The Spike in Orogenic Gold Mineralization in the Paleoproterozoic: Linked to Anomalously High Iron-Rich Sedimentary rock?  

Authors / CoAuthors

Lambeck, A. | Mernagh, T.P. | Wyborn, L.A.I.

Abstract

Globally supracrustal sedimentary rocks are known to preferentially precipitate gold between 2400 Ma and 1800 Ma (Goldfarb et al. 2001). The Palaeoproterozoic Tanami and Pine Creek regions of Northern Australia host one world-class gold deposit and many other gold deposits in anomalously iron-rich marine mudstones (Figure 1). New fluid-rock modelling at temperatures between 275 - 350C suggest a strong correlation between gold grade and these Palaeoproterozoic iron-rich, fine-grained sedimentary rocks.

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nonGeographicDataset

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70613

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• External Publication

( Theme )

• economic geology

( Theme )

• gold

( Theme )

• geochemistry

( Theme )

• geochemical modelling

Australian and New Zealand Standard Research Classification (ANZSRC)

• Earth Sciences

• Published_Internal

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2010-06-21T00:00:00

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