SOME PROBLEMS ABOUT THE GENESIS OF GOLD DEPOSITS IN INTRUSIVES
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P618.510.1

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    Abstract:

    Gold deposits in intrusives of varying ages and types are a main gold type. The genetic relation between gold deposits and intrusives remains controversial, but traditional magmatic hy-drothermal metallogeny is still predominant. This is because the view of magmatic hydrothermal origin is regarded by many researchers as a fixed model and applied in the study of concrete deposits rather than based on an integrated study. On the basis of recent studies of gold deposits, this paper emphasizes a comprehensive consideration of the formation ages and age gap of intrusives and gold deposits and the sources of ore-forming fluids and substances in the genetic study of gold deposits in intrusives. The advances in dating of gold deposits indicate a big time hiatus between deposits and intrusives, which precludes a direct genetic connection between gold and magmatism. Ore-forming fluids of gold deposits might be meteoric, formational or mixing waters , and ore-forming substances might be derived from intrusives, country rocks of intrusives or the deep levels of the crust. This paper holds that gold deposits in intrusives are not of magmatic hydrothermal origin, but a product of late-stage reworking mineralization.

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Mo Cehui.1997. SOME PROBLEMS ABOUT THE GENESIS OF GOLD DEPOSITS IN INTRUSIVES[J]. Geological Review,43(2):139-147.

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