Anzeige
Erschienen in:
2005 | OriginalPaper | Buchkapitel
Early-diagenetic sulphides in sediment-hosted deposits: A textural and geochemical study from an unmetamorphosed QPC gold placer, Belle-Brook, New Zealand
verfasst von : D. M. Falconer, D. Craw, K. Faure, L. Lawrance
Erschienen in: Mineral Deposit Research: Meeting the Global Challenge
Verlag: Springer Berlin Heidelberg
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
In many sediment-hosted ore deposits the timing of mineralisation and the role of diagenetic, syngenetic and epigenetic processes in the ore genesis is a contentious issue. Such uncertainty is inevitable in the absence of well-constrained unmetamorphosed assemblages. This study shows that fine-grained early-diagenetic sulphides formed at low temperature in unmetamorphosed auriferous quartz pebble conglomerates (QPC) at Belle-Brook in southern New Zealand have a variety of diagenetic textures and geochemical signatures similar to those attributed to metamorphic and/or hydrothermal processes in a variety of giant sediment-hosted ore deposits. Both sedimentary and diagenetic processes associated with the QPC at Belle-Brook gold are relatively well-constrained, and hence the mineralising processes are more easily understood than those from older sediment-hosted deposits.