 | | 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 |  | | 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...clinopyroxene,phlogopite,talc, chlorite, calcite, dolomite,microcline,tourmaline,and quartz are abundantin...fluid within a dilatantregionalplanarstructure(the Hemlo shearzone).A direct association of nativegoldgrainswith |  | | Report (issue) | | baumhauerite-2a, other lead sulfarsenides, realgar, pyrite, dolomite (Binntal, Distribution: In the Lengenbach quarry... Italy. In Canada, at Madoc, and in the Hemlo gold deposit, Thunder Bay district, Ontario. From Sterling |  | | Journal (article/letter/editorial) | | December 2014 GOLD IN THE CANADIAN SHIELD DAVID K. JOYCE Box 95551 Newmarket, Ontario Canada L3Y 8J8 dkjoyce@bellnet...dkjoyce@bellnet.ca Figure 1. Hollinger mine, Timmins, Ontario. This mine was often confused with the famous Dome...underlying the central and northern portion of Canada. For the most part, the Shield is a geologically...that has helped shape the character and economy of Canada for the past approximately 150 years. It has only...1823, 313 million troy ounces of gold have been recovered in Canada, much of it from the Canadian Shield |  | | Journal (article/letter/editorial) | | volcaniclastic breccia complex, northwestern Ontario, Canada Received: 10 January 2005 / Accepted: 6 June...solid solutions. The carbonate vein consists of dolomite-ankerite and calcite with accessory zircon, xenotime...Lakehed University, 955 Oliver Road, Thunder Bay, Ontario, CANADA P7B 5E1 E-mail: rmitchel@lakeheadu.ca...approximately 25 km northwest of the town of Marathon (Ontario), 1 km from the western margin of the Coldwell...volcaniclastic breccias that have been identified in the area (Gold Range, Slate Island, Neys, and McKellar Creek breccias) |  | | 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...alteration mineral assemblages consist of ferroan dolomite-ankerite minerals, siderite, chlorite, hematite |  | | Journal (article/letter/editorial) | | DOI 10.1007/s00126-013-0466-3 ARTICLE Multistage gold mineralization at the Lapa mine, Abitibi Subprovince:...Springer-Verlag Berlin Heidelberg 2013 Abstract The Lapa gold deposit contains reserves of 2.4 Mt at 6.5 g/t Au and...Subprovince from the Pontiac Subprovince to the south. Gold mineralization is predominantly hosted in highly... and native gold disseminated in biotite- and carbonate-altered wall rocks. Native gold, which is also...also present in quartz ± dolomite–calcite veinlets, is locally associated with Sb-bearing minerals, especially |  | | Journal (article/letter/editorial) | | Noranda, Quebec.Their high gold content and coregionality with greenstone-hosted gold lodes in many Canadian...both time and spaceof the three Precambriantypes of gold depositsreveals someinteresting,enigmatic,and unexplainedfeatures...and alsoto two still younger Phanerozoictypes of gold ores, sediment-hosted or Carlin-type and epithermal-typedeposits...repeatedlithologicassociations The world's oldest gold depositsare the many include pillowed, variolitic...body" at the Kerr-Addison mine in Kirkland Lake, Ontario (Bakeret al., 1957; Kishida, 1984), at Passagemde |  | | Journal (article/letter/editorial) | | the postdepositional the WitwatersrandBasalreef gold placer--a discussion: ECOmetamorphosed aluminous...VEIN DEPOSITS IN THE ABITIBI GREENSTONE BELT, CANADA:4øAr/39Ar EVIDENCEFOR A 70- TO 100-M.Y.-TIMEGAP...They endorsedthe conceptthat the introductionof gold was dated by variousisotopicsystemsat 2630 to 2579...accretion ofsubprovinces (tectonostratigraphic terranes) gold-mineralizing respanning2720 to 2670 Ma, marking...crosscutting dikes(e.g.,Corfuand "early gold"versus"late gold" models.The present Andrews, 1987). In marked |  | Giuliani, G., Ohnenstetter, D., Palhol, F., Feneyrol, J., Boutroy, E., De Boissezon, H., Lhomme, T. (2008) KARELIANITE AND VANADIAN PHLOGOPITE FROM THE MERELANI HILLS GEM ZOISITE DEPOSITS, TANZANIA. The Canadian Mineralogist, 46 (5) 1183-1194 doi:10.3749/canmin.46.5.1183 | Journal (article/letter/editorial) | | the metamorphic and hydrothermal stages of the deposit is compared with other vanadiumenriched lithologies...whereas Malisa & Muhongo (1990) proposed that the deposit is formed during hydrothermal circulation of fluids...karelianite was first described in the Outokumpu district of Finnish Karelia, in a large volcanogenic Cyprus-type...Pb–Zn–(Ag) sedimentary-exhalative Rampura Agucha deposit in Rajasthan, India (Höller & Stumpfl 1995), and...