Gold mineralization in the Atikokan area

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Mots clés : Gold deposits;Gold mineralization;Atikokan area;Wabigoon subprovince;Quetico subprovince
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Publication: CIM Bulletin
Auteur(s): K.L MCDONALD, W.K. SMITH, W.A. CROSBY
Mots clés: Dragline operations, Controlled blasting, Presplitting, Strip mining, Throw blasting, Rietspruit.
Numéro: 851
Volume: 76
Année: 1983
Texte
Publication: CIM Bulletin
Auteur(s): ROGER M. NENDICK
Numéro: 851
Volume: 76
Année: 1983
Texte
Sommaire: During early 1980, pre-production work commenced at the "Les Mines Gallen" project, north of Noranda, Quebec. Asa result of the acid mine water associated with this property, a major pre-production phase included the installation of a water treatment plant to render the water environmentally suitable.
This paper emphasizes the planning, installation and operational factors of the treatment plant necessary to the success of the mining operations and the maintaining of a clean...
Publication: CIM Bulletin
Auteur(s): N. LECUYER
Mots clés: Underground mining, Les Mines Gallen, Water treatment, Noranda Mines, Environmental control, Acid mine water.
Numéro: 851
Volume: 76
Année: 1983
Texte
Sommaire: Factors affecting the extraction of gold are of a mineralogical nature. Knowledge of the mineralogy of the ore or metallurgical product to be treated, if appropriately combined with the metallurgical testwork, may improve gold recoveries.
This paper outlines the mineralogical techniques for the study of gold ores and metallurgical products and describes the gold mineralogy in relation to its metallurgy. An effective plan for studying refractory and other difficult ores, combining metallurgica...
Publication: CIM Bulletin
Auteur(s): CLAUDIA GASPARRINI
Mots clés: Gold, Gold mineralogy, Metal extraction, Electron microprobe, Gold-bearing minerals, Gold recovery.
Numéro: 851
Volume: 76
Année: 1983
Texte
Sommaire: Recent amendments to the so-called "flow-through share" rules in our income tax legislation have given a new lease on life to this once popular investment vehicle. The original "Dome funds" for exploration in the Beaufort sea recognized the usefulness of flow-through share arrangements, but, by and large, flow-through shares have until recently not been able to compete effectively with other tax shelter instruments—mainly, limited partnership interests.
This month,...
Publication: CIM Bulletin
Auteur(s): ROBERT B. PARSONS
Numéro: 851
Volume: 76
Année: 1983
Texte
Sommaire: Traditionally, batch bench-scale flotation tests have been used for evaluating flotation reagents by comparing the results of tests done with various additions of the reagent in question. Usually, comparisons are made of the concentrate grade and recovery or some figure of merit involving an empirical combination of both. In some cases, statistical methods have been used to make the comparison and even to identify optimal combinations of reagents. None of the preceding technology utilizes the...
Publication: CIM Bulletin
Auteur(s): G.E. AGAR, J.J. BARRETT
Mots clés: Mineral processing, Flotation tests, Flotation reagents Sulphide-rock separation, Scheelite-calcite separation, Batch flotation tests.
Numéro: 851
Volume: 76
Année: 1983
Texte
Sommaire: Syncrude's overburden removal requirement ranges from 20 million to 30 million bank cubic metres per year to meet tar-sand demands for the production of 129,000 barrels of synthetic crude oil per day. The economic tar-sand lies beneath a variable thickness of overburden materials, composed of silts, clays, some sands of lacustrine origin, wind-deposited sand dunes, and out-wash sands and gravels.
For the removal of overburden, Syncrude commissioned its own mobile equipment fleet in January...
Publication: CIM Bulletin
Auteur(s): J.E.C. CARTER, Y.P. MALHOTRA
Mots clés: Open-pit mining, Syncrude Canada Ltd., Overburden removal, Syncrude Process, Waste disposal, Equipment maintenance, Training.
Numéro: 851
Volume: 76
Année: 1983
Texte
Sommaire: The Lamaque Mine is located in Val d'Or, Quebec; host rocks belong to the Upper Malartic Group (andesites and pyroclastites). Intrusive rocks occur in two manners: small plugs (150 m D) and dykes (ca. 10 m thick). The small plugs contain:1 - diorites and tonalites (Main, East and West plugs) of calc-alkaline derivation: Zr 140ppm, Sr 761 ppm, P2O5 0.31% and (La/Sm)n3.0;2 - diorite (plug no 4) of tholeiitic derivation: Zr 32 ppm, Sr 181 ppm, P2OS 0.27% and (La/Sm)n 1.5.The diorite in plug no....
Publication: CIM Bulletin
Auteur(s): REAL DAIGNEAULT, GUY PERRAULT, PAUL BEDARD
Mots clés: Géologie régionale, veines, minéralisation aufrière, observation géochimique, intrusifs, cheminées, migration, halos endogènes d'or
Numéro: 851
Volume: 76
Année: 1983
Texte
Sommaire: The Aldermac deposit and associated prospects occur in the Noranda Archean volcanic centre of the Abitibi greenstone belt. Over two million tons of ore grading 1.65% copper, with minor gold and silver, were mined between 1933 and 1943. The deposit has features in common with the Vauze and Millen-bach mines in the same district.
Recent detailed mapping, geochemistry and petrography combined with data from former diamond drilling and mining operations permit a re-interpretation of the Aldermac...
Publication: CIM Bulletin
Auteur(s): A.D. HUNTER, J.M. MOORE
Mots clés: Geology, Ore deposit, Aldermac Deposit, Massive sulphides, Abitibi greenstone belt, MacKay Lake zone, Chance showing, North Chance, North Chance tuff, Archibald Prospect.
Numéro: 851
Volume: 76
Année: 1983
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