Gold Deposits of Zimbabwe PDF Download

Author: D. S. Bartholomew
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 84

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Author: Institution of Mining and Metallurgy
Publisher: Springer Science & Business Media
ISBN: 9401136564
Category : Technology & Engineering
Languages : en
Pages : 344

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Book Description
The second 'African Mining' conference is planned for June 1991, and follows the first, very successful, event held in May 1987. That full four-year period was characterized by substantial changes in the political and economic climate of many countries in both hemispheres. Copper prices were relatively firm, and the advance and steady demand for nickel and ferrochromium stabilized important sectors of the mineral industry, certainly in Zimbabwe. The promise for gold remained unfulfilled, but the smaller, relatively flexible, mines survived and only the large, deep and low-value mines seem seriously at risk. None of this has affected the hungry, and intensive exploitations from surface to the water-table have revealed many targets of promise to those willing to take the risks. The pattern in Southern Africa was extraordinarily stable among the turmoil, with independence for Namibia, adjustments in South Africa and a gradual shift to market economies in the region. The pace of exploration has increased to recover some part of the progress that was lost in the Independence struggle, and atthe end of the first decade in Zimbabwe, for example, oil is being sought in the Zambesi Rift, following the investigation of the Luangwa in Zambia, and there are exciting exploration projects for methane released from coal, deep in its basins.

Author: Martin D. Prendergast
Publisher:
ISBN: 9781779213716
Category : Mines and mineral resources
Languages : en
Pages : 0

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Author: M.J. Bickle
Publisher: CRC Press
ISBN: 1000099636
Category : Science
Languages : en
Pages : 248

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A study on the Bellingwe Greenstone Belt, presenting the stratigraphy of the belt, its structure and tectonic setting, the sedimentology of what may be a rift basin, the geochemistry of the freshest Archaean komatiites yet found, and models of the evolution of the region.

Author: Boris Verbrugge
Publisher: Springer Nature
ISBN: 3030384861
Category : Political Science
Languages : en
Pages : 379

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Book Description
In recent decades, gold mining has moved into increasingly remote corners of the globe. Aside from the expansion of industrial gold mining, many countries have simultaneously witnessed an expansion of labor-intensive and predominantly informal artisanal and small-scale gold mining. Both trends are usually studied in isolation, which contributes to a dominant image of a dual gold mining economy. Counteracting this dominant view, this volume adopts a global perspective, and demonstrates that both industrial gold mining and artisanal and small-scale gold mining are functionally integrated into a global gold production system. It couples an analysis of structural trends in global gold production (expansion, informalization, and technological innovation) to twelve country case studies that detail how global gold production becomes embedded in institutional and ecological structures.

Author: C. S. L. Chachage
Publisher: Nordic Africa Institute
ISBN: 9789171063403
Category : Technology & Engineering
Languages : en
Pages : 116

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Book Description
Examines the evolution of the mining industry since the 1970s and considers how the political situation influences private and foreign investment.

Author: Ken McCaffrey
Publisher: Geological Society of London
ISBN: 9781862390348
Category : Science
Languages : en
Pages : 340

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Book Description
Hydrothermal mineralization is usually structurally controlled so it is important to understand the role of faulting and fracturing in enhancing rock permeability and facilitating fluid flow and mass transfer. This is the main theme of this interdisciplinary volume and the papers included are intended to provide an overview of current ideas at the interfaces of structural geology, fluid flow and mineralization research.

Author: Reid R. Keays
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 682

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Includes detailed and technical discussions of deposits in Canada, Zimbabwe, South Africa, Australia, Chile, United States, Japan, and Czechoslovakia.

Author: Neil Phillips
Publisher: Springer Nature
ISBN: 981163081X
Category : Science
Languages : en
Pages : 294

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Book Description
This book addresses the origin of gold deposits to answer questions of science and curiosity. These answers contribute in turn to the improved exploration and mining of gold. Initially there is a summary of the methods used to address the genesis of gold deposits including some of the essential science and concepts. Five basic observations follow that apply to many gold deposits and need to be considered in any genetic ideas. Magmatic processes enriching gold are discussed followed by the role of aqueous fluids during gold deposit formation at elevated temperatures and pressures. Modifying effects after deposit formation include high-grade metamorphism, retrogression, weathering, and erosion. The main types of gold deposits are then explained within the spectrum of viable genetic ideas, with informal names for these examples that include gold-only, gold-plus, Carlin, slate-belt, epithermal, porphyry, iron oxide copper gold, and Archean greenstone. Case histories are included in which the role of gold geology contributed directly to discoveries—one example is at the province-scale and another at the goldfield-scale. Unlike other books on the subject, this one addresses virtually all gold deposit types rather than focusing on one type in isolation. The primary readership includes industry geologists, senior undergraduates, postgraduates, and those with some knowledge of science and an interest in the gold industry.

Author: Ulrich Kretschmar
Publisher: Elsevier
ISBN: 0128032235
Category : Science
Languages : en
Pages : 356

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Book Description
The Metallogeny of Lode Gold Deposits: A Syngenetic Perspective is a synthesis of lode gold vein forming processes, addressing the commonality in similar worldwide deposits. The book's empirical model incorporates widely known and accepted principles of ore deposition and shows how it applies in the volcanic-sedimentary greenstone belt environment. Several chapters detail outcrop maps and photos of field occurrences and textures. The interpretations flow directly from the authors' field work, and are coupled with analyses of underlying physical processes. Utilizing detailed geological mapping, field work, and chemical analyses as the basis of a syngenetic formation mode, the text arms readers with the tools necessary to accurately analyze and interpret new data on the subject. This includes information on decoding the significance of asymmetry in vein formation, as well as the role of lamprophyres in gold camps, how Archean geology requires integration into a lode vein formation model, and how to develop an understanding of the worldwide applicability of gold cycles to lode vein formation and exploration and how it can be applied to deposits of all ages. - Presents the first book to galvanize lode gold research into a single authoritative reference - Simplifies the complexity of lode gold's underlying processes and presents valid concepts surrounding the lode gold forming environment - Features color figures, illustrations, and photos that enrich the content's focus and aid in the retention of key concepts