The Metallogeny of Lode Gold Deposits A Syngenetic Perspective

About this book

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.

Contents

1. Historical Perspective on Gold Formation Models
2. Interpreting Textures in Outcrop
3. Introduction to Gold Cycles
4. Field Examinations in a Variety of Gold Settings in Canada: The Meguma, Nova Scotia; Chester Twp and Beardmore, Ontario; Maskwa, Manitoba, and Nugget Pond, Newfoundland
5. Why Lamprophyres Have No Role in Lode Vein Genesis
6. Felsic Volcanism Associated with Mineralization in the Chester Complex-Type Gold Deposits
7. Understanding Hydrothermal Systems
8. The Role of Structural Geology and Remobilization#
9. Lode Gold Deposits: Their Geometry and Evidence for Seafloor Vent Systems
10. Toward a Syngenetic Model and Vent Geometry
11. Comparisons, Conclusions, Suggestions for Further Work and Application of the Syngenetic Model

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Biography

Ulrich Kretschmar, PhD was President of Golden Scarab Corporation in Ontario, Canada before he passed away in 2014. He was a mineral exploration geologist by both trade and education, earning his PhD from McGill University and his MSc and BSc from McMaster University. He held a professional geologist accreditation from the Association of Professional Geologists in Ontario. His research focused on gold and ore forming processes and how to translate and interpret them into practical, readily understood concepts for ore deposit exploration. Dr. Kretschmar authored or contributed to more than 50 journal articles.

Derek McBride, PhD, PEng graduated from the Haileybury School of Mines with a diploma in mining technology. His studies continued and he obtained B.Sc. and M.Sc. Degrees in geological engineering from Queen's University and a Ph.D. in geology from the University of New Brunswick. He has taught at St. Francis Xavier University and for the last 39 years has worked throughout the world in mineral exploration. He is credited with the discovery of the Nugget Pond Gold Mine in Newfoundland, Canada. His work has taken him to 17 countries and he has managed major exploration programs in five of them. He continues to consult internationally.