& Lin 1984), as well as in the Hemlo mesothermal gold deposit in Canada (Harris 1989). There is a continuous |  | | Journal (article/letter/editorial) | | multi-process genetic hypothesis for greenstonehosted gold lodes R.W. Hutchinson Department of Geology and...multi-process genetic hypothesis for greenstone-hosted gold lodes. In: S.J. Haynes (Editor), Vein-type Ore Deposits...the geology and geochemistry of greenstone-hosted gold lodes have emerged during the worldwide, intensive...reduced conditions of Archean time. They leached gold, silica, carbonate and other components of the ores...This accounts for the widespread low, but anomalous gold content of Algoma type iron-formations and for the |  | Hazen, R. M., Golden, J., Downs, R. T., Hystad, G., Grew, E. S., Azzolini, D., Sverjensky, D. A. (2012) Mercury (Hg) mineral evolution: A mineralogical record of supercontinent assembly, changing ocean geochemistry, and the emerging terrestrial biosphere. American Mineralogist, 97 (7) 1013-1042 doi:10.2138/am.2012.3922 | Journal (article/letter/editorial) | | (Rytuba 2005). The world’s largest Hg deposit, the Almadén district of central Spain, is representative...reworking of the mercury-hosting rocks of the Almadén district (primary mineralization 427–380 Ma) led to at...well as in amalgams with copper, lead, silver, and gold (e.g., Chen et al. 1985). Mercury mineral age and...west-central California. This important mining district, including the New Almadén mine in Santa Clara... and at Serra Pelada (Serra Leste) Au-(Pd-Pt) deposit, Pará, Brazil (Bindi 2010). However, we have not |  | Vakh, A. S., Avchenko, O. V., Goryachev, N. A., Gvozdev, V. I., Karabtsev, A. A., Vakh, E. A. (2017) Minerals of the Bournonite–Seligmannite Series in Ore of the Beresitovoe Deposit, Upper Amur Region, Russia. Geology of Ore Deposits, 59 (8) 738-744 doi:10.1134/s1075701517080104 | Journal (article/letter/editorial) | | Bournonite–Seligmannite Series in Ore of the Beresitovoe Deposit, Upper Amur Region, Russia A. S. Vakha, b, *, O...ite series of minerals in gold-bearing veinlets of the Beresitovoe deposit located in the eastern part...bournonite–seligmannite series, gold mineralization, ore metamorphism, Beresitovoe deposit, Upper Amur region DOI:...the first time in ore of the Beresitovoe gold–base-metal deposit situated in the eastern part of the Mongolia–...Mongolia– Okhotsk Orogenic Belt. The deposit is localized in Paleozoic granite of the Khaikta–Orogzhan |  | | Journal (article/letter/editorial) | | Reaction relationships in the Bayan Obo Fe-REE-Nb deposit Inner Mongolia, China: implications for the relative...range of settings from the Bayan Obo Fe-REE-Nb deposit, Inner Mongolia, China, indicate reaction between...bastnaÈsite [(REE)(CO3)F] and apatite. Within dolomite marble-hosted ores monazite grains occur surrounded...intergrown bastnaÈsite and apatite. In ¯uoritised dolomite marble-hosted amphibole-calcite veins, co-existing...at dierent periods in the development of the deposit. Introduction A large body of recent research |  | Biagioni, Cristian, Bonaccorsi, Elena, Moëlo, Yves, Orlandi, Paolo (2014) Mercury-arsenic sulfosalts from Apuan Alps (Tuscany, Italy) I. Routhierite, (Cu0.8Ag0.2)Hg2Tl(As1.4Sb0.6)Σ=2S6, from Monte Arsiccio mine: occurrence and crystal structure. European Journal of Mineralogy, 26 (1) 163-170 doi:10.1127/0935-1221/2013/0025-2320 | Journal (article/letter/editorial) | | 1974); it was also found at the Hemlo gold deposit, Ontario, Canada (Harris, 1989), and at Vorontsovskoye...described only from its type locality, the Lengenbach deposit, Binntal, Switzerland (Graeser et al., 1995). ...formation, at the bottom of the Monte Arsiccio deposit. Routhierite occurs within two different occurrences:...