Publication Name: Australasian Exploration Geoscience Conference 2019
Authors: Jim Austin, Andreas Björk, Ben Patterson
Date Published: September 2019
Number of Pages: 5
Abstract:
Iron Oxide Copper-Gold deposits (IOCGs) are structurally controlled, and typically display zonation of iron oxides and sulphides, which is potentially related to redox zonation. There are three main factors that determine the location and architecture of an IOCG: 1. fluid pathway(s); 2. trap/host, and; 3. plumbing system (i.e., mechanisms for depressurising the system). Generally, these are loosely referred to as structural controls, but they exercise very different functions within the system. In this study we integrate the results of petrophysical property analyses (including, magnetic susceptibility, remanence, radiometrics and conductivity), structural fabric analyses and TIMA scans that provide information on both mineralogy and texture. The results when placed in an oreproximal-distal-background framework, allow us to understand the footprint of the system.