Geochemical Footprints And Structural Localisation Of Ore Grade Au Mineralisation

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Geochemical Footprints and Structural Localisation of Ore-grade Au Mineralisation

Author : Marina D. Schofield
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.:/5 (967 download)

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Book Synopsis Geochemical Footprints and Structural Localisation of Ore-grade Au Mineralisation by : Marina D. Schofield

Download or read book Geochemical Footprints and Structural Localisation of Ore-grade Au Mineralisation written by Marina D. Schofield and published by . This book was released on 2016 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Karangahake adularia-sericite epithermal Au-Ag deposit, located in the southern Coromandel Peninsula, New Zealand, represents an encouraging prospect for future development, with potential for untapped resources. Historically, the Karangahake deposit has contributed 9% of the total gold from the Hauraki Goldfield making it the third largest producer in the region. The vein style mineralisation exhibits undulating strike and, variations in dip, with the main Maria and, Welcome lodes, comprising steeply dipping NE segments and, more moderately dipping NNW segments. Slip and dilation tendency analysis in 3D Stress® indicates that the steeper NE striking portions of the veins are more favourable for slip and dilation under the inferred paleo-stress regime and, hydrostatic conditions. This study indicates that the greatest paleopermeability at Karangahake was sub-vertical, plunging steeply NW, indicating dextral oblique movement. Vein morphology and, slip and dilation tendency analysis suggest that transient, oblique, slip events resulted in NE striking linkage structures between adjacent NNW-oriented fault segments, creating sub-vertical conduits of localised high-flux fluid flow in accommodation zones between adjacent fault segments. Such a configuration is conducive to the formation of near vertical ore shoots. Regional ESE tilting could have resulted in the current exposure of the Welcome/Crown vein to be 90m shallower than the Maria vein along the same level, under the assumption that tilting was latestage or post-mineralisation, which is supported by lower base metal contents and higher kaolinite contents along the Crown/Welcome lodes. This would indicate potential for high-grade mineralisation at depth beneath the currently mined portions of the Crown/ Welcome lodes. Simulations in 3D Stress® indicate that portions of the Maria vein were still favourably oriented for slip and dilation after the inferred 20°ESE rotation of the area, indicating that these structures would have remained active during and after tilting. A comparison of ore grade distribution along the Maria lode, using legacy data to create grade shell interpolants in Leapfrog®, and slip and dilation tendencies indicated by 3D Stress® indicates potential for predictive targeting of high-grade ore using slip and dilation tendency mapping. This is supported by spatial correlations with adularia, a known permeability indicator with an inferred cogenetic relationship with Au. Clay mineral distribution and typical pathfinder element distribution along the number 8 level and 5a level are complicated by supergene alteration, making determining geochemical vectors to high-grade ore using geochemical gradients difficult and more data is needed over the vertical extent of the deposit. This inferred conceptual model for the Karangahake deposit is consistent with regional studies in the CVZ and it supports the notion that recognition of transfer zones and localised rift basins in the CVZ may aid targeting of blind deposits, reducing exploration risk. This study provides promising results for cost-efficient methods of predictive targeting of high-grade ore, which can be further refined with additional data.

Integrated Fault Seal Analysis

Author : S. Ogilvie
Publisher : Geological Society of London
ISBN 13 : 1786204592
Total Pages : 290 pages
Book Rating : 4.7/5 (862 download)

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Book Synopsis Integrated Fault Seal Analysis by : S. Ogilvie

Download or read book Integrated Fault Seal Analysis written by S. Ogilvie and published by Geological Society of London. This book was released on 2020-08-03 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faults commonly trap fluids such as hydrocarbons and water and therefore are of economic significance. During hydrocarbon field development, smaller faults can provide baffles and/or conduits to flow. There are relatively simple, well established workflows to carry out a fault seal analysis for siliciclastic rocks based primarily on clay content. There are, however, outstanding challenges related to other rock types, to calibrating fault seal models (with static and dynamic data) and to handling uncertainty. The variety of studies presented here demonstrate the types of data required and workflows followed in today’s environment in order to understand the uncertainties, risks and upsides associated with fault-related fluid flow. These studies span all parts of the hydrocarbon value chain from exploration to production but are also of relevance for other industries such as radioactive waste and CO2 containment.

