 | | Journal (article/letter/editorial) | | Orogenic Gold-Bearing Quartz Vein Systems in the North American Cordillera: Constraints from a Reconnaissance...964, Denver, Colorado 80225 Abstract The western North American Cordillera hosts a large number of gold-bearing...counterparts in British Columbia and southeastern Alaska, to the Klondike district in central Yukon. These...subduction of terranes along the continental margin of North America. Mineralization ages span mid-Jurassic to...values of â120 to â130 per mil for a hydrous muscovite from the Sheba vein in the Klondike district reflect |  | | Journal (article/letter/editorial) | | files THEMED ISSUE: Geologic Evolution of the Alaska Range and Environs A river runs through it both...ways across time: 40Ar/39Ar detrital and bedrock muscovite geochronology constraints on the Neogene paleodrainage...paleodrainage history of the Nenana River system, Alaska Range Jeff A. Benowitz1, Kailyn Davis1, and Sarah...Geochronology Laboratory, University of AlaskaâFairbanks, Fairbanks, Alaska 99775, USA Earth and Planetary Sciences...University of CaliforniaâDavis, Davis, California 95616, USA 2 CORRESPONDENCE: jbenowitz@alaska.edu CITATION: |  | | Report (issue) | | The Alaska Mineral Resource Assessment Program Background Information to Accompany Mineral-Resource and...Maps of the Anchorage Quadrangle, South-Central Alaska V .U.S. GEOLOGICAL SURVEY CIRCULAR 1094 Cover...G.K. Gilbert and other members of the Harriman Alaska Expedition after they had named many of the surrounding...geographic dictionary of Alaska. Photograph by G.R. Winkler, July 14, 1983. The Alaska Mineral Resource Assessment...Maps of the Anchorage Quadrangle, South-Central Alaska By D.J. MADDEN-McGUIRE and G.R. WINKLER U.S. GEOLOGICAL |  | | Report (issue) | | The Alaska Mineral Resource Assessment Program: Background Information to Accompany Folio of Geologic...Resource Maps of the Circle Quadrangle, Alaska The Alaska Mineral Resource Assessment Program: Background...Mineral Resource Maps of the Circle Quadrangle, Alaska By H.l. Foster, W.O. Menzie, J.W. Cady, S.l. Simpson...of Congress Cataloging-in-Publication Data The Alaska Mineral Resources Assessment Program: Background...Mineral Resource Maps of the Circle Quadrangle, Alaska. U.S. Geological Survey Circular 986 Bibliography: |  | | Report (issue) | | VICINITY KANTISMA DISTRICT, ALASKA BY FRANCIS G. WELLS Investigations in Alaska Railroad belt, 1931 (Pages...__..______..-_._____-____.._-_._______. Quartz-muscovite schist____-___...__.-__-_._..______-__-_ Character...and Silver Wire._________________________________ North Star___-_-_--_--_-___-_--_--___-----_-__--.._-_...FIGURE 1. Index map showing areas investigated in Alaska Railroad belt, 1931--_---_------------------------------------viz... INVESTIGATIONS IN ALASKA KAILROAD BELT, 1931 FOREWORD By PHILIP S. SMITH To help the mining industry of Alaska and |  | | Book (volume) | | .............................................1 Alaska ............................................................................................346 North Carolina ....................................................................................356 North Dakota ........................................................................................4 Alaska County and Stream Map ................................................45 Arizona â Yuma Co. Hull Mine Site Map ...................................... |  | | Report (issue) | | deposit. Table 4, part B, gives an alphabetic list of mine and properties followed by the deposit name. CHARACTERISTICS...of deposits used in Table 1 may represent a major mine, district name, or local town name or other prominent... Pyrrhotite appears to be been reported in just a single mine in the East Belt of the Sierra Nevada foothills...(Malcolm, 1912), galena was widely considered by mine operators to be correlated with better gold grades...was described in a carbonate quartz veinlet in one mine in the Mother Lode system (Knopf, 1929). Method |  | | Report (issue) | | The United States Geological Survey in Alaska: Accomplishments During 1976 Kathleen M. Blean, Editor................... 1 Preliminary geologic map of Alaska, by Helen M. Beikman ................................................... 