The Canadian Institute of Mining, Metallurgy & Petroleum (CIM) has published a comprehensive reference on porphyry deposits of the northwestern Cordillera.
Entitled Porphyry Deposits of the Northwestern Cordillera of North America, Special Vol. 46, the book is edited by T.G. Schroeter. The earliest volumes in the series date back to the 1960s.
Porphyry-hosted deposits of copper, molybdenum, tungsten and precious metals have been the greatest contributors to the mineral wealth of British Columbia for decades.
The volume features 67 original papers and two that were previously published in another CIM Special Volume. The first seven papers provide an overview of the geology of porphyry-type deposits in the region; in succeeding sections, papers on individual mines and prospects provide insight into porphyry copper deposits of calc-alkaline and alkaline intrusive suites, porphyry molybdenum-tungsten deposits, and porphyry gold deposits.
The new volume ranges from the discoveries of the 1950s and 1960s in the Highland Valley and Babine districts to developing and newly producing deposits, such as Huckleberry, Fort Knox and Mount Polley.
The volume benefits from color plates and clearly delineated line drawings.
Exploration geologists and students will find the new volume loaded with information on porphyry-type deposits, and the quality of the papers is generally high. Antiquarian interests will be served by an engagingly written retrospective on the history of exploration for these deposits, and by an excellent collection of photographs dating back to the 1950s.
The book will be well-thumbed by anyone interested in big, low-grade metal mines and the people and organizations that made them.
The cost is $75 (plus shipping and handling) for CIM members, and $95 for non-members.
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