(ii) as euhedral crystals in quartz þ baryte þ dolomite veins, in association with boscardinite, protochabournéite...dolostone. Abbreviations: Brt ¼ baryte; Dol ¼ dolomite; Pc ¼ protochabournéite; Py ¼ pyrite; Rou ¼ routhierite; |  | | Journal (article/letter/editorial) | | Saskatchewan, 114 Science Place, Saskatoon, SK, Canada S7N 5E2 Received 26 April 2000; received in revised...Neoarchean terranes in the Superior Province of Canada, and the Norseman terrane, Western Australia. The...oxygen isotope compositions of hydrothermal ferroan dolomite and calcite show systematic depletions with increasing...Letters 184 (2000) 211^224 complexes, locally contain gold, and occur in accretionary belts of Neoarchean to...Archean age include the Abitibi greenstone belt in Canada, the Norseman^Wiluna greenstone belt of Western |  | 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 |  | | Journal (article/letter/editorial) | | METAMORPHIC COMMUNICATIONS ORIGIN OF DISSEMINATED GOLD MINERALIZATION IN GRENVILLE GNEISSESAT CALUMET...1987). SimilarepigeGeologyof the Calumet Deposit netic gold depositsoccur in younger orogenicbelts althoughthey...datedat about schist-amphibolite (e.g.,Red Lake, Ontario)environ- 1.1 Ga (e.g., Moore, 1986). Calumetis...explorationin 1986 to 1987. terranesincludingthoseat Hemlo, Ontario;Big Bell, Studiesof the surfaceandundergroundgeologyof...Moorhouse, depositsthere is controversyas to whether gold in- 1941; Osborne,1944; Sangster,1967) showedthat |  | | Journal (article/letter/editorial) | | Toronto, 22 Russell St., Toronto, Ont, .~15S 3B 1, Canada (Received May 14, 1991; revised version accepted...element occurrence in Archean Au-quartz vein, Archean Hemlo-type, epithermal Au-Ag and Au skarn systems which...27 elements occur in more than seven often ore deposit subdivisions: Au, Ag, Fe, Cu, Pb, Zn, Hg, Mo, Sb...occur enriched in Archean Au-quartz vein, Archean Hemlo-typc, epithermal Au-Ag and Au skarn deposits. However...is proposed that Archean Au-quartz vein, Archean Hemlo-type, epithermal Au-Ag and Au skarn ore fluids derive |  | | Journal (article/letter/editorial) | | Sn-BEARING SKARN, TUYA RANGE, NORTHERN BRITISH COLUMBIA, CANADA EMILY D. SCRIBNER§ AND LEE A. GROAT Department...Columbia, Vancouver, British Columbia V6T 1Z4, Canada JAN CEMPÍREK Department of Geological Sciences...determined to be: (1) Al þ Si metasomatism of dolomite-bearing limestone to a grossular-diopside-vesuvianite...world, such as the Bol’shoi Kan’on deposit in the Seimchan district in Russia (Aleksandrov & Troneva 2007)...2007), the Jenjialong deposit in China (Chen et al. 1992), the El Hammam deposit in Morocco (Sonnet & |  | Reznitsky, L. Z., Sklyarov, E. V., Suvorova, L. F., Barash, I. G., Karmanov, N. S. (2017) V–Cr–Nb–W-Bearing Rutile in Metamorphic Rocks of the Slyudyanka Complex, Southern Baikal Region. Geology of Ore Deposits, 59 (8) 707-719 doi:10.1134/s1075701517080086 | Journal (article/letter/editorial) | | The latter are metamorphic analogs of siliceous–dolomite sediments. Predominant varieties in this group...rutile from the rocks at gold deposits, in particular, at the Hemlo deposit, Canada, the V2O3 content reaches...gneiss with V mineralization (schreyerite), Kwale District, Kenya V2O3 Reference 0.07–0.08 1.67–1.79...phlogopite, garnet, tourmaline, chlorite), Hemlo gold district, Canada 1.54–2.04 '' Pan, Fleet, 1991 N.d...(spinel, escolaite, schreyerite), Rampura Pb–Zn deposit, Agucha, India 0.27–0.43 2.23–2.61 Quartzite |  | | 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) | | Printed in Austria Evolution of gold mineralization in the Ashanti Gold Belt, Ghana: evidence from carbonate...Earth Sciences, University of Western Ontario, London, Ontario, Canada With 6 Figures Received April 19,...Bogosu and Prestea mining districts of the Ashanti Gold Belt, Ghana. The compositions of coexisting ankerite-siderite...composition of fluids in the Bogosu-Prestea mesothermal gold system. Temperatures derived from the ankerite-siderite...are generally consistent with those from calcite-dolomite, arsenopyrite, carbon and oxygen stable isotope |
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