1 Mineral resources of Alaska, by Edward H. Cobb ..............................water quality in three streams along the trans-Alaska pipeline, by J. W. Nauman, C. E. Sloan, and D....enhancement studies: Limnological studies in southeastern Alaska and water quality measurements along the TAPS route |  | | Book (volume) | | .............................................1 Alaska.............................................................................................295 North Carolina ....................................................................................302 North Dakota ...........................................Not a county in Alabama but a tradition of a âlead Mineâ worked by Indians.) PELL CITY, NE 3 mi., area quarriesâŻblack...Louisville and Nashville RR), area pegmatite outcropsâŻMuscovite mica; d SE Region: (a) B.T. Childers prospect |  | | Book (volume) | | .............................................1 Alaska.............................................................................................295 North Carolina ....................................................................................302 North Dakota ...........................................Not a county in Alabama but a tradition of a âlead Mineâ worked by Indians.) PELL CITY, NE 3 mi., area quarriesâŻblack...Louisville and Nashville RR), area pegmatite outcropsâŻMuscovite mica; d SE Region: (a) B.T. Childers prospect |  | | Journal (article/letter/editorial) | | matrix, was recently found in the vicinity of the Gem Mine (benitoite locality), San Benito County, Calif....for triboluminescent sphalerite is a lead-silver mine in the Silverton district, San Juan County, Colo...been found in a milky quartz vein about V2 mile north of the bridge (Judd's Bridge), 175 feet above the...locality, a pit about 20 feet in diameter, is 300 feet north of ROCKS AND MINERALS the power line which here...Valley View copper mine, So. Skull Canyon near Winsper, Clark County, Idaho. This mine is operated by G |  | | Journal (article/letter/editorial) | | Federal Centre Box 25046 (MS964), Denver, Colorado, USA 80225 Received on June 1, 2004; accepted on September...suites and belts are defined across Alaska and Yukon, in the northern North American Cordillera, on the basis...intrusion-related gold deposit model. Keywords: Alaska, Yukon, granite, redox, Cretaceous, magnetic susceptibility...BELT KALTAG Richardson area VF L EL W RE FA Alaska Range DE NA L 35 I n g ell 0 AR km L P M RF SU...Fig. 1 Generalized tectonic elements in Yukon and Alaska with significant faults, features and locations |  | | Report (issue) | | lodes, but it soon subsided. The Big Hurrah quartz mine is the only lode-gold producer that was opened up...up on any considerable scale, and this mine was operated only from 1903 to 1908 and then not continuously...underground work has been done at the Lost River tin mine, the Kougarok silver-lead property, and the gold...deposits, Alaska: U. S. Geol. Survey Bull. (in preparation). 163 164 MINERAL RESOURCES OF ALASKA, 1920...Preliminary report on the Cape Nome gold region, Alaska, with maps and illustrations, by F. C. Schrader |  | | Journal (article/letter/editorial) | | of Geology and Geophysics, University of Alaska, Fairbanks, AK 99775 (U.S.A.) (Accepted for publication...compositions associated with the various skarn types in Alaska (Fig. 1) show characteristic but overlapping fields...researcher at Stanford for two years, then moved to Fairbanks. His research interests are in skarn deposit geology...of Alaska. Present address: Department of Geology and Geophysics, University of Alaska, Fairbanks, AK...State University, and then joined the University of Alaska. His research interests include petrology and geology |  | | Report (volume) | | SMITH, Director Bulletin 649 ANTIMONY DEPOSITS OF ALASKA BY ALFRED H. BROOKS WASHINGTON GOVERNMENT PRINTING.............................. 1............... Fairbanks district. .......................................................................... Fredericks mine.......................................... Spaulding...Mining Co ................................ Newsboy mine............................................. Mother......... Tolovana mine............................................ Rhoads & Hall mine................. |  | Paulsen, T.S., EncarnaciĂłn, J., Grunow, A.M., Layer, P.W., Watkeys, M. (2007) New age constraints for a short pulse in Ross orogen deformation triggered by EastâWest Gondwana suturing. Gondwana Research, 12 (4) 417-427 doi:10.1016/j.gr.2007.05.011 | Journal (article/letter/editorial) | | Wisconsin Oshkosh, 800 Algoma Blvd., Oshkosh, WI 54901, USA Department of Earth and Atmospheric Sciences, St...Lindell Blvd., O'Neil Hall 205, St. Louis, MO 63108, USA c Byrd Polar Research Center, The Ohio State University...43210, USA d Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK 99775, USA e University...HRS: Holyoake Range South; HRN: Holyoake Range North; LEG: Leverett Glacier; LG: Lowry Glacier; MU: Mount...3 Ma based on 40Arâ39Ar analysis of detrital muscovite extracted from sandstones of the unit and older |  | | Book | | 61 232 PART The Making 43 II 5 7 3 III Mine PART 267 IV Glossary 279 Bibliography 291...minerals which make lovely cabinet specimens. old mine western states, to kick up and oxidation, ...abandoned cially in the dumps not unusual for mine dumps, espe- a solid gold or silver nugget, simply...glossary and Part III is devoted to a section on small-mine development. The proper use of a geologic map...for profitable hunting or for developing your own mine are as great as ever. America needs strategic minerals |  | | Report (issue) | | ATWOOD, W. W., Mineral resources of southwestern Alaska [gold and copper]: Bull. 379, pp. 147-152, 1909...' Geology and mineral resources of parts of the Alaska Peninsula [gold and copper]: Bull. 467, pp. 125-131... 