 | | Journal (article/letter/editorial) | | Geochemical Features of Ore-Forming Fluids for Orogenic Gold Deposits Throughout Geological Time Vsevolod Yu...composition of ore-forming fluids from orogenic gold deposits formed during various geological epochs...fluids (their salinity and pressure) at orogenic gold deposits are demonstrated to systematically vary...median pressure 1680 bar) to younger (median salinity 3.6 wt.%, median pressure 1305 bar) deposits. The detected...some parameters of mineralizing fluids at orogenic gold deposits are principally new information. The parameters |  | | Report (issue) | | ,WPGCW #NCUMC Alaska Resource Data File Juneau quadrangle Descriptions of the mineral occurrences... o Distribution of mineral occurrences in the Juneau 1:250,000-scale quadrangle, Alaska This and related...authored by: John C. Barnett and Lance D. Miller Juneau, AK This report is preliminary and has not been...description and accuracy: This occurrence is on the east slope of Red Mountain at an elevation of about 1...1978 Reporter(s): J.C. Barnett and L.D. Miller (Juneau, Alaska ) Last report date: 12/15/01 Page 3 Alaska |  | | Journal (article/letter/editorial) | | Metamorphic fluids and gold G. NEIL PHILLIPS Key Centre In Economic Geology, Geology Department, James...James Cook University, Townsville, Qld. 4811, Australia Abstract Low-salinity fluids (T > 200 ~ reduced...CO2)and high geothermal gradients are common to many gold deposits and provinces. In contrast, host rocks...dramatically within single deposits or provinces. Gold deposits with co-product base metals are an exception...fluids. The low salinity fluids inferred for major gold-only deposits are not easily explained by seawater |  | | Journal (article/letter/editorial) | | Orogenesis, high-T thermal events, and gold vein formation within metamorphic rocks of the Alaskan Cordillera...Menlo Park, CA 94025, U.S.A. Abstract Mesothermal, gold-bearing quartz veins are widespread within allochthonous...southeastern Alaska; small and generally nonproductive gold-bearing veins occur upstream from major placer deposits...high-T tectonic deformation, igneous activity, and gold mineralization. Ore fluids were of consistently...reached at least 450-500 ~ before onset of significant gold-forming hydrothermal activity. Within interior and |  | | Report (issue) | | Survey REVISED GEOLOGICAL BIBLIOGRAPHY OF THE JUNEAU PROJECT AREA, ALASKA By Diane C. Nielsen, Susan L...USGS. Revised Geological Bibliography of the Juneau Project Area, Alaska by Diane C. Nielsen, Susan L....bibliography on the geology and related subjects in the Juneau area is an updated revision of the U.S. Geological...mineral-resource assessment program. The project area (fig. 1) includes the Juneau, Taku River, Atlin, and part...of the U.S.-Canadian International boundary near Juneau and Skagway, the Chilkat Range, the easternmost |  | Groves, D.I, Goldfarb, R.J, Gebre-Mariam, M, Hagemann, S.G, Robert, F (1998) Orogenic gold deposits: A proposed classification in the context of their crustal distribution and relationship to other gold deposit types. Ore Geology Reviews, 13 (1) 7-27 doi:10.1016/s0169-1368(97)00012-7 | Journal (article/letter/editorial) | | Ore Geology Reviews 13 Ž1998. 7–27 Orogenic gold deposits: A proposed classification in the context...their crustal distribution and relationship to other gold deposit types D.I. Groves a a,) , R.J. Goldfarb...Geophysics, UniÕersity of Western Australia, Nedlands, WA 6907, Australia b U.S. Geological SurÕey, Box...80225, USA c Wiluna Gold Mines Limited, 10 Ord St., West Perth, WA 6005, Australia d Geological SurÕey...March 1997 Abstract The so-called ‘mesothermal’ gold deposits are associated with regionally metamorphosed |  | JIA, YIEFEI, LI, XIA, KERRICH, ROBERT (2001) Stable Isotope (O, H, S, C, and N) Systematics of Quartz Vein
Systems in the Turbidite-Hosted Central and North Deborah Gold Deposits of