Hydrothermal Systems

Author : Christoph A. Heinrich
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Hydrothermal Systems by : Christoph A. Heinrich

Download or read book Hydrothermal Systems written by Christoph A. Heinrich and published by . This book was released on 1989 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Hylogger-3

Author : E. A. Hancock
Publisher :
ISBN 13 : 9781741685251
Total Pages : 24 pages
Book Rating : 4.6/5 (852 download)

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Book Synopsis Hylogger-3 by : E. A. Hancock

Download or read book Hylogger-3 written by E. A. Hancock and published by . This book was released on 2013 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Historical Mining Disasters

Author : Jane DeMarchi
Publisher :
ISBN 13 :
Total Pages : 54 pages
Book Rating : 4.:/5 (327 download)

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Book Synopsis Historical Mining Disasters by : Jane DeMarchi

Download or read book Historical Mining Disasters written by Jane DeMarchi and published by . This book was released on 1997 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Critical Mineral Resources of the United States

Author : K. J. Schulz
Publisher : Geological Survey
ISBN 13 : 9781411339910
Total Pages : 868 pages
Book Rating : 4.3/5 (399 download)

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Book Synopsis Critical Mineral Resources of the United States by : K. J. Schulz

Download or read book Critical Mineral Resources of the United States written by K. J. Schulz and published by Geological Survey. This book was released on 2017 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the importance and dependence of specific mineral commodities increase, so does concern about their supply. The United States is currently 100 percent reliant on foreign sources for 20 mineral commodities and imports the majority of its supply of more than 50 mineral commodities. Mineral commodities that have important uses and face potential supply disruption are critical to American economic and national security. However, a mineral commodity's importance and the nature of its supply chain can change with time; a mineral commodity that may not have been considered critical 25 years ago may be critical today, and one considered critical today may not be so in the future. The U.S. Geological Survey has produced this volume to describe a select group of mineral commodities currently critical to our economy and security. For each mineral commodity covered, the authors provide a comprehensive look at (1) the commodity's use; (2) the geology and global distribution of the mineral deposit types that account for the present and possible future supply of the commodity; (3) the current status of production, reserves, and resources in the United States and globally; and (4) environmental considerations related to the commodity's production from different types of mineral deposits. The volume describes U.S. critical mineral resources in a global context, for no country can be self-sufficient for all its mineral commodity needs, and the United States will always rely on global mineral commodity supply chains. This volume provides the scientific understanding of critical mineral resources required for informed decisionmaking by those responsible for ensuring that the United States has a secure and sustainable supply of mineral commodities.

Geological Methods in Mineral Exploration and Mining

Author : Roger Marjoribanks
Publisher : Springer Science & Business Media
ISBN 13 : 9401158223
Total Pages : 123 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Geological Methods in Mineral Exploration and Mining by : Roger Marjoribanks

Download or read book Geological Methods in Mineral Exploration and Mining written by Roger Marjoribanks and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written as a practical field manual to effective. Each geolOgist has to develop his/her be used by geologists engaged in mineral explo own techniques and will ultimately be judged on ration. It is also hoped that it will serve as a text results, not the process by which these results and reference for students in Applied Geology were reached. In mineral exploration, the only courses of universities and colleges. The book 'right' way of doing anything is the way that aims to outline some of the practical skills that locates ore in the quickest and most cost-effective turn the graduate geologist into an explo manner. It is preferable, however, for an individ rationist:. It is intended as a practical 'how to' ual to develop his/her own method of operation book, rather than as a text on geological or ore after having tried, and become aware of, those deposit theory. procedures which experience has shown to work An explorationist is a professional who search well and which are generally accepted in indus try as good exploration practice. es for ore bodies in a scientific and structured way. Although an awkward and artificial term, The chapters of the book approximately fol this is the only available word to describe the low the steps which a typical exploration pro totality of the skills which are needed to locate gramme would go through. In Chapter 1, the and define economic mineralization.

