 | | Journal (article/letter/editorial) | | Press Ltd. 1985. Rinted in U.S.A. The Hemlo gold deposit, Ontario: A geochemical and isotopic study and...EION M.CAMERoN*.t *Geological Survey of Canada, Ottawa, Ontario Kl A OE8 **Department of Geology, University...University of Ottawa, Ottawa. Ontario KIN 6N5 tDerry Laboratory for Sedimentary Geochemistry and Ore Deposits...1985) Abstract-The Hemlo deposit, near Marathon, Ontario, is one of the largest gold deposits in North...other occurrences have since been found west of Hemlo. The mineralization is substantially enriched in |  | | Journal (article/letter/editorial) | | PROVINCE, CANADA EION M. CAMERON’s2 and KEIKO HATTORI2~3 ‘Geological Survey of Canada, Ottawa, Ont...Ont. KlA OE8 (Canada) ‘Derry Laboratory for Sedimentary Geochemistry and Ore Deposits, Ottawa, Ont. KIN...KIN 6N5 (Canada) 3Department of Geology, University of Ottawa, Ottawa, Ont. KIN 6N5 (Canada) (Accepted...isotopically fractionated sulphides in Superior Province, Canada. In: N. Clauer and S. Chaudhuri (Editors), Isotopes...30%0 associated with iron formation near Wawa, Ontario. This has caused some workers to propose an alternative |  | | Journal (article/letter/editorial) | | 1995 ) 455-488 The late Archean Hemlo gold deposit, Ontario, Canada: a review and synthesis Yuanming...Saskatoon, Sask. S7N 5E2, Canada Department of Earth Sciences, University of Western Ontario, London, Ont. N6A...5B7, Canada Received 18 March 1994; accepted 30 January 1995 Abstract The Hemlo gold deposit, northwestern...northwestern Ontario, Canada, is situated within the late Archean Hemlo--Heron Bay greenstone belt of the...central axis of the greenstone belt. The Hemlo gold deposit is located within the central metamorphic |  | | Journal (article/letter/editorial) | | geochemistry of vanadian silicates in the Hemlo gold deposit, Ontario, Canada Yuanming Pan and Michael E. Fleet...of Geology,Universityof Western Ontario, London,Ontario N6A 5B7, Canada, Received March 22, 1991/Accepted...present in green mica schist from the Hemlo gold deposit, Ontario, Canada. Vanadium-rich silicate minerals...talc and tremolite in other lithologies of the Hemlo deposit. The principal substitution that incorporates...Vanadium-enriched green mica schist from the Hemlo gold deposit is characterized by uniform Ti/Zr ratios |  | | Journal (article/letter/editorial) | | com/locate/oregeorev The Hemlo gold deposit, Ontario, Canada: principal deposit characteristics and constraints...Geology Section, Ontario Geological Survey, 933 Ramsey Lake Road, Sudbury, Ontario, Canada, P3E 6B5 Received...2002 Abstract The Archean, world-class, Hemlo lode gold deposit has been overprinted by deformation and...accounts for all of the characteristics of the deposit. Most proposed models are inappropriate in terms...ratios. The deposit is spatially associated with: highstrain zones; a restraining bend in the Hemlo greenstone |  | | Report (issue) | | Energy, Mines and Resources Canada E:nergie, Mines et Ressourees Canada Canada THE ENERGY OF OUR RESOURCES...POWER OF OUR IDEAS COVER Left: Amethyst - Thunder Bay, Ontario. Specimen measures 4.5 cm across the base...no. 17206. GSC 204971-1 Geological Survey of Canada Miscellaneous Report 49 ROCKS AND MINERALS FOR... © Minister of Supply and Services Canada 1991 Available in Canada through authorized bookstore agents...bookstores or by mail from Canada Communication Group - Publishing Ottawa, Canada KIA OS9 and from. Geological |  | | Journal (article/letter/editorial) | | 1104-1120 Calc-SilicateAlterationin the Hemlo Gold Deposit,Ontario:Mineral Assemblages, P-T-X Constraints...Department of Geology, University of Western Ontario,London,Ontario,CanadaN6A5B7 Abstract A late calc-silicate...alterationcharacterizes the ArcheanHemlogolddepositin Ontario, Canada.Calc-silicate minerals,includingepidote-clinozoisite...fluid