the Bendigo Gold Field, Central Victoria, Australia: Constraints on the Origin
of Ore-Forming Fluids. Economic Geology, 96 (4) 705-721 doi:10.2113/gsecongeo.96.4.705 | Journal (article/letter/editorial) | | and North Deborah Gold Deposits of the Bendigo Gold Field, Central Victoria, Australia: Constraints on...North Deborah gold deposits are located in one of 15 mining centers of the Bendigo gold field, central...Victoria, Australia, a major world-class gold province developed in a turbidite terrane. Gold mineralization...stages 1, 2, and 4 are gold-bearing, whereas stages 3, 5, and 6 are barren. Gold-related quartz veins were...inferred from fluid inclusions. The δ18O values of gold-bearing vein quartz and coexisting hydrothermal |  | | Journal (article/letter/editorial) | | P-T-t-deformation-fluid characteristics of lode gold deposits: evidence from alteration systematics T...accepted 8 April 1998 Abstract Structurally hosted lo& gold-bearing quartz vein systems in metamorphic terranes...the origin of the deposits. The majority of lode gold deposits formed proximal to regional translithospheric...intense in these flanking domains. The largest lode gold mining camps are in terranes at greenschist facies;...25 Richardson Street, West Beach, W.A. 6005, Australia. 0169-1368/98/$19.00 8 1998 Elsevier Science B |  | | Journal (article/letter/editorial) | | Orogenic gold: Common or evolving fluid and metal sources through time Richard J. Goldfarb...Goldfarb, Richard J., Groves, David I., Orogenic gold: Common or evolving fluid and metal sources through...journal pertain. ACCEPTED MANUSCRIPT OROGENIC GOLD: COMMON OR EVOLVING FLUID AND METAL SOURCES THROUGH...Sciences, University of Western d MA Australia, Crawley, Western Australia, Australia 60094 Orebusters...6149, Australia TE Abstract D *corresponding author: goldfarb@usgs.gov AC CE P Orogenic gold deposits |  | | Journal (article/letter/editorial) | | the formation of provinces hosting giant orogenic gold deposits Accepted: 19 December 2005 / Published...Springer-Verlag 2006 Abstract Ages of giant gold systems (>500 t gold) cluster within well-defined periods of...determine gold endowment of a province in an orogen. A critical factor for giant orogenic gold provinces...beneath a province at the time of gold mineralisation, as giant gold deposits are much more likely to...history such that thick SCLM was not developed before gold deposition. In constrast, orogens with protracted |  | | Book | | ge n Ra Glacier Bay Berners Bay map area Juneau it nt ou Admiralty Island s ain Sitka Alaska...drops moisture as rain or snow. Therefore, the western sides and tops of mountains are generally very...average of more than 200 inches (508 cm). The city of Juneau, on the mainland, is sheltered by several mountain...of large evergreen trees: Sitka spruce, western hemlock, western red cedar Lush estuarine meadow flanked...Icefield east of Petersburg feeds the LeConte Glacier, the Juneau Icefield northeast of Juneau feeds Mendenhall |  | Groves, David I, Goldfarb, Richard J, Knox-Robinson, Carl M, Ojala, Juhani, Gardoll, Stephen, Yun, Grace Y, Holyland, Peter (2000) Late-kinematic timing of orogenic gold deposits and significance for computer-based exploration techniques with emphasis on the Yilgarn Block, Western Australia. Ore Geology Reviews, 17 (1) 1-38 doi:10.1016/s0169-1368(00)00002-0 | Journal (article/letter/editorial) | | nlrlocateroregeorev Late-kinematic timing of orogenic gold deposits and significance for computer-based exploration...techniques with emphasis on the Yilgarn Block, Western Australia David I. Groves a,) , Richard J. Goldfarb...Geophysics, UniÕersity of Western Australia, Nedlands, Perth, W.A. 6907, Australia b United States Geological...W.A., Australia 6104. Received 4 August 1999; accepted 7 January 2000 Abstract Orogenic gold deposits...specifically emphasised in this study, orogenic gold