978, Generalized isopach map of the ledge sandstone member of the Ivishak Formation, eastern North Slope petroleum province: U.S. Geological Survey Miscellaneous Field Studies Map 928, 1 map ;51 x 73 cm. --, https://doi.org/10.3133/mf928P.","productDescription":"1 map ;51 x 73 cm. --","costCenters":[],"links":[{"id":105639,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_6760.htm","linkFileType":{"id":5,"text":"html"},"description":"6760"},{"id":180031,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"500000","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -153,69 ], [ -153,71 ], [ -144,71 ], [ -144,69 ], [ -153,69 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b25e4b07f02db6aedb2","contributors":{"authors":[{"text":"Levorsen, J.A.","contributorId":70848,"corporation":false,"usgs":true,"family":"Levorsen","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":265555,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pessel, G. H.","contributorId":12554,"corporation":false,"usgs":true,"family":"Pessel","given":"G.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":265553,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tailleur, I.L.","contributorId":59027,"corporation":false,"usgs":true,"family":"Tailleur","given":"I.L.","email":"","affiliations":[],"preferred":false,"id":265554,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":61083,"text":"mf880G - 1978 - Mineralogical map showing the distribution and abundance of gold, scheelite, chalcopyrite, arsenopyrite, minium, and sapphire corundum in heavy-mineral concentrates in the Seward and Blying Sound quadrangles, Alaska","interactions":[],"lastModifiedDate":"2023-05-23T20:31:29.286231","indexId":"mf880G","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1978","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"880","chapter":"G","title":"Mineralogical map showing the distribution and abundance of gold, scheelite, chalcopyrite, arsenopyrite, minium, and sapphire corundum in heavy-mineral concentrates in the Seward and Blying Sound quadrangles, Alaska","docAbstract":"Reconnaissance geochemical and mineralogical sampling was done in the Seward and Blying Sound quadrangles during 1975 and 1976 as part of the Alaska Mineral Resources Assessment Program (AMRAP). These maps show the distribution and abundance of gold, scheelite, chalcopyrite, arsenopyrite, minium and sapphire corundum in heavy-mineral concentrates.
Heavy-mineral concentrate samples were collected at 525 sites from active channels and, locally, from the interface of streambeds with intermediate- to low-tide beaches. The heavy-mineral concentrates were obtained by panning stream sediments in the field to remove most of the light minerals. The panned samples were sieved though a 20-mesh (0.8 mm) screen in the laboratory, and the minus-20 mesh fraction was further separated with bromoform (specific gravity: 2.86) to remove any remaining light-mineral grains. Magnetite and other strongly magnetic heavy minerals were removed from the heavy-mineral fraction by using a hand magnet. The remaining sample was passed through a Frantz Isodynamic Separator1 and a nonmagnetic fraction was obtained at a setting of 0.6 amperes. A split of this nonmagnetic fraction was examined for its mineralogic content using a binocular microscope and X-ray diffraction. The nonmagnetic concentrates primarily contain muscovite, sphene, zircon, apatite, rutile, and anatase. Small amounts of other minerals such as gold, scheelite, minium, sapphire corundum, and most sulfides will also be found in this fraction.
1 The use of trade names is for descriptive purposes only and does not constitute endorsement of those products by the U.S. Geological Survey.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf880G","isbn":"0607803517","usgsCitation":"Tripp, R.B., and Crim, W., 1978, Mineralogical map showing the distribution and abundance of gold, scheelite, chalcopyrite, arsenopyrite, minium, and sapphire corundum in heavy-mineral concentrates in the Seward and Blying Sound quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 880, 2 Plates: 37.91 x 33.96 inches and 56.30 x 39.86 inches, https://doi.org/10.3133/mf880G.","productDescription":"2 Plates: 37.91 x 33.96 inches and 56.30 x 39.86 inches","costCenters":[],"links":[{"id":392192,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_4104.htm"},{"id":180378,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/0880-G/report-thumb.jpg"},{"id":417360,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0880-G/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":417359,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0880-G/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"250000","country":"United States","state":"Alaska","otherGeospatial":"Blying Sound Quadrangle, Seward Quadrangle","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -150,\n 59.5\n ],\n [\n -147,\n 59.5\n ],\n [\n -147,\n 61\n ],\n [\n -150,\n 61\n ],\n [\n -150,\n 59.5\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b05e4b07f02db699e5e","contributors":{"authors":[{"text":"Tripp, R. B.","contributorId":88707,"corporation":false,"usgs":true,"family":"Tripp","given":"R.","middleInitial":"B.","affiliations":[],"preferred":false,"id":264956,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Crim, W.D.","contributorId":8820,"corporation":false,"usgs":true,"family":"Crim","given":"W.D.","email":"","affiliations":[],"preferred":false,"id":264955,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":61264,"text":"mf900L - 1978 - Parallel-surface-continued aeromagnetic map of the San Lorenzo and Hillsboro quadrangles, Grant and Sierra counties, New Mexico","interactions":[],"lastModifiedDate":"2018-11-29T13:15:04","indexId":"mf900L","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1978","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"900","chapter":"L","title":"Parallel-surface-continued aeromagnetic map of the San Lorenzo and Hillsboro quadrangles, Grant and Sierra counties, New Mexico","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf900L","usgsCitation":"Wynn, J.C., 1978, Parallel-surface-continued aeromagnetic map of the San Lorenzo and Hillsboro quadrangles, Grant and Sierra counties, New Mexico: U.S. Geological Survey Miscellaneous Field Studies Map 900, 41.0 x 31.5 inches, https://doi.org/10.3133/mf900L.","productDescription":"41.0 x 31.5 inches","costCenters":[],"links":[{"id":180646,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":276318,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0900l/plate-1.pdf","text":"Plate","size":"33.50 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Plate"}],"country":"United States","state":"New Mexico","county":"Grant County, Sierra County","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -108,32.75 ], [ -108,33 ], [ -107.5,33 ], [ -107.5,32.75 ], [ -108,32.75 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae3e4b07f02db689342","contributors":{"authors":[{"text":"Wynn, J. 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Doroshin, a mining engineer employed by the Russian-American Company. He obtained a few ounces of gold from gravels from two streams that flow into the Kenai River below Kenai Lake (Moffit, 1906, p. 8). Placer gold was found on Palmer Creek near Hope in about 1888, and on several nearby creeks in 1894 and 1895, precipitating a rush of miners to the region in 1896 (Moffit, 1906, p. 8, 9, 33). Prospecting subsequently was carried on through the Seward and Blying Sound quadrangles, but production of placer gold was confined to the western part of the Seward quadrangle; hence, the map shows only the pertinent area of these quadrangles. Most of the gold was recovered from stream and bench gravels in the western part of the Turnagain Arm drainage system, the most productive gravels from Mills, Canyon, Bear, Resurrection, and Crow Creeks. Only a small amount of gold was recovered from gravels of the Kenai River drainage system, chiefly from Copper Creek, and almost no production was recorded from the Resurrection River or its tributaries. (Resurrection River and Resurrection Creek are two different streams.)
Recovery of the gold was effected initially with sluice boxes and later by hydraulic mining methods (Martin and others, 1915, p. 186). Dredges were installed on Resurrection and Sixmile Creeks but never were operated successfully because of many large boulders, thin gravel deposits, and low gold tenor (Paige and Knopf, 1907, p. 119-120; Brooks, 1916, p. 55; Tuck, 1933, p. 523-527). Dredging also proved unsuccessful on the Kenai River for the same reasons (Martin and others, 1915, p. 186-187).
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