within a dilatantregionalplanarstructure(the Hemlo shearzone).A direct association of nativegoldgrainswith...Hemlodeposit. Introduction GeologicSetting The Hemlo gold depositis locatedapproximately MOSTArcheangolddepositsare |  | | Journal (article/letter/editorial) | | Metamorphism of Hydrothermal Alteration at the Hemlo Gold Deposit, Ontario MARTIN HEILIGMANN, ANTHONY E. WILLIAMS-JONES...Street, Montreal, Quebec, Canada H3A 2A7 Abstract The Hemlo Au (-Mo) deposit is an example of atypical...north-central Ontario. The ore is shear hosted and consists primarily of disseminated native gold in several...amphibole was present prior to alteration and that gold mineralization occurred at pressure-temperature...primarily to the very high fS2 during alteration and gold mineralization, which caused iron to partition preferentially |  | | Journal (article/letter/editorial) | | EconomicGeology Vol. 82, 1987, pp. 1177-1191 Archean Gold Mineralization and Oxidized Hydrothermal Fluids*...Fluids* EION M. CAMERON Geological Surveyof Canada,Ottawa,Ontario,CanadaKiA OE8and Derry Laboratory,Ottawa-Carleton...Ottawa-Carleton Geoscience Centre, Ottawa, Ontario, Canada, KiN 6N5 AND I(EIKO HATrORI Departmentof Geology...Laboratory,Ottawa-CarletonGeoscience Centre, Ottawa, Ontario, Canaada KiN 6N5 Abstract Sulfateminerals,hematite...Macassa, Lake Shore,andRosswhichare all in Ontario,Canada,andKalgoorliein Australia.Examples of lesserdepositsare |  | | Report (issue) | | Ontario Geological Survey Open File Report 6000 Summary of Field Work and Other Activities 1999 1999...1999 ONTARIO GEOLOGICAL SURVEY Open File Report 6000 Summary of Field Work and Other Activities 1999...Subprovince, northwestern Ontario; in Summary of Field Work and Other Activities 1999, Ontario Geological Survey...Printer for Ontario, 1999 © Queen’s Printer for Ontario, 1999. Open File Reports of the Ontario Geological...at the regional Mines and Minerals office whose district includes the area covered by the report (see below) |  | | Journal (article/letter/editorial) | | Ore-forming Fluid and Formation Conditions of BIF-hosted Gold Mineralization in the Archean Amalia Greenstone...Ore-forming Fluid and Formation Conditions of BIF-hosted Gold Mineralization in the Archean Amalia Greenstone...Ore-forming Fluid and Formation Conditions of BIF-hosted Gold Mineralization in the Archean Amalia Greenstone...isotope studies on the Amalia gold deposit 1 Abstract: Orogenic gold mineralization in the Amalia Greenstone...from quartz-carbonate samples associated with the gold mineralization were studied in order to obtain information |  | 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...Denver, CO 80225-0046 FRANÇOIS ROBERT, Barrick Gold of Australia Ltd., 10th Floor, 2 Mill St., Perth...Geology Program, Box 2703 (K-10) Whitehorse, Yukon, Canada Y1A 2C6 and Centre for Global Metallogeny, Department...collision has added to, or thickened, continental crust. Gold-rich deposits can be formed at all stages of orogen...that evolving metamorphic belts contain diverse gold deposit types that may be juxtaposed or overprint each |  | | Journal (article/letter/editorial) | | gypsum barite anhydrite anhydrite gypsum anhydrite anhydrite anhydrite gypsum anhydrite 0. 706510 0... +--14 +_ 13 +9 + 14 _+ 15 anhydrite gypsum anhydrite gypsum anhydrite gypsum gypsum gypsum 0.704845_+...Springs Formation, Australia (850 Ma). Gypsum and anhydrite samples ( D D H Alice Springs No. 3, Amadeus basin)...14 and 0.706126_+ 15. Redstone River Formation, Canada (750 Ma). Gypsum samples (PPRG Nos. 16621665, 1740-1750..._+9. Hiittenberg Formation, Namibia (680 Ma). Anhydrite from this unit (T7, Tsumeb area) shows a sulfur |  | | Journal (article/letter/editorial) | | Sulfide and Silicate Anatexis in the Balmat Zinc Deposit (New York, USA) and its Implications for Ore Remobilization...Sulfide and Silicate