deposits formed in the time interval between 40 |  | | Journal (article/letter/editorial) | | temperatures: evidence from the Granny Smith gold deposit, Western Australia V.J. Ojala, D.I. Groves, J.R. Ridley...Geophysics, The University of Western Australia, Nedlands WA 6009, Australia Received: 4 May 1994/Accepted:...constrain the origin of ore-forming fluids in lode gold deposits. The isotope composition of the ore fluid...typical temperatures of formation of mesothermal lode-gold deposits. One is derived from straight line extrapolations...determine ore fluid compositions in mesothermal gold deposits are quartz for 61so and sericite or muscovite |  | | Report (volume) | | SURVEY CHARLES D. WALCOTT, DIKECTOK THE JMEAU GOLD BELT, ALASKA BY ARTHUR C. SPENCER AND A RECONNAISSANCE...GOVERNMENT PRINTING 1906 OFFICE CONTENTS. THE JUNEAU GOLD BELT, ALASKA, BY ARTHUR C: SPENCER. Page Introduction............................... Topography of the Juneau belt....................................................................................... 6 Juneau map..........................................................................'.. Geology of the Juneau belt ......................................... |  | | Report (issue) | | greater use of power-driven machinery to recover the gold from Alaska's very large reserves of low-grade auriferous...possible only in easily accessible districts. Lode gold, copper, and coal can, of course, be profitably...between Cook Inlet on the east and Kuskokwim River on the west, in which copper, gold, and coal are reported...Mining began with the development of gold placers in 1880 in the Juneau district, where lode mining began...all been won incidentally to the exploitation of gold and copper deposits. Silver and lead have been recovered |  | | Journal (article/letter/editorial) | | Isotopic geochemistry of the Sawayaerdun orogenic-type gold deposit, Tianshan, northwest China: Implications...Tasmania, Private Bag 126, Hobart, Tasmania 7001, Australia Key Laboratory of Crust and Orogen Evolution,...April 2012 Editor: L. Reisberg Keywords: Orogenic gold deposit Tianshan Isotope geochemistry Fluid source...Fluid evolution a b s t r a c t The Sawayaerdun gold deposit is hosted by Carbonaceous metasediments...largest Muruntau-type gold deposit in the Chinese Tianshan metallogenic belt. Gold mineralization at Sawayaerdun |  | | Report (issue) | | acknowledgment should be made to the Territorial mine inspector and resident engineer of the Bureau of...also of the Bureau of Mines, for information about gold placers; to George Parks, now Governor of Alaska...to John C. McBride and the Alaska Juneau Gold Mining Co., of Juneau; Thomas Vogel, of Haines; J. H. Cann...$21,140,810 1891. 1, 014, 211 1910 ... 16,875,226 Gold... ............ ... ........ .......... $347, 240....... Tin............. ........................ Marble and other products (including lode platinum metals) |  | Groves, D. I., Goldfarb, R. J., Robert, F., Hart, C. J. R. (2003) Gold Deposits in Metamorphic Belts: Overview of Current Understanding,Outstanding Problems, Future Research, and Exploration Significance. Economic Geology, 98 (1) 1-29 doi:10.2113/gsecongeo.98.1.1 | Journal (article/letter/editorial) | | Economic Geology Vol. 98, 2003, pp. 1–29 Gold Deposits in Metamorphic Belts: Overview of Current Understanding...Geophysics, The University of Western Australia, Crawley, W.A., Australia 6009 RICHARD J. GOLDFARB, United...ROBERT, Barrick Gold of Australia Ltd., 10th Floor, 2 Mill St., Perth, W.A., Australia 6000 AND CRAIG...Geophysics, The University of Western Australia, Crawley, W.A., Australia 6009 Abstract Metamorphic belts...collision has added to, or thickened, continental crust. Gold-rich deposits can be formed at all stages of orogen |  | | Report (issue) | | advances, is now an established mining center. In the Juneau district considerable progress has been made, though...Cape