 | | Report (issue) | | GOVERN YOUR USE OF THIS DOCUMENT Your use of this Ontario Geological Survey document (the “Content”) is governed... copyright is held by the Queen’s Printer for Ontario. It is recommended that reference to the Content... . ; Ontario Geological Survey, ...670-5691 Toll Free: 1-888-415-9845, ext. 5691 (inside Canada, United States) Local: (705) 670-5691 Toll Free:...(inside Canada, United States) Local: (416) 326-2678 Toll Free: 1-800-668-9938 (inside Canada, United |  | | Journal (issue) | | Rocks and Minerals of Ontario -- H f ONTARIO DEPARTMENT OF MINES AND NORTHERN AFFAIRS Honourable...and Minerals of Ontario By D. F. HEWITT Chief, Industrial Mineral Section Ontario Department of Mines...Early Precambrian pillow lavas; Munekun Lake, District of Kenora. (Courtesy L. D. Ayres). Lower right:... (Courtesy The International Nickel Company of Canada, Limited). Centre left: Eurypterus lacustris, an...about 400 m.y. ago; Welland County. (Courtesy Shell Canada Ltd.). right: left: — — — Centre right: Archaeocrinus |  | | Journal (article/letter/editorial) | | Volcanogenic Massive Sulfide Occurrence, Marathon, Ontario, Canada* MARC RINNE1,†,** AND PETE HOLLINGS1 1 Department...Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada Abstract The Big Lake volcanogenic...metamorphosed to chlorite, actinolite, hornblende, biotite-phlogopite, and anthophyllite) are located 5 to...from the Big Lake VMS occurrence near Marathon, Ontario (Fig. 1). The data are used to describe the conditions...province, Canada (Fig. 1A). The study area is approximately 30 km southeast of Marathon, Ontario, with access |  | | 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) | | SuperiorProvince,Ontario EVA ZALESKI Continental Geoscience Division,Geological Surveyof Canada,Ottawa,Ontario,CanadaKiA...synvolcanic alteration(Schandl the Winston Lake Zn-Cu mine near Schreiber(Schandlet et al., 1991; Davis et...metasedimentary-migmatitic Queticosubprovince (Fig. The Geco mine, which dosed in November 1995, was the 1). Despiteits...wasundertaken by Pye (1957)for the Ontario Historical nomenclature--the "mine series" Department of Mines.He...sector geologists whohaveadopted thehistorical "mine rocksalongtheinnerandoutermargins of thefoldedsupra- |  | | Journal (article/letter/editorial) | | University of Toronto, 22 Russell Street, Toronto, Ontario, Canada M5S 3B1 Abstract Hydrothermal monazite is...most notably in quartz, feldspars, and igneous biotite, hydrothermal monazite commonly occurs as inclusions...light tan or nil when included in chlorite or biotite. In the latter however, the color is often overshadowed...upper amphibolite-grade rocks (Winston Lake and Geco VMS deposits), whereas the others are from lower...pleochroic halos are generally well defined in biotite (Fig. 1e, h), they are weaker and more diffuse |  | | Journal (article/letter/editorial) | | HighlyMetamorphosed Volcanogenie Massive SulfideDeposits: Geco,Canada,andPalmeir6polis, Brazil SYLVIAM. AK•uJO*, STEVEND...University of Toronto, 22 Russell Street,Toronto, Ontario,CanadaM5S3B1 ANDFREDJ. LONGSTAFFE Department of...University of Western Ontario,Biological andGeological Building, London, Ontario,CanadaN6A5B7 Abstract...Abstract ThelargeGeco,Canada, andsmallPalmeir6polis, Brazil,Precambrian metamorphosed volcanogenie massivesulfide...zones formed mainly byanthophyllite-cordierite-biotite rocks. Theserocks areinterpreted tobebasalts thathadundergone |  | | Journal (article/letter/editorial) | | Example from the