Anatexis in the Balmat Zinc Deposit (New York, USA) and its Implications for Ore Remobilization... Sulfide and Silicate Anatexis in the Balmat Zinc Deposit (New York, USA) and its Implications for Ore Remobilization...bodies of the Balmat, NY massive sulfide zinc deposit that underwent remobilization during upper amphibolite...carbonate-hosted Balmat sedimentary exhalative Zn deposit of the Adirondack Lowlands of New York State (Fig |  | | Journal (article/letter/editorial) | | 720-756 Magmatism,Metamorphismand Deformation at Hemlo, Ontario, and the Timingof Au-Mo Mineralizationin the...developedin the ArchcanHemlo gold-molybdenumdeposit hostedwithin the Hemlo-HeronBay greenstonebelt in northwesternOntario...alteration,anda varietyof other minerals. The Hemlo areahasbeen intrudedby quartz-feldsparporphyries(the... K, Sb,As,Hg, T1,Ba,V, tion of the ArcheanHemlo gold-molybdenumde- and B and are depleted in Na, Ca,... and Mn positin northwesternOntario,Canada.The Hemlo (Kuhns,1986). Hg-, As-,andSb-bearingmineralsocdepositcontainsan |  | | Journal (article/letter/editorial) | | Sanukitoid Gold Porphyry Deposits: A New Understanding and Genetic Model from the Lac Bachelor Gold Deposit...Deposit, Abitibi, Canada Noémie Fayol1,† and Michel Jébrak1 1 Département des Sciences de la Terre et de... QC H3C 3P8, Canada Abstract In the Abitibi subprovince of the Superior craton, Canada, recognition...recognition of intrusion-related gold deposits is improving, but their formation remains poorly understood. The...The recently reopened Lac Bachelor deposit in the northeastern part of the Abitibi subprovince is located |  | | Journal (article/letter/editorial) | | is associated with Carlin-type gold deposits, distributed in Carlin gold deposits in Nevada, the USA, and...and Lanmuchang Hg-Tl-Au deposit in Guizhou Province, China. The second type is associated with As and...Zn-Pb mineralization, such as in Lanping Zn-Pb deposit. Thallium mineralization in the deposits is formed...River in Australia, and Bathurst Mining Camp in Canada) [25–28] where pyrite is the most important ore...environments and countries (Figure 1). Carlin-type gold deposit, characterized by Au–Tl–As–Hg–Sb geochemical |  | Ronacher, Elisabeth, Richards, Jeremy, Villeneuve, Michael, Johnston, Michael (2002) Short life-span of the ore-forming system at the Porgera gold deposit, Papua New Guinea: laser 40 Ar/ 39 Ar dates for roscoelite, biotite, and hornblende. Mineralium Deposita, 37 (1) 75-86 doi:10.1007/s00126-001-0231-x | Journal (article/letter/editorial) | | life-span of the ore-forming system at the Porgera gold deposit, Papua New Guinea: laser 40Ar/39Ar dates for... Springer-Verlag 2001 Abstract The Porgera gold deposit, Papua New Guinea, is associated with sodic-alkalic...University of Alberta, Edmonton, Alberta T6G 2E3, Canada E-mail: elisabeth.ronacher@ualberta.ca Fax: +1-780-4922030...Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada M.D. Johnston Porgera...Keywords Gold Æ Laser Porgera Æ Roscoelite 40 Ar/39Ar dating Æ Introduction The Porgera gold mine is |  | Scharrer, Manuel, Sandritter, Katharina, Walter, Benjamin F., Neumann, Udo, Markl, Gregor (2020) Formation of native arsenic in hydrothermal base metal deposits and related supergene U6+ enrichment: The Michael vein near Lahr, SW Germany. American Mineralogist, 105 (5). 