Edward, on Chichagof Island, but no important mine improvements are to be noted in either the Wrangell...No. 284,1906, pp. 30-54. b Spencer, A. C.,The Juneau gold belt; Wright, C. W., A reconnaissance of Admiralty...The most extensive and productive area is the Juneau gold belt, which has been irregularly traced along...important deposits are quartz veins of free-milling gold ore. Several such veins in the Silver Bay'region |  | | Report (issue) | | Frontispiece. The Boundary Creek area of the Juneau gold mining district, a region of interest to both...Program 44 White Mountains National Recreation Area Project 44 Cooperative programs with the USSR Academy of...69 56 FIGURES Frontispiece. Photograph of Juneau gold mining district, area of interest to both Federal...and mine and deposit locations referred to in text 36 13-16. Photographs of: 13. Greens Creek mine adit...adit, Admiralty Island 37 14. Gold-bearing quartz vein, Kensington mine, southeast Alaska 38 15. Blasting |  | | Journal (article/letter/editorial) | | (Trinity Hall ) in 1968, worked for Consolidated Gold Fields Ltd, in Cornwall. After completing a Ph.D...in quartz vein and "albitite" intrusion areas per mine level suggest that the ore fluid and dyke magma...3 Ma andesitic/dacitic volcanism and the active east rift margin of the Taupo Volcanic Zone (e.g., Henley...Lode district, Nevada (1200' level, Con Virginia mine; O'Neil and Silberman, 1974), and the Emperor shoshonite...NR, Ngauruhoe; KT. Ketetahi BE/BI4", Broadlands East/Broadlands West: WI. White Island volcano: KA. Kawerau: |  | | Report (issue) | | Gold Deposits in Metamorphic Rocks-Part I U.S. GEOLOGICAL SURVEY BULLETIN 1857-D AVAILABILITY OF BOOKS...101 Twelfth Ave. Chapter D Gold Deposits in Metamorphic Rocks-Part I Gold in the United Verde Massive...DEWITI and JEROME WAEGLI The Alaska-Juneau and Treadwell Lode Gold Systems, Southeastern Alaska By THOMAS...GEOLOGICAL SURVEY BULLETIN 1857 GEOLOGY AND RESOURCES OF GOLD IN THE UNITED STATES DANIEL R. SHAWE and ROGER P...Cataloging-In-Publication Data Gold deposi~ in metamorphic rocks. (Geology and resources of gold in the United States) |  | | Report (issue) | | Photograph of organic-rich limestones in Kandik Basin, east-central Alaska 23 9. Map showing thermal maturity...metallic minerals (excluding uranium) in 1990, and mine and deposit locations 39 16. Status of USGS level...visit ophiolites in Koryak Mountains, Soviet Far East 45 19. Map showing locations ofUSBM mineral studies...21. Photograph of new adit for Kensington lode-gold mine on Lynn Canal 55 TABLES Fluctuation in price...Geological Survey Soviet All Union Institute of Gold and Rare Metals Research Contents IX CONTRIBUTORS |  | | Journal (article/letter/editorial) | | Metamorphic Origin of Ore-Forming Fluids for Orogenic Gold-Bearing Quartz Vein Systems in the North American...Australian National University, Canberra ACT 0200, Australia ROBERT KERRICH, Department of Geological Sciences...80225 Abstract The western North American Cordillera hosts a large number of gold-bearing quartz vein...δ15N values of 1 to 6 per mil. The δ18O values of gold-bearing vein quartz from different locations in...hydrothermal minerals indicate that the formation of these gold-bearing veins involved dilute, aqueous carbonic |  | | Report (issue) | | Geological Survey GEOLOGICAL BIBLIOGRAPHY OF THE JUNEAU PROJECT AREA, ALASKA By i Susan L. Douglass 1 and...California Deceased Geological Bibliography of the Juneau Project Area, Alaska Introduction This bibliography...bibliography on the geology and related subjects in the Juneau area was prepared as background for studies of the...mineral-resource assessment program. The project area (fig. 1) includes the Juneau, Taku River, Atlin, and part of...of the U.S.-Canadian International boundary near Juneau, the Chilkat Range, the easternmost portion of |
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