GecoMine, ManitouwadgeDistrict, Ontario, Canada ERICH U. PETERSEN Departmentof Geologyand...massive sulfidedeposits arethe majorsource of tin in Canada(e.g.,KiddCreekandSullivan;Mulligan, 1975). Tin... Gecovolcanogenic massive sulfidedeposit.The Geco mine is well suitedfor a studyof massivesulfide-related...abundances in various rock typesassociated with the Geco massivesulfide ores and reported that cassiteriteis...occurrenceand origin of tin in the Geco deposit. GeologicSetting Regionaland district geology The Manitouwadgeminingdistrict |  | | Journal (article/letter/editorial) | | volcanogenic massive sulphide camp: Manitouwadge, Ontario, Canada Yuanming Pan a, M i c h a e l E. Fleet b ... Sask. STN OWO, Canada bDepartment of Earth Sciences, University of Western Ontario, London, Ont. N6A...N6A 5BZ Canada Received 12 April 1994; revised version accepted 20 February 1995 Abstract Cordierite-orthoamphibole...Cordierite-orthoamphibole gneiss, amphibolites, quartz-biotite schist and calc-silicate rocks occur in spatial...massive sulphide (VMS) deposits at Manitouwadge, Ontario. Trace-element characteristics, particularly those |  | | Journal (article/letter/editorial) | | Department of Geology, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario, Canada M5S 2C6 Received November...Kidd Creek, Geco and Winston Lake massive sulfide deposits, in the Superior Province of Ontario, shows that...years after volcanism. Monazite from Kidd Creek mine is 2659 __ 3 Ma old, in agreement with spatially...__ 25 Ma old rutile. Monazite from a biotite schist at Geco mine gives a similar age of 2661 _+ ! Ma....from a sericite schist, which hosts the ore at Geco mine, is 2675 _+ 2 Ma old. Abraded large monazite grains |  | | Journal (article/letter/editorial) | | Kaolinitic Precursor: Evidence from the Geco Mine, Manitouwadge,Ontario R. L. STANTON Departmentof Geology...Manitouwadge,Ontario. Theseare a colorlessto pale brown translucentmaterial occurringin biotite, dark brown...kaolinizationof biotite, thus accountingfor the common intergrowthof sillimaniteand biotite in metamorphicrocks...s. Introduction intergrowthsof sillimanitein biotite may represent the metamorphismof partly weathe...hasbeensuggested that at least ized--detrital biotite; the common sericitization of somemetamorphicmineralsmay |  | | Report (volume) | | quadrangle in northern Minnesota and southern Ontario has been studied in cooperation with the Minnesota...international border separating Minnesota and Ontario and lies within the southern part of the Archean...greenschistfacies metamorphism; the Vermilion district is located within this subprovince, southeast...at an elevation of 150m above the surface. In Ontario, data were taken from northsouth surveys flown...elevation of about 300m by the Geological Survey of Canada. In the southwestern part of the area, data were |  | | Journal (article/letter/editorial) | | IncipientMeltingof SulfidesAlonga Dike Contact,Geco Mine, Manitouwadge,Ontario ASOKEMOOKHERJEEAND N. K. DUTTA Abstract...diabasedike {rom the massive sulfide wall at the Geco mine, display the {oilowing unusual {eatures: (i) extremely...1967), at the Horne and the Normetal mines Noranda District (Brown 1948), and at Zawar mines India (Mookherjee...Fellowshipat the University of Western Ontario, London, Canada. Subsequentlaboratorystudieswere madeby... K. D.). GeologicalSetting The Geco ore body in Manitouwadge,Ontario, is situated within Precambrian |  | | Journal (article/letter/editorial) | | Clay-Chlorite Precursor: Evidencefrom