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Fluid inclusion study of the unexposed Kentstown Granite, Co. Meath, Ireland
By M. Feely, W. G. O'Keefe, C. O'Reilly, M. P. Holdstock
A petrographic and microthermometric study of fluid inclusions in the Kentstown Granite, crosscutting quartz (VI) and calcite+quartz (V 2) veins in the granite and calcite+quartz (V 2) veins in the ov
Jun 19, 1905
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Bross process: bio-treatment of alkaline slags produced during lead recycling
By L. J. Barnes
The process for bio-remediation of sulphidic slag (BROSS) operates at 45 degrees C in a neutral (pH 7), aerobic aqueous environment in which sulphide in the slag is converted to sulphate. A two-stage
Jun 18, 1905
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Recovery of molybdenum as molybdic oxide from Rakha molybdenite, India, by soda-ash roasting
By D. K. Bose, R. H. Rakhasia, V. D. Shah, J. C. Sehra
A series of experiments was conducted to determine the effects of roasting temperature, soaking period and quantity of soda ash added. At a laboratory scale, under optimum conditions of roasting at 87
Jun 18, 1905
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Resource evaluation of Nsuta manganese carbonate deposit, Ghana
By S. Al-Hassan
The deposit has been exploited for Mn oxide and carbonate since 1916. Known reserves of MnO, however, are almost depleted and the survival of the mine will depend on the exploitation of the carbonate.
Jun 19, 1905
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Open-pit design and scheduling by use of genetic algorithms
By B. Denby
Paper presented at a meeting on: Artificial intelligence in the minerals sector, held in Nottingham, UK, 20 April 1993. The design and scheduling of open pit operations are consistent problems encount
Apr 1, 1994
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Dispersion of platinum, palladium and gold from the Main Sulphide Zone, Great Dyke, Zimbabwe
By D. M. Evans, D. L. Buchanan
Paper presented at the IAGOD international symposium on mineralisation related to mafic and ultramafic rocks, held in Orleans, France, 1-3 September 1993. The Zinca area was chosen as a suitable locat
Apr 1, 1994
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Antimony-gold deposits of North-Atlantic Acadian-Hercynian domain
By M. L. Leblanc, J. F. Burzynski, D. J. Mossman
A strong heterogeneity in the distribution of Sb+/-Au deposits exists within the North Atlantic Acadian-Hercynian domain. This is reflected in the regional disparity in Sb production among the various
Dec 1, 1991
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Bohmke reef: platinum-group element mineralization associated with C1d chromitite of the Great Dyke, Zimbabwe
By S. J. Parry, D. M. Evans, D. L. Buchanan
The reef is a PGE-enriched sulphidic zone, stratigraphically associated with and overlapping the C1d chromitite layer, that was formed by magmatic processes at the 1e-1d subunit boundary. Two distinct
Apr 1, 1996
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Stability analysis of open-pit copper mine by use of numerical modelling methods
By B. B. Dhar
Slope stability at the proposed mine in Rajasthan was analysed in two dimensions using a finite difference code. The properties of the rock material were determined in the laboratory and subsequently
Aug 1, 1994
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Effect of guar gum on selective separation of sphalerite from galena by flotation
By R. K. Rath
Adsorption, electrokinetic and flotation studies were carried out. The maximum density of adsorption of guar gum was obtained at pH 7.5 on sphalerite and at pH 11.5 on galena. Flotation recovery of sp
Jun 21, 1905
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Analysis by chemical potential diagram of the oxidation of molten silver selenide
By G. G. Barbante
An understanding of the thermodynamics of smelting copper anode slimes is a prerequisite for improvements to the process. During slimes smelting, a silver-copper selenide matte is formed and subsequen
Jun 21, 1905
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Effect of polyamines on mineral separation of nickel-copper ores: chelation equilibria in collectorless floation with DETA
By S. Kelebek
DETA exhibits a highly selective depressant action on pyrrhotite without adversely affecting the collectorless flotability of pentlandite and chalcopyrite in nickel-copper ores of the Sudbury region.
Jun 18, 1905
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Comparative analysis of toppling behaviour at Chuquicamata open-pit mine, Chile
By P. Varona, L. Lorig, M. Board, E. Chacon
Geomechanical factors at the mine are important and will become even more relevant as the pit expands and deepens. To address these demands a team was assembled to collect geomechanical information an
Apr 1, 1996
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Spanish roofing slate deposits
By M. Lombardero, J. Garcia-Guinea, J. Taboada, B. W. Roberts
The structural, textural and mineralogical properties of the slate formations of NW Spain make it the most important district in the world for quarrying roofing slates. Over the past 10 years the intr
Jun 19, 1905
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Metasediment-hosted epithermal Sb-(Au) mineralization in central Spain: role of hidden Hercynian granitoids
By M. Gallego, R. Oyarzun, L. Ortega
Evidence of metallogenic activity in an area dominated by Upper Precambrian and Palaeozoic metasediments was partially explained in the 1980s when drilling and a geophysical survey detected hidden int
Aug 1, 1995
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Flotation of pyrite and arsenopyrite at alkaline pH
By R. J. Gochin, M. A. Diaz
A modified Hallimond tube is described which allows the determination of the ultimate recovery R and the flotation rate constant k in a single, continuous experiment. The range of fine particles which
Apr 1, 1995
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Geological setting of iron deposits of Hekimhan Province, Malatya, central Anatolia, Turkey
By J. Konnerup-Madsen, T. Unlu, H. Stendal
Paper presented at the conference Economic geology in Europe and beyond II, models for mineral deposits in sedimentary basins, held in Keyworth, UK, 13-14 April 1994. The region includes the Deveci si
Apr 1, 1995
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Effect of charge moistening on alkali roasting of chromium oxide
By A. K. Tripathy, P. K. Pattnayak, H. S. Ray
The effects of water addition on the solid-state reaction between Cr2O3 and Na2CO3 at low temperatures (up to 873 K) were investigated to determine its possible influence on the reaction rate and the
Jun 19, 1905
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Influence of concentrate discharge launder and washing-water system on metallurgical performence of flotation columns: preliminary results of trials in zinc circuit of Aznalcollar concentrator
By J. M. Jimenez, G. D. Schena, A. J. Cazorla
A full-scale Deister column was operated in parallel with the conventional cleaning bank of cells and a pilot Jameson cell in parallel with the conventional rougher cells. Flotation column performance
Jun 18, 1905
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QTz curves for two skew distributions
By A. Berckmans
The key variables in the financial analysis of a mining project include the metal price and the quantities of ore and metal. In general, if the metal price drops, the cutoff grade is increased so as t
Dec 1, 1996