 | | 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 |  | | 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) | | 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...subeconomic assemblage of pyrrhotite, chalcopyrite, sphalerite, cobaltite, and galena currently defined over...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 |  | | Journal (article/letter/editorial) | | group of deposits consist of Agbearing galena–sphalerite orebodies that also contain minor amounts of...Broken Hill deposit, particularly those rich in sphalerite, is the development of low interfacial angles...galena, chalcopyrite, and pyrrhotite against sphalerite. Galena forms 3/28/02, 16:18 4 THE CANADIAN... cuspate, low-angle interfaces against sphalerite–sphalerite boundaries (Fig. 2B), and locally occurs...occurs as isolated lozenges spread along sphalerite–sphalerite grain boundaries. The average interfacial angle |  | | 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) | | (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) | | 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...Palmeir6polis facilitated isotopic reequilibration. At Geco,the muchlargeralteration zonewasaneffectively closed |  | | 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) | | 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...vermicularintergrowtho{ pyrrhotite-chalcopyrite-sphalerite in more or less constantproportionsthroughoutthe...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 |  | | 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 |  | | 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 (article/letter/editorial) | | Geochemistry and Mineralogy of Solid Mine Waste: Essential Knowledge for Predicting Environmental Impact...Weathered Pb–Zn tailings from the Calumet Island mine, Québec DOI: 10.2113/gselements.7.6.381 geochemically...such as Cu, Zn, Cd, and Pb from sulfide KEYWORDS : mine tailings, secondary minerals, synchrotron microanalysis...waste rock that governs the chemical reactivity of mine wastes from produced is astounding: on a per capita...acid-generAmericans produce more than 10 times as much solid mine ating sulfide minerals (notably pyrite and pyrrhotite) |  | | 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 |  | | 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) | | 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) | | 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...massive sulphide (VMS) deposits at Manitouwadge, Ontario. Trace-element characteristics, particularly those...Archaean terranes. The Manitouwadge mining camp, Ontario, Canada represents one of the classic localities of |  | | Journal (article/letter/editorial) | | chief host of mercury in zinc concentrates is sphalerite, the mercury content of which varies depending...ZlNC SMELTERS release several hundred tons of Sphalerite and Common Sulfide Minerals 1 mercury into the...with low concentra tions of mercury. Mineral Sphalerite Wurzite Tetrahedrite Stibnite Pyrite Marcasite...1985). Zinc deposits with cinnabar therefore Sphalerite is the chief host for mercury in can be regarded...been synthesized at 250 to 280°C (Tauson and sphalerite also is documented for most mercury Abramovich |  | | 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 |  | | Journal (article/letter/editorial) | | David L. Huston & Jorge M. R. S. Relvas & J. Bruce Gemmell & Susan Drieberg Received: 24 April 2010 / Accepted:...Lisboa, Portugal e-mail: jrelvas@fc.ul.pt J. B. Gemmell ARC Centre for Excellence in Ore Deposits, University...are only available in the Paleoarchean Panorama district where coeval seawater-dominated and magmatic–hydrothermal...appear to have been physically separated. This district, which is characterised by chloritic and sericitic...1995; Yang and Scott 1996; Relvas et al. 2001; Gemmell et al. 2004). Like the controversy over adularia– |  | | Journal (article/letter/editorial) | | minerals including quartz, gahnite, sillimanite, sphalerite, pyrrhotine, pyrite, magnetite, and ilmenite...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...Ru rutile; Ser sericite; Sil sillimanite; Sp sphalerite; St staurolite; ZBpl zincian spinel; Zr zircon;...biotite, orthopyhroxene, apatite, sillimanite, sphalerite, pyrrhotine, pyrite, chalcopyrite and secondary |  | | Journal (article/letter/editorial) | | Departmentof Geology,Universityof Toronto,Toronto,Ontario, CanadaM5S 1A1 Abstract Zincianspinel [(Zn,Fe...Fe304 asa buffer.Calculatedpositionsof the spinel-sphalerite equilibriain fo•-J•-X space, foridealbehavior...sulfidedepositsis a productof desulfidationof sphalerite during metamorphism. (1) andthat involvingan...moremagnesium rich becausetheir iron component sphalerite and almandine react to form gahnite, reacts with...formby the following: AGø= -RT In K- [ZnS]in sphalerite 4-[FeS]in pyrrhotite + 2A12SiO5 + O2= [ZnA1204] |  | | Journal (article/letter/editorial) | | Kaolinitic Precursor: Evidence from the Geco Mine, Manitouwadge,Ontario R. L. STANTON Departmentof Geology...someof the gneisses of the Gecoorebody,Manitouwadge,Ontario. Theseare a colorlessto pale brown translucentmaterial...observed in drill core from the Geco mine, Manitouwadge, Ontario. The Geco Deposit The Gecoorebody,situatedin...situatedin the Manitouwadge area of Ontario just north of Lake Superior(Fig. 1) is now recognizedas a major...metavolcanicrockslocatednear the SILLIMANITE DERIVATION, GECO MINE, ONTARIO boundarybetween the Quetico and Abitibi-Wawa |  | | 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) | | affectedby additionalMn or Cd in the sphalerite. Applicationof the sphalerite rometerto the regionallymetamorphosed...geological compowith other,lessprecise, estimates. Sphalerite sitionsfrom metamorphosed Aphebianmassivesulfideores...sulfides,only molybdenite, pyrite, arsenopyrite, and sphalerite are sufficiently refractory to be considered...examinessome applicationsof the sphalerite geobarometerto metamorphism. The sphalerite geobarometer The theory...pyrrhotite composition is not important. The sphalerite * troilite * iron (or kamacite and taenite) assemblage |
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