the Geco Mine, Manitouwadge,Ontario R. L. STANTON Del•artmentof Geologyand...hasbeen observedin drill core from the Geco mine, Manitouwadge,Ontario. Detailed electronmicroprobeanalysisshowsthe...it is suggestedhere that, at least in the caseof Geco, it representsan earlier formedsubstance fromwh...mineralogyof the stratiform Gecodepositat Manitouwadge, Ontario,hasrevealed a creamyyellowto palepinknear-isotropic...establishment fides. to the cordierite associated with the Geco sul- of thisprincipleandin indicatingthe natureof |  | | Journal (article/letter/editorial) | | Sciences, University of Saskatchewan, Saskatoon, Canada SK S7N 5E2 Abstract Platinum group elements (PGE)...the Cu-Zn-Au-Ag deposits of Manitouwadge, Ontario, Canada; and the Cu-Zn-Co deposits of Outokumpu, Finland)...1997), one sample from the Geco Cu-Zn-Ag deposit of Manitouwadge, Ontario, Canada (Pan and Fleet, 1995; Zaleski...from the Cu-Zn-Ag deposits of Manitouwadge, Ontario, Canada; and 5 from the Cu-Zn-Co deposits of Outokumpu...little deformed kuroko deposits of the Hokuroku district (~140 Mt ore at 1.5% Cu, 3% Zn, and 1% Pb) are |  | | Journal (article/letter/editorial) | | (Stillwdl and Edwards 1956), the Coeur D'Alene district, Idaho (Sorensen 1951), the H o m e (Price 1934;...Normetal (Brown 1948) mines, Quebec, and the Zawar mine (Mookherjee 1964b), India. Members of the so-called...strata-bound massive sulphide orebodies in many mines in Ontario and N. W. Quebec. Pre-ore age of such intrusives...particularly emphasized, have been reported from the Magma mine, Arizona (Peterson 1962; Sell 1960; Short 1943)...Diabase-massive sulphide age relationship at the t-Iorne mine, Noranda, P. Q., is longstanding and well-known |  | | Journal (article/letter/editorial) | | 000. Milne,V.G., 1974,Mapledoram-Gemmell, ThunderBay'district;Ontario Divisionof Mines,Map 2280,scale1:12...Ontario:Preliminary results: Cannitouwadge, Ontario,Canada: Precambrian Research, v. 74,p. 73-89. adaGeological...Geology oftheManitomvadge greenstone belt,Ontario: Canada ouwadge greenstone belt andthe Wawa-Quetico...scale1:25,000. Superior province, northwestern Ontario: Canada Geological Survey Curß1995,Depositional setting...andageconstraints greenstone belt,northwestern Ontario: Canada Geological Survey Current of MinesAnnualReport66 |  | | Journal (article/letter/editorial) | | the Manitouwadge MiningCamp,Superior Province, Canada: A PotentialExploration Tool? EVA S. SCHANDL, MICHAEL...University of Toronto, 22 Russell Street,Toronto, Ontario,CanadaM5S3B1 AND HARDOLPH A. WASTENEYS Department... RoyalOntarioMuseum, 100 Queen's Park,Toronto,Ontario,CanadaM5S3C6 Abstract Traceandrareearthelement(REE)...units:maficvolcanic rocks,acidvolcanic tuffs,anddacites. The Geco,Willroy,Willecho,andBigNamaCreekCu-Zn-Agdeposits...wasobserved in the fblsicvolcanic rocksaroundthe Geco, Willroy,andWillechodeposits. Thepositive correlation |  | Beaudoin, G., Mercier-Langevin, P., Dube, B., Taylor, B. E. (2014) Low-Temperature Alteration at the World-Class LaRonde Penna Archean Au-Rich Volcanogenic Massive Sulfide Deposit, Abitibi Subprovince, Quebec, Canada: Evidence from Whole-Rock Oxygen Isotopes. Economic Geology, 109 (1) 167-182 doi:10.2113/econgeo.109.1.167 | Journal (article/letter/editorial) | | Massive Sulfide Deposit, Abitibi Subprovince, Quebec, Canada: Evidence from Whole-Rock Oxygen Isotopes* Georges...Québec, QC, Canada G1V 0A6 2 Geological Survey of Canada, 490 de la Couronne, Québec, QC, Canada G1K 9A9...9A9 3 Geological Survey of Canada, 601 Booth Street, Ottawa, ON, Canada K1A 0E8 Abstract The oxygen isotope...from that of the other VMS deposits of their host district, and a number of them are hosted by transitional...Georges.Beaudoin@ggl.ulaval.ca *Geological Survey of Canada contribution 20110346. 