480, pp. 43-93, 1911. The mineral deposits of Alaska and the Alaskan mining industry in 1913: Bull....placer district, Alaska: Bull. 592, pp. 309-320, 1914. Gold, silver, and copper in Alaska in 1913 (mines...region [Alaska]: Bull. 480, pp. 218-235, 1911. . CHAPIN, THEODORE, The McKinley Lake district [Alaska]: Bull |  | Rimando, Jeremy, Peace, Alexander L., Geng, Meixia, Verbaas, Jacob, Slade, Harley (2022) Structural Setting of the Sixtymile Gold District, Yukon, Canada: Insights into Regional Deformation and Mineralization from Field Mapping and 3D Magnetic Inversion. Minerals, 12 (3) 291 doi:10.3390/min12030291 | Journal (article/letter/editorial) | | Dawson City and ~10 km east of the border with Alaska, USA (Figure 1). Since the late 19th century, it has...al.,al., 2013) [8].[8]. Inset Figure the Alaska-Yukon Alaska-Yukonregion region(modified (modifiedafter...The study area (red box) is located close to the AlaskaâYukon border and lies within an area interpreted...Gold Belt that spans more than 1000 km along the North American Cordillera (Figure 1). The Tintina Gold...Yukon Geological Survey (2020) [23] as mostly muscovite and/or chlorite quartz phyllite and quartzites |  | | Journal (issue) | | Acanthite with silver, 2.6 cm, from the Uchucchacua mine, Peru; Allan Young collection and photo. Amethyst...that is, the states of Oregon, Washington, Idaho, Alaska and the Canadian Provinces of British Columbia...California, and some of them ultimately migrated north. In 1858, when gold was discovered along the Fraser...Yukon, and in 1899 more gold was found around Nome, Alaska, drawing away many of the Yukon prospectors. All...garnet crystals in dark gray schist from Wrangell, Alaska (first located in 1881) began to turn up in the |  | | Journal (article/letter/editorial) | | of an ancient continental margin, east-central Alaska C. D U S E L - B A C O N , ' V. L. HANSEN' A N...94025, USA 'Department of Geological Sciences, Southern Methodist University, Dallas, TX 75275, USA ABSTRACT...comprise two adjacent terranes in east-central Alaska. These terranes differ in protoliths, structural...cooling ages. A structurally complex zone of gently north-dipping tectonites separates the two terranes. The...continental margin and granitoid belt built on North American crust. Metamorphic cooling ages from the |  | | Report (volume) | | EECONNAISSANCE OF A PART OF THE EAMPART QUADRANGLE ALASKA BY HENRY M. EAKIN WASHINGTON GOVERNMENT PRINTING...pocket. V. A, Close folding in limestone on spur north of Ruby Creek; B, Massive deposit of silt' at the...been prepared, and reports on the Fortymile and Fairbanks quadrangles have been issued.1 These are reconnaissance...The Fortymile quadrangle, Yukon-Tanana region, Alaska: Bull. U. S. Geol. Survey No. 375, 1909. Prindle...reconnaissance of the Fairbanks quadrangle, Alaska, with a detailed description of the Fairbanks district by L |  | | Journal (issue) | | ct. 125.00 STAR SAPPH. Fine big spread. 33.9 ct. . 240.00 10 STAR SAPPHIRE blue Rood star appr. 3.5 cts...Speaking 3 T5I California Convention 4 Yogo Sapphire Mine Reopened 4 Alpha Counters 5 Berkeley Cass iter ite...States. YOGO SAPPHIRE MINE REOPENED A REOPEN INC OF THE FAMED YOGO~ 'SAPP H I RE MINE, IN THE LITTLE BELT...scheduled TO BEGIN THIS MONTH, UNDER NEW OPERATORS. THE MINE HAS BEEN IDLE SINCE 1929, AFTER HAVING PRODUCED...Mountains The Yogo mine has the distinction of being the only lode vein SAPPHIRE MINE IN THE WORLD, SINCE |  | | Report (issue) | | INVESTIGATIONS IN THE ALASKA RAILROAD BELT, 1931 BY S. R. CAPPS Mineral resources of Alaska, 1931 (Pages 119-135)...132 133 ILLUSTRATION PLATE. 1. Index map of the Alaska Railroad region showing location of areas in which...made____----____-_-___ 120 MINERAL INVESTIGATIONS IN THE ALASKA RAILROAD BELT, 1931 By S. R. CAPPS PURPOSE OF THE...appropriation was made by the United States Congress to the Alaska Railroad for the purpose of carrying out an intensive...purpose for which this appropriation was made, the Alaska Railroad called upon the Geological Survey, which |  | | Report (volume) | | In addition to these, a useful time scale for North American mammalian stages is given by: (B) Evernden...dates and the Cenozoic mammalian chronology of North America: Amer. Jour. Sci., v. 262, p. 145-l98. ÂŁ/From...Correlation chart for the Carboniferous of north-west Europe, Russin, and North America: Geol. Soc. London, 196411... and Kopf, Rudolph W., 1957, Geologic names of North America introduced in 1936-1955: U.S. Geol. Survey...Carter County. Adams Formation ADMS01 1. Holocene 2. Alaska (SE) 3. McKenzie, G. D., 1970, Ohio State Univ |
|