727-744 doi:10.2138/am-2020-7062 | Journal (article/letter/editorial) | | of arsenic in a specific enrichment zone (i.e., deposit, placer, weathering crust) can be highly variable...mineralized hydrothermal veins in the Schwarzwald mining district between Karlsruhe and Basel. These veins consist...combustion Metamorphosed Hemlo Au-deposit, Canada Nat. As, Rg, Orp – Au deposit Active geothermal Uzon...2010 Nat. As Disseminated ore in Bernic lake, Canada Nat. Bi, Gn, Nat. As, stibarsen – <300 pegmatites...Asp → Nat. As – Fluid cooling 150–300 0–5 magmatic gold deposits Baogutu, China (after Py formation) Polymetallic |  | | Report (issue) | | the literature to test the validity of a single deposit classification for all stratiform barite deposits...distributions of average grade and tonnage within a given deposit type (Menzie and Singer, 1980). Preliminary work...located in North America; 27 deposits are listed in Canada (largely British Columbia and the Yukon Territory)...Bobija and Pljevlja and the Canadian Muncho Lake deposit are included in the tables because grade or tonnage...if the Muncho Lake deposit (British Columbia, Canada) is actually a separate deposit or if it is composed |  | | Journal (article/letter/editorial) | | Trade name for a semi-translucent light blue-grey anhydrite, marketed as a gem material. Aravaipaite. A. R...190.40 ~ y 1.694. Named for the Aravaipa mining district in which the mine is located. Arupite. V. F. Buchwald...blue rosettes on a uraninite matrix in the Cu-Co deposit of East Kamoto, southern Shaba, Zaire. Ideal formula...beige-coloured mineral from the Bayan Obo Fe Nb--rare-earth deposit, Inner Mongolia, China. Formula Ba3(Nd,Ce)2(CO3)5F2...northern Kazakhstan, USSR. 1deal compothe Kombat deposit. sition Bi2Te4Oal. Monoclinic, space group P21 |  | | Report (issue) | | Geological Survey of Canada Miscellaneous Report 57 Cobalt – Belleterre – Timmins Ontario and Quebec Ann...Ann P. Sabina 2000 Geological Survey of Canada Miscellaneous Report 57 ROCKS AND MINERALS FOR THE COLLECTOR...Timmins Ontario and Quebec Ann P. Sabina 2000 ©Her Majesty the Queen in Right of Canada, 2000 Catalogue...Available in Canada from Geological Survey of Canada offices: 601 Booth Street Ottawa, Ontario K1A 0E8 3303-33rd...101-605 Robson Street Vancouver, B.C. V6B 5J3 A deposit copy of this publication is also available for |  | | Journal (article/letter/editorial) | | and 3.5 wt.% SO3 from the Mushugai-Khuduk REE deposit, southern Mongolia, has been experimentally metasomatized...areas and hosts large fluid inclusions containing anhydrite as the solid phase. Dark areas show moderate depletion...Cl and OH. The formation of large, fluid and anhydrite-filled inclusions associated with the LREE-enriched...provided the Ca and S needed for the formation of anhydrite as well as the P and LREE required for the enrichment...associated D. E. HARLOV ETAL. southern Mongolia. The deposit is associated with late-Mesozoic volcanic, subvolcanic |  | | Report (issue) | | Geological Survey of Canada Miscellaneous Report 48 Ottawa to North Bay and Huntsville, Ontario; Gatineau (Hull)...Natural Resources Canada Ressources naturelles Canada Geological Survey of Canada Miscellaneous Report...MINERALS FOR THE COLLECTOR: Ottawa to North Bay and Huntsville, Ontario; Gatineau (Hull) to Waltham and Témiscaming...Queen in Right of Canada 2007 Catalogue No. M41-8/48E ISBN 0-660-19556-9 Available in Canada from the Geological...Geological Survey of Canada Bookstore (see inside front cover for details) A copy of this publication is |  | Farquhar, J., Wu, N., Canfield, D. E., Oduro, H. (2010) Connections between Sulfur Cycle Evolution, Sulfur Isotopes, Sediments, and Base Metal Sulfide Deposits. Economic Geology, 105 (3) 509-533 doi:10.2113/gsecongeo.105.3.509 | Journal (article/letter/editorial) | | are also thought to be analogs for ancient VMS deposit formation. These deposits generally grade from...for precipitation of sulfate minerals, such as anhydrite that precipitates by retrograde solubility along...paths that progress up-temperature. Much of the anhydrite is not preserved in older deposits because it...type of sedimentary rock-hosted sulfide-bearing deposit that forms when metal and sulfide-bearing fluids...a 0361-0128/98/000/000-00 $6.00 strata-bound deposit. Synsedimentary features are preserved in some |
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