La determination des EGP dans les roches: revue des techniques analytiques basees sur Putilisation de la fusion plombeuse et de la fusion au sulfure de nickel

Abstract Mineral exploration for PGE (PGE: platinum, palladium, iridium, osmium, ruthenium, rhodium) requires appropriate measurement methods. Selecting an appropriate analytical method must take into account several factors. The most important ones are: the type of material to be analyzed, its representativity, the required detection limits and the operational cost. Several analytical approaches are possible, all of which require a preconcentration step. One of the most appropriate methods consists of carrying out a lead fire-assay followed by ICP-ES measurements (15 $/sample). In cases where one or more of the PGE are present in interesting concentrations, a preconcentration by nickel sulphide fire-assay followed by neutron activation provides concentration for all PGE as well as gold measurements (90 $/sample). It must be stressed that nickel, if present at concentrations higher than 4%, interferes during the preconcentration step by lead fire-assay, which causes platinum concentration to be underestimated. Therefore, PGE exploration program in nickel-rich rocks should utilize a nickel sulphide fire-assay instead of a lead fire-assay.
Keywords: Exploration, Platinum group elements, Lead fire-assay, Nickel sulphide fire-assay.
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Summary: This paper deals with the organization of the central office technical areas and the role played during the feasibility studies, construction and operating phases of Les Mines Selbaie.
Publication: CIM Bulletin
Author(s): A.J.W. Law
Keywords: Feasibility studies, Engineering, Les Mines Selbaie.
Issue: 936
Volume: 83
Year: 1990
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Summary: The development and operation of the milling circuits treating the different Selbaie orebodies are discussed in this paper. The project is reviewed from metallurgical evaluation through construction to present operating status. The current flowsheets are described, with discussion of some unusual features.
Publication: CIM Bulletin
Author(s): Ken Wood, Luc Duval
Keywords: Les Mines Selbaie, Mining operations, Concentrator development, Copper, Zinc, Gold, Silver
Issue: 936
Volume: 83
Year: 1990
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Summary: The expansion undertaken at Selbaie in 1985 necessitated an adaptation and expansion of the equipment maintenance system. This paper relates briefly the stages of transformation of the maintenance administrative structures, work methods and tools.
The maintenance in a mechanized mine requires an expenditure level in the order of 20% of the total operating cost of the enterprise. Thus, the maintenance organization was modified to apply more computerized planning and follow-up, and the role of...
Publication: CIM Bulletin
Author(s): G. Begin
Keywords: Les Mines Selbaie, Equipment maintenance, Maintenance/ engineering.
Issue: 936
Volume: 83
Year: 1990
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Summary: It is quite likely that more than a handful of junior exploration companies will receive some startling news from their accountants this spring when 1989s tax returns are being prepared. These companies could find that, for the first time ever, they will have to write a cheque to the federal government on account of a new federal capital tax which became effective July 1, 1989.
Publication: CIM Bulletin
Author(s): Robert B. Parsons
Issue: 936
Volume: 83
Year: 1990
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Summary: This paper discusses the exploitation of shallow underground deposits in a very altered geological environment. The methods, their adaptation to local conditions, their evolution, dilution control and recovery of mineral reserves will all be dealt with.
The recovery of the B zone crown pillar under 40 m of till that was originally saturated with water, is of particular interest.
Future underground development and production start-up of the A-2 zone, organization of mining operations,...
Publication: CIM Bulletin
Author(s): Yves Fourmanoit
Keywords: Les Mines Selbaie, Underground mining.
Issue: 936
Volume: 83
Year: 1990
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Summary: This paper describes the operations of the open pit and emphasizes particular aspects of Les Mines Selbaie. The open pit as well as its related services were incorporated into a complex which includes an underground mine and a concentrator. The equipment was chosen with the objective of auto-sufficiency during each phase of mining. The paper outlines the organization and the methods used in each step of mining, notably: drilling, blasting, loading, transporting and crushing. The responsibilit...
Publication: CIM Bulletin
Author(s): Clermont Pageau, Denis Caron
Keywords: Les Mines Selbaie, Open pit mining, Mining methods, Equipment.
Issue: 936
Volume: 83
Year: 1990
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Summary: Accident prevention has been an on-going priorty for five years. In 1987, adherence to the ILCI five-star rating loss control program was started, and a first star was awarded. Extensive training programs have been undertaken to establish standard procedures and upgrade employee skills. Due to its location, Selbaie owns and rents housing in the town of Joutel and contracts a busing service to and from the mine. Employees from other areas are lodged in dormitories and fed in the site dining...
Publication: CIM Bulletin
Author(s): R.C. Bryce
Keywords: Technical services, Administrative services, Human resources, Les Mines Selbaie.
Issue: 936
Volume: 83
Year: 1990
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Summary: Selbaie is located northwest of Joutel, in what is known as the fourth east-west volcanic sediment group in northwestern Quebec. The main metals produced are copper and zinc, with important contents of both silver and gold. Production comes from an open pit mine on the A-l zone and from two underground mines on the B zone and the A-2 zone. Each mine gave rise to important capital investment programs for construction and mine development, all of which were managed and staffed with company-hire...
Publication: CIM Bulletin
Author(s): R.C. Bryce
Keywords: Les Mines Selbaie, Mine development.
Issue: 936
Volume: 83
Year: 1990
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Summary: Located in the northwestern portion of the Abitibi greenstone belt, Les Mines Selbaie is a copper-zinc (silver and gold) producer. Felsic tuffs host three ore zones. Composed of sulphide veins and breccias, they are not exhalative massive sulphide deposits, except, probably, for the massive pyrite (fragments and lenses) localized close to the top of the volcanic sequence.
The total of all (mineable and mined) ore in the three zones presently outlined on the property, is of the order of 29.9 x...
Publication: CIM Bulletin
Author(s): J.J. Bouillon
Keywords: Geology, Les Mines Selbaie, Copper, Zinc, Gold, Silver.
Issue: 936
Volume: 83
Year: 1990
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