Geochemical methods for the discovery of blind mineral deposits

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Mots clés : Exploration;Geochemical exploration;Mineral deposits;Blind mineral deposits;Metallogenic provinces;Lithochemical methods;Enveloping halos;Leakage halos;Carbonatites;Pegmatites;Skarn;Hornfels;Vein deposits;Massive sulphides;Carbonate-hosted deposits
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Publication: CIM Bulletin
Auteur(s): G. SPERLINS
Numéro: 844
Volume: 75
Année: 1982
Texte
Publication: CIM Bulletin
Auteur(s): P.E. WEIDMARK
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: Considering the traumatic events of Canadian mining taxation of the 1970s, one wonders at the sanity of anybody who tries to predict what the 1980s might hold for the tax structure of the mining industry. Yet, the author agreed to tackle this task when called upon to do so at the annual meeting of the Quebec Metal Mining Association in June. The text of this "daring" speech follows.
Publication: CIM Bulletin
Auteur(s): ROBERT B. PARSONS
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: Most of the aggregate used in Nova Scotia is produced from numerous gla-ciofluvial and ice-contact deposits scattered throughout the province. Production from bedrock sources is increasing, with most of the coarse aggregate used in the Halifax-Dartmouth area coming from quarries operating within the metro area.A recently completed provincial sand and gravel inventory mapping program has identified some "resource-poor" areas where comprehensive aggregate evaluation programs are...
Publication: CIM Bulletin
Auteur(s): JOHN H. FOWLER
Mots clés: Aggregates, Nova Scotia, Sand, Gravel, Stone, Industrial minerals, Glaciation, Quarries.
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: The fire resistance of several mine conveyor belts is evaluated using a new belt-flammability apparatus developed by the U.S. Bureau of Mines. The test apparatus, experimental details and a calculated flammability index (FI) are described.The FI values are useful for ranking the fire resistance of mine conveyor belts. Values are determined using parameters readily measured with thermocouples, high-temperature flow probes and a methane-oxygen torch, all of which are components of the Bureau's...
Publication: CIM Bulletin
Auteur(s): N. BERKOWITZ
Mots clés: Coal, Thermal coal, Metallurgical coal, Alberta, Energy resources, Synfuels.
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: The fire resistance of several mine conveyor belts is evaluated using a new belt-flammability apparatus developed by the U.S. Bureau of Mines. The test apparatus, experimental details and a calculated flammability index (FI) are described.The FI values are useful for ranking the fire resistance of mine conveyor belts. Values are determined using parameters readily measured with thermocouples, high-temperature flow probes and a methane-oxygen torch, all of which are components of the Bureau's...
Publication: CIM Bulletin
Auteur(s): FRANK J. PERZAK, ELLSWORTH R. SPENCER, MICHAEL J. SAPKO
Mots clés: Conveyor belts, Belt conveyors, Fire resistance, Flammability index, Ignitors, Flame spread.
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: Despite the availability of established, sophisticated methods for planning and designing stable slopes in rock, comparatively little attention is usually paid to the problems of carrying out the excavation. Blasting should be carefully planned to obtain optimum fragmentation as well as steep, stable working and final pit walls. The principal difficulty facing a blast designer is the lack of prior information about the many critical blasting characteristics of the rock mass. The common...
Publication: CIM Bulletin
Auteur(s): JOHN C. LEIGHTON, C.O. BRAWNER, DOUG STEWART
Mots clés: Open-pit mining, Drilling, Blasting, Powder factors, Rock mechanics, Slope stability, Rock quality index, Afton deposit.
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: Waste dump development at the Fording River Operations in British Columbia began in 1971. In 1981, several unique as well as unplanned situations provided an opportunity to study water flows through waste dumps.The key to the drainage is naturally segregated rock sizes created by end dumping from the crest of a pile. The largest size material accumulates at the toe. Flow rates along the base of the studied dumps varied from 2,800 to 13,500 m3/day or 0.032 to 0.156 m3/s (1.2-5.5 cfs). Sediment...
