Most of the high-grade iron ore deposits in the Iron Quadrangle (IQ), Brazil are hosted by itabirites of the Caue Formation, a Paleoproterozoic Lake-Superior type Banded Iron Formation. The IQ was affected by two main orogenies, the Transamazonian (2.6 – 2.0 Ga) and the B...
Carlos Rosiere, Ana-Sophie Hensle...
23 June 2012
The Madoonga iron ore deposit in the Weld Range greenstone belt is the product of many overprinting hypogene and supergene fluid events. Each resultant iron ore type has certain physical and chemical properties, as well as a relative economic value.
Steffen Hagemann, Paul Duuring
22 June 2012
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The Beebyn magnetite-martite iron ore deposit in the Weld Range greenstone belt records an interesting series of hypogene alteration events. Simply put, primary silica bands are replaced by hypogene carbonate, which is then dissolved by later fluids, resulting in the concent...
Portable X-Ray Fluorescence (pXRF) analysers represent very powerful tools for the exploration and mining industry. This simple, inexpensive and fast way of analysing cuttings and drill core has become widely used. However, it is essential to consider whether the precision and...
Stefano Caruso, Steven J. Barnes,...
15 June 2012
Komatiite hosted Ni sulfide deposits that are exposed to different degrees of deformation show significant microstructural differences. Highly deformed komatiite-hosted massive Ni sulfide from the Flying Fox deposit (Yilgarn Craton, Australia) consists mainly of pyrrhotite (Fe1...
Marco L. FIORENTINI, Belinda Gode...
The Yilgarn Craton in Western Australia contains evidence of the oldest crust on Earth. Greenstone successions developed after c. 3000 Ma show a complex history of juvenile crust generation and crustal reworking.
T. Campbell McCUAIG, Stephen Wych...
13 June 2012
The purpose of this annual review is to provide all CET stakeholders in academe, industry and government with a snapshot of the centre at the end of 2011, and a glimpse of what CET is set to achieve in the near future.
1 June 2012
The Agnew–Wiluna greenstone belt in the Yilgarn Craton of Western Australia is a narrow package of complexly deformed Archean supracrustal rocks that hosts two of the world’s largest komatiite-hosted nickel sulfide deposits, the Mt Keith and Perseverance deposits. T...
W. Bleeker, Paul Duuring, N. M. R...
6 May 2012
Various lines of evidence lead to the proposal that the underlying key generic factor controlling accretionary orogen gold metallogeny is regional-scale, long-term, pre- and synsubduction heterogeneous fertilisation of the lithospheric mantle that becomes a source of mineralisa...
Robert Loucks, Jon Hronsky, Graha...
1 April 2012
We present the results of two-dimensional numerical modelling experiments on the thermal evolution of Archean greenstones as they sink into a less dense, hot and weak felsic crust. We compare this thermal evolution to that obtained via the analysis of isotopic data and fluid in...
P.F. Rey, Nicolas Thebaud
29 February 2012