Introduction to Mineralogy and Petrology

Author : Swapan Kumar Haldar
Publisher : Elsevier
ISBN 13 : 0323851363
Total Pages : 437 pages
Book Rating : 4.3/5 (238 download)

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Book Synopsis Introduction to Mineralogy and Petrology by : Swapan Kumar Haldar

Download or read book Introduction to Mineralogy and Petrology written by Swapan Kumar Haldar and published by Elsevier. This book was released on 2020-07-29 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Mineralogy and Petrology, second edition, presents the essentials of both disciplines through an approach accessible to industry professionals, academic researchers, and students alike. This new edition emphasizes the relationship between rocks and minerals, right from the structures created during rock formation through the economics of mineral deposits. While petrology is classified on the lines of geological evolution and rock formation, mineralogy speaks to the physical and chemical properties, uses, and global occurrences for each mineral, emphasizing the need for the growth of human development. The primary goal is for the reader to identify minerals in all respects, including host-rocks, and mineral deposits, with additional knowledge of mineral-exploration, resource, extraction, process, and ultimate use. To help provide a comprehensive analysis across ethical and socio-economic dimensions, a separate chapter describes the hazards associated with minerals, rocks, and mineral industries, and the consequences to humanity along with remedies and case studies. New to the second edition: includes coverage of minerals and petrology in extra-terrestrial environments as well as case studies on the hazards of the mining industry. Addresses the full scope of core concepts of mineralogy and petrology, including crystal structure, formation and grouping of minerals and soils, definition, origin, structure and classification of igneous, sedimentary and metamorphic rocks Features more than 250 figures, illustrations and color photographs to vividly explore the fundamental principles of mineralogy and petrology Offers a holistic approach to both subjects, beginning with the formation of geologic structures that is followed by the hosting of mineral deposits and the exploration and extraction of lucrative, usable products that improve the health of global economies Includes new content on minerals and petrology in extraterrestrial environments and case studies on hazards in the mining industry

Symposium 2005

Author : Geological Society of Nevada. Symposium
Publisher :
ISBN 13 :
Total Pages : 658 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Symposium 2005 by : Geological Society of Nevada. Symposium

Download or read book Symposium 2005 written by Geological Society of Nevada. Symposium and published by . This book was released on 2005 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM includes the symposium proceedings.

Potassic Igneous Rocks and Associated Gold-Copper Mineralization

Author : Daniel Müller
Publisher : Springer
ISBN 13 : 366200920X
Total Pages : 225 pages
Book Rating : 4.6/5 (62 download)

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Book Synopsis Potassic Igneous Rocks and Associated Gold-Copper Mineralization by : Daniel Müller

Download or read book Potassic Igneous Rocks and Associated Gold-Copper Mineralization written by Daniel Müller and published by Springer. This book was released on 2013-04-17 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, there has been increasing interest from geoscientists in potassic ig neous rocks. Academic geoscientists have been interested in their petrogenesis and their potential value in defining the tectonic setting of the terranes into which they were intruded, and exploration geoscientists have become increasingly interested in the association of these rocks with major epithermal gold and porphyry gold-copper deposits. Despite this current interest, there is no comprehensive textbook that deals with these aspects of potassic igneous rocks. This book redresses this situation by elucidating the characteristic features of potassic (high-K) igneous rocks, erecting a hierarchical scheme that allows interpre tation of their tectonic setting using whole-rock geochemistry, and investigating their associations with a variety of gold and copper-gold deposits, worldwide. About two thirds of the book is based on a PhD thesis by Dr Daniel Muller which was produced at the Key Centre for Strategic Mineral Deposits within the Department of Geology and Geophysics at The University of Western Australia under the supervision of Professor David Groves, the late Dr Nick Rock, Professor Eugen Stumpf!, Dr Wayne Taylor, and Dr Brendon Griffin. The remainder of the book has been compiled from the literature using the collective experience of the two authors. The book is dedi cated to the memory of Dr Rock who initiated the research project but died before its completion.

Scientific Investigations Report

Author : Sharon E. Kroening
Publisher :
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Scientific Investigations Report by : Sharon E. Kroening

Download or read book Scientific Investigations Report written by Sharon E. Kroening and published by . This book was released on 2004 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Building Exploration Capability for the 21st Century

Author : Karen D. Kelley
Publisher :
ISBN 13 : 9781629499291
Total Pages : pages
Book Rating : 4.4/5 (992 download)

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Book Synopsis Building Exploration Capability for the 21st Century by : Karen D. Kelley

Download or read book Building Exploration Capability for the 21st Century written by Karen D. Kelley and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Earth's near-surface mineralogy has diversified over more than 4.5 b.y. from no more than a dozen preplanetary refractory mineral species (what have been referred to as "ur-minerals" by Hazen et al., 2008) to around 5,000 species (based on the list of minerals approved by the International Mineralogical Association; http://rruff.info/ima). This dramatic diversification is a consequence of three principal physical, chemical, and biological processes: element selection and concentration (primarily through planetary differentiation and fluidrock interactions); an expanded range of mineral-forming environments (including temperature, pressure, redox, and activities of volatile species); and the influence of the biosphere.