Publication: CIM Bulletin
Auteur(s): R.S. NICHOLS, A.L. RUTLEDGE
Mots clés: Open-pit mining, Waste dumps, Waste materials, End dumping, Rock segregation, Water flow, Sediment concentrations, Drainage, Fording Coal.
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: The Corbin area of southeastern British Columbia has been a coal mining area since 1908. Byron Creek Collieries Ltd. has operated its Coal Mountain Mine in this area from 1974 until the present. In February 1981, this company was purchased by Esso Resources Canada Ltd.Coal Mountain is structurally complex and standard computer algorithms are not applicable to model the overturned synclinal structures and faulted bedding surfaces. This paper discusses two approaches used by Esso Resources...
Publication: CIM Bulletin
Auteur(s): M. LYTLE
Mots clés: Open-pit mining, Modelling, Computer modelling, Coal Mountain mine, Coai mining, Bench plans.
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: The historical transformations in fire-resistant conveyor belt compositions in the past 20 years have been influenced by factors of material cost, changing flame and burn test requirements, material replacements, adhesion and oil resistance considerations, increased responsibility and legal liability. Specifically, this has resulted in a swing from neoprene-cotton belts to S.B.R. blends and synthetic fibre carcasses, and tighter quality control and documentation of test data.Flame dynamics...
Publication: CIM Bulletin
Auteur(s): DOUGLAS H. SILVEY
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: The Aggregate Resources Inventory Program was initiated to produce reports which assess the aggregate resources of municipalities designated under the Pits and Quarries Control Act, 1971.Each report consists of three copies accompanied by a text. The text describes the local mineral aggregate resources, extractive activity and characteristics of the "Selected Deposits". The first map shows the known sand and gravel resources and their quality. The second map indicates selected sand...
Publication: CIM Bulletin
Auteur(s): DALE SCOTT
Mots clés: Aggregates, Ontario, Terrain geology, Pits and Quarries Control Act, Reports, Maps, Sand, Gravel, Clay, Stone, Adjala Township.
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: The Aggregate Resources Inventory Program was initiated to produce reports which assess the aggregate resources of municipalities designated under the Pits and Quarries Control Act, 1971.Each report consists of three copies accompanied by a text. The text describes the local mineral aggregate resources, extractive activity and characteristics of the "Selected Deposits". The first map shows the known sand and gravel resources and their quality. The second map indicates selected sand...
Publication: CIM Bulletin
Auteur(s): DALE SCOTT
Mots clés: Aggregates, Ontario, Terrain geology, Pits and Quarries Control Act, Reports, Maps, Sand, Gravel, Clay, Stone, Adjala Township.
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: A program of mapping, sampling and testing to determine the potential of the aggregate resources throughout Newfoundland and Labrador was commenced in 1978. A 6-km-wide corridor parallel to all transportation routes was selected as the study area.The study consisted of a preliminary surficial interpretation followed by field mapping and sampling. Granular resources were sampled at a 500-m interval and non-granular materials were sampled at a 1.5- to 2-km interval. Data were gathered on...
Publication: CIM Bulletin
Auteur(s): D.G. VANDERVEER, R. RICKETTS, F. KIRBY
Mots clés: Aggregates, Newfoundland, Labrador, Surficial geology, Sand, Gravel, Stone, Structural materials, Mapping, Sampling.
Numéro: 844
Volume: 75
Année: 1982
Texte
Sommaire: Paramount to sound aggregate resource management is an awareness of what resources exist. For the past six years, New Brunswick has been conducting granular aggregate resource inventories in and around urban centres as a means of documenting, both qualitatively and quantitatively, these resources.These aggregate studies require extensive ground truthing due to the often small nature of the surficial features as well as extensive foliage. Approximately 35% of the province's land mass has been...
Publication: CIM Bulletin
Auteur(s): D.E. BARNETT
Mots clés: Aggregates, New Brunswick, Resources management, Sand, Gravel, Stone, Granular aggregates, Mapping, Surficial geology, Quarries.
Numéro: 844
Volume: 75
Année: 1982
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