Porphyry Copper Ore Formation
B.M. Strunin, V.V. Distler, A.K. Mkrtychyan, 1988. "Porphyry Copper Ore Formation", Geology and Metallogeny of Sulfide Deposits Noril’sk Region U.S.S.R., O.A. Duzhikov, V.V. Distler, B. M. Strunin, A. K. Mkrtychyan, M.L. Sherman, S.S. Sluzhenikin, A.M. Lurye
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Porphyry copper mineralization in the Noril’sk region is an unusual example of the occurrence of this ore type within an ancient platform. Such a spatial setting of these deposits makes one cautious in interpreting the tectonic regime of the boundary portion of the platform, because the majority of porphyry., copper deposits are characterized by certain specific types of geological-tectonic setting [69, 107]. We have already mentioned the important contribution of the tectono-magmatic activity of the platform in the distribution of the endogenic mineralization in the northwestern part of the Siberian platform. However the rifting nature of this activity, with the extensive development of ore deposits related to basic magmatism, is also not typical of porphyry copper deposits, although some scientists believe that these deposits are related to trap magmatism. This point of view is based on the fact that granitoid rocks, which are part of the rock sequences of the layered massifs, are widespread in the upper near-contact zones of some ultramafic/mafic intrusions.
Thus the study of the structure and the systematics of the localization of the porphyry copper deposits in the Noril’sk region is of utmost importance, not only for the interpretation of this type of mineralization but also for understanding the overall development of the whole region.
The Bolgokhtokhsky massif was discovered as a result of exploration in 1965. The first information was published by M.Z. Komarova , who demonstrated its similarity with certain small intrusions of Southern Taimyr. Later, the author continued a study on the
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Geology and Metallogeny of Sulfide Deposits Noril’sk Region U.S.S.R.
The Noril’sk volume is a valuable contribution to the economic geology profession. The translation which is a very literal one from the Russian original, has been ‘donated’ to the Society of Economic Geologists by Falconbridge and Inco. This is the first special publication for the Society. We have two successful series, Reviews in Economic Geology and our Guidebook series. When we were offered this translation we initiated this special publication series. It is hoped that we will continue to pursue and publish other monographs of direct economic interest for our members and the economic geology community at large.
This volume and the accompanying figures (maps), tables and plates presents an excellent overview of the Noril’sk area and the mineralization specific to this region. Considerable awareness of the Noril’sk area has been available through various translations of Russian literature and ever increasing opportunities for western world geoscientists to visit the region. The Society is proud to have this opportunity to provide this comprehensive volume to economic geoscientists.
Many individuals contributed their time, expertise and support. We would like to acknowledge A.J. Naldrett for his efforts in obtaining this translation from Inco and Falconbridge on our behalf. He was also our liaison with the original authors and was very supportive throughout the editing process. Falconbridge initiated the translation and G. Rylkova was contracted to produce a literal translation and we chose to substitute, or identify, a few nonfamiliar Russian terms with equivalent English language terms. However, the substance of the translation has not been changed. The editing concentrated on consistency, accuracy and limited grammatical re-interpretation. A location map and a stratigraphic section were added to the introduction. Suggestions for editing consistency were gratefully received from A. Craigie and R. Horn.
Additional support for production and distribution was received from T. Thompson, J. Robertson, K. Clark.
All figures, tables and plates were redrafted with their interpreted legends by Inco. W. Saftic and W. Peredery provided additional suggestions for drafting format and continuity. Inco and Falconbridge shared all drafting costs and donated this service to the Society of Economic Geologists as well as the translated text. P. Lightfoot gave permission to include the location map and the stratigraphic section in the introduction.
The cover design was produced by C. Podashinsky and the WP formatting was contracted to Keystrokes Business Support Services. Production and printing of the volume was contracted to Citizen Printing Co. Inc. of Fort Collins.