Hydrothermal Iron Oxide, Copper-gold & Related Deposits

Author : T. Michael Porter
Publisher :
ISBN 13 :
Total Pages : 362 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Hydrothermal Iron Oxide, Copper-gold & Related Deposits by : T. Michael Porter

Download or read book Hydrothermal Iron Oxide, Copper-gold & Related Deposits written by T. Michael Porter and published by . This book was released on 2002 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Mining goes Digital

Author : Christoph Mueller
Publisher : CRC Press
ISBN 13 : 1000439062
Total Pages : 782 pages
Book Rating : 4.0/5 (4 download)

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Book Synopsis Mining goes Digital by : Christoph Mueller

Download or read book Mining goes Digital written by Christoph Mueller and published by CRC Press. This book was released on 2019-05-22 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conferences on ‘Applications for Computers and Operations Research in the Minerals Industry’ (APCOM) initially focused on the optimization of geostatistics and resource estimation. Several standard methods used in these fields were presented in the early days of APCOM. While geostatistics remains an important part, information technology has emerged, and nowadays APCOM not only focuses on geostatistics and resource estimation, but has broadened its horizon to Information and Communication Technology (ICT) in the mineral industry. Mining Goes Digital is a collection of 90 high quality, peer reviewed papers covering recent ICT-related developments in: - Geostatistics and Resource Estimation - Mine Planning - Scheduling and Dispatch - Mine Safety and Mine Operation - Internet of Things, Robotics - Emerging Technologies - Synergies from other industries - General aspects of Digital Transformation in Mining Mining Goes Digital will be of interest to professionals and academics involved or interested in the above-mentioned areas.

Geophysical Inversion

Author : J. Bee Bednar
Publisher : SIAM
ISBN 13 : 9780898712735
Total Pages : 472 pages
Book Rating : 4.7/5 (127 download)

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Book Synopsis Geophysical Inversion by : J. Bee Bednar

Download or read book Geophysical Inversion written by J. Bee Bednar and published by SIAM. This book was released on 1992-01-01 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of papers on geophysical inversion contains research and survey articles on where the field has been and where it's going, and what is practical and what is not. Topics covered include seismic tomography, migration and inverse scattering.

The Geology and Tectonic Settings of China's Mineral Deposits

Author : Franco Pirajno
Publisher : Springer Science & Business Media
ISBN 13 : 9400744447
Total Pages : 689 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis The Geology and Tectonic Settings of China's Mineral Deposits by : Franco Pirajno

Download or read book The Geology and Tectonic Settings of China's Mineral Deposits written by Franco Pirajno and published by Springer Science & Business Media. This book was released on 2012-08-13 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensive descriptions of a wide range of key or world-class mineral deposits of China are presented in the context of the country’s general geology, tectonic units and mineral systems and their geodynamic evolution within the tectonic framework of the Asian continent. This comprehensive overview, incorporating the latest geological concepts, is the first such coverage written in English by a western expert, and will be of benefit to mineral explorers and miners, as well as to research scientists and students in institutions of higher education. In his compilation of this compendium of Chinese geology and mineral systems, Franco Pirajno draws on first-hand knowledge of China’s geology and mineral deposits gained in numerous field visits and research projects with Chinese colleagues from various academic institutions over the past 18 years. First time that a western-based book on China’s geology and mineral deposits is published Appropriate for use by the mineral exploration industry Modern English-language geological and mineral deposits information on China Most useful to Western (and Chinese) geoscientists

Fluid-Fluid Interactions

Author : Axel Liebscher
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 1501509403
Total Pages : 444 pages
Book Rating : 4.5/5 (15 download)

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Book Synopsis Fluid-Fluid Interactions by : Axel Liebscher

Download or read book Fluid-Fluid Interactions written by Axel Liebscher and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 65 of Reviews in Mineralogy and Geochemistry attempts to fill this gap and to explicitly focus on the role that co-existing fluids play in the diverse geologic environments. It brings together the previously somewhat detached literature on fluid–fluid interactions in continental, volcanic, submarine and subduction zone environments. It emphasizes that fluid mixing and unmixing are widespread processes that may occur in all geologic environments of the entire crust and upper mantle. Despite different P-T conditions, the fundamental processes are analogous in the different settings.