Exploration and Discovery of Base and Precious-metal Deposits in the Circum-Pacific Region During the Last 25 Years

Exploration and Discovery of Base and Precious-metal Deposits in the Circum-Pacific Region During the Last 25 Years PDF

Author: Richard H. Sillitoe

Publisher:

Published: 1995

Total Pages: 142

ISBN-13:

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This report describes the exploration and discovery histories of 54 major base- and precious-metal deposits around the Pacific rim over the last 25 years (1970-95). The discoveries are considered to be representative and to include all those of world-class deposits. Each case history places the discovery in a historical context and summarizes the geological, geochemical and geophysical work undertaken prior to discovery, followed by that completed through to production. The time frames and organizational aspects of the exploration programmes are emphiasized along with any special "twists". Each case history is prefaced by the background geology, including tonnage and grade data, and concludes with a brief summary.

Gold Metallogeny and Exploration

Gold Metallogeny and Exploration PDF

Author: B. Foster

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 659

ISBN-13: 9401121281

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Within the last decade, the high and continuing demand for gold has prompted a global gold rush on a scale never before seen, not even in the heady days of Ballarat, California and the Yukon. Gold is being sought on every continent and, with very few exceptions, in every country around the world. Such interest and fierce competition has demanded considerable innovation and improvement in exploration techniques paralleled by a rapid expansion of the geological database and consequent genetic modelling for the many different types of gold deposits now recognized. This proliferation of data has swamped the literature and left explorationist and academic alike unable to sift more than a small proportion of the accumulating information. This new book represents an attempt to address this major problem by providing succinct syntheses of all major aspects of gold metallogeny and exploration, ranging from the chemical distribution of gold in the Earth's crust, and the hydrothermal chemistry of gold, to Archaean and Phanerozoic lode deposits, epithermal environments, chemical sediments, and placer deposits, and culminates in chapters devoted to geochemical and geophysical exploration, and the economics of gold deposits. Each chapter is written by geoscientists who are acknowledged internationally in their respective fields, thus guaranteeing a broad yet up-to-date coverage. In addition, each chapter is accompanied by reference lists which provide readers with access to the most pertinent and useful publications.

Volcaniclastic Rocks, from Magmas to Sediments

Volcaniclastic Rocks, from Magmas to Sediments PDF

Author: H Leyrit

Publisher: CRC Press

Published: 2000-08-08

Total Pages: 314

ISBN-13: 9789056992781

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This volume is an excellently written and beautifully illustrated textbook compiled by a multidisciplinary group of experts examining the production, transport and deposition of volcaniclasts (tephra and epiclasts) as well as their economic geology.

Potassic Igneous Rocks and Associated Gold-Copper Mineralization

Potassic Igneous Rocks and Associated Gold-Copper Mineralization PDF

Author: Daniel Müller

Publisher: Springer

Published: 2015-08-31

Total Pages: 311

ISBN-13: 3319230514

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This book reviews the geochemical and petrological characteristics of potassic igneous rock complexes, and investigates the different tectonic settings in which these rocks occur. The authors provide an overview and classification of these rocks and elucidate the geochemical differences between barren and mineralized potassic igneous complexes. High-K rocks host a number of epithermal gold and porphyry copper-gold deposits. In recent years, there has also been growing recognition of an association of such rocks with iron-oxide copper-gold (IOCG) deposits, intrusion-related gold deposits (IRGDs) and possibly even Carlin-type gold deposits. This book is not only relevant to academic petrologists working on alkaline rocks, but also to exploration geologists prospecting for epithermal gold and/or porphyry copper-gold deposits in modern and ancient terrains. This fourth, updated and expanded edition incorporates new data and references from Africa, Australia, Brazil, China, Greece, Iran, Mongolia, North America, Russia and Turkey, including new maps and sections and new color plates of high-grade gold-copper ore from major deposits hosted by potassic igneous rocks.

Epithermal Gold in the Philippines

Epithermal Gold in the Philippines PDF

Author: A. H. G. Mitchell

Publisher:

Published: 1991

Total Pages: 488

ISBN-13:

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Extended for exploration/economic geologists in universities and mineral resources companies, mineralogists, geochemists and structural/regional geologists, this book provides a comprehensive account of Philippine gold deposits and geology. Epithermal gold deposits present a major challenge to geologists as the nature of surface environment beneath which major deposits develop and the regional geological controls by the creation of major deposits remains poorly understood. New ideas on the genesis of gold deposits and relationship to Phillipine tectonics together with new data on South East Asia gold and tectonics are covered.