0361-0128/14/4184/167-16 |  | | Journal (issue) | | New York Articles Amethyst from the Thunder Bay region, Ontario .......................................Donald Elliott at the Diamond Willow mine near Thunder Bay, Ontario. Photo by Harold and Erica Van Pelt...Leicestershire LE7 7Qb Canada: Mrs. J. W. Peat 36 Deepwood Crescent Don Mills, Ontario M3C 1N8 South Africa:...Rubellite Tourmaline on Albite from the Itatiaia mine, Minas Gerais, Brazil. The Rubellite crystal measures...from the Thunder Bay Region, Ontario by Donald G. Elliott P.O. Box 253 Thunder Bay, Ontario P7C 4V8 Canada |  | | Journal (article/letter/editorial) | | 1985. Rinted in U.S.A. The Hemlo gold deposit, Ontario: A geochemical and isotopic study and K.mKo HATTORI**...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 America...INTRODUCTION THE HEMLO GOLD DEPOSIT near Marathon, Ontario was discovered in 198 1, although there is a long |  | | Journal (article/letter/editorial) | | Garnet-Stilpnomelane Rocks at Redstone, Timmins, Ontario D. J. ROBINSON Westmin ResourcesLimited, 25 Adelaide...Adelaide Street East, Suite 1400, Toronto, Ontario M5C 1Y2, Canada Abstract Silicatefaciesiron-formation...Fe + Mg. Stilpnomelane, amphibole, chlorite,and biotite eachhave elevatedMnO contentsbut do not displayany...with the KRISEL automationsys- matrix. Chlorite, biotite, quartz, albite, calcite,epitem and usingappro...inclusionsin Mn garnet and at the University of Western Ontario. Trace in theserocksvariessystematically with the |  | | Journal (article/letter/editorial) | | Universityof Toronto,22 RussellStreet,Toronto,Ontario, CanadaM5S 3B1 Introduction ___ 8 Ma (Smithet...abundanceof monazite and xenotime in sericite-biotite alterationzonearoundtheKiddCreek, the chlorite...at Kidd Creek is accomWinston Lake, Mattabi, and Geco massivesulfidedepaniedby significantREE enrichmentin...phosphates forpreviously documented REEmobility biotite alterationzoneat the WinstonLake deposit at massive...sulfides(Campbellet al., 1984)is evident and in the biotite alteration zone at Geco has been fromtheextremeREEenrichment |  | | Journal (article/letter/editorial) | | M562 Geco, Ontario Ph, Crd, St, Zgpl, Gd, Crn, Ru, Py, Ccp, Zr, HSg, Nig M6522 Geco, Ontario Ph,...M1772 Geco, Ontario Ph, Crd, St, ZSpl, Gd, Mag, llm, Py, Po, Ccp, Zr, H~g PGS-IO01 Geco, Ontario Crd...amounts; + mineral is secondary; Ap apatite; gt biotite; Ccp chaleopyrite; Chl chlorite; Crd cordierite;...of garnet, magnetite, zincian spinel, quartz, biotite, orthopyhroxene, apatite, sillimanite, sphalerite... la). However, it also occurs in contact with biotite and quartz and as inclusions in magnetite (Fig |  | | Journal (article/letter/editorial) | | Universityof Alberta, Edmonton,Alberta T6G 2E3, Canada Abstract Calibratedequilibriaare presentedwhichdocumentthe...MBgGraphite _ / / f• Fe-Mg Silicates at Geco, near Manitouwadge,Ontario (Petersen, 1984). The roles of temperature...garnets)valuesof Femeters. bcaring silicatessuch as biotite, garnet, chlorite, staurolite, and amphibole steadily...whicharehighin Mg. town, Tennessee,the Xv• of biotite in the country Consequently, it is essentialto...using 0.3 (Nesbitt, 1982). This decreasein Xveof biotite is cordieritcasan indicatorof hydrothermalalteration |
|
