Evolution of basin-derived IOCG-related hydrothermal fluids in the Wernecke Mountains, Canada

Gillen, David, Baker, Tim, Ryan, Chris, and Kendrick, Mark (2010) Evolution of basin-derived IOCG-related hydrothermal fluids in the Wernecke Mountains, Canada. In: Proceedings of the 10th Biennial Meeting of the the SGA 2009, pp. 629-631. From: Smart Science for Exploration and Mining: 10th Biennial Meeting of the SGA 2009, 17-20 August 2009, Townsville, QLD, Australia.

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Abstract

A study of fluid inclusion and alteration chemistry has revealed new information regarding the source and evolution of IOCG-related hydrothermal fluids in the Wernecke Mountains, Canada. The evidence suggests that the dominant hydrothermal fluids originated as seawater-derived bittern brines that variably dissolved evaporitic halite. A minor basement-derived fluid has also been detected in at least one location. Sampling of fluids from different points along fluid flow paths highlight an evolving fluid chemistry that was strongly controlled by temperature, salinity and redox conditions. Generally low metal concentrations in the fluids were probably a key factor limiting the formation of economic IOCG deposits in the area.

Item ID: 22966
Item Type: Conference Item (Research - E1)
ISBN: 978-0-9805-5868-5
Keywords: Wernecke, IOCG, fluid inclusions, evaporites, fluid source
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Date Deposited: 15 Aug 2012 05:29
FoR Codes: 04 EARTH SCIENCES > 0402 Geochemistry > 040201 Exploration Geochemistry @ 100%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840102 Copper Ore Exploration @ 33%
84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840104 Iron Ore Exploration @ 33%
84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840105 Precious (Noble) Metal Ore Exploration @ 34%
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