Source of salinity in the Broken Hill (Australia) Pb-Zn-Ag deposit: Insights from halogen ratios in fluid inclusions

John F. Slack; D.A. Banks; R.T. Wilkin

Source of salinity in the Broken Hill (Australia) Pb-Zn-Ag deposit: Insights from halogen ratios in fluid inclusions

By: John F. Slack, D.A. Banks, and R.T. Wilkin

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Abstract

Ratios of Na/Br, Br/Cl, and I/Cl were determined on leachates of fluid inclusions from the Broken Hill Pb-ZnAg deposit in Australia. Paragenetic relations suggest that whereas all analyzed inclusions formed during or after regional metamorphism, ion ratios are not greatly changed from those of the pre-metamorphic ore-forming fluids. Based on relatively high Br/Cl and I/Cl ratios, and low Na/Br ratios, we suggest that the high salinities that characterize Broken Hill fluid inclusions reflect a source dominated by evaporated seawater and not dissolved evaporites.

Suggested Citation

Slack, J.F., Banks, D., Wilkin, R., 2017, Source of salinity in the Broken Hill (Australia) Pb-Zn-Ag deposit: Insights from halogen ratios in fluid inclusions, in 2017 Quebéc: Mineral resources to discover, Quebéc, Canada, August 20-23, 2017, p. 637-640.

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Additional publication details
Publication type	Conference Paper
Publication Subtype	Conference Paper
Title	Source of salinity in the Broken Hill (Australia) Pb-Zn-Ag deposit: Insights from halogen ratios in fluid inclusions
Year Published	2017
Language	English
Publisher	Society for Geology Applied to Mineral Deposits
Contributing office(s)	Eastern Geology and Paleoclimate Science Center
Description	4 p.
Larger Work Type	Book
Larger Work Subtype	Conference publication
Larger Work Title	2017 Quebéc: Mineral resources to discover
First page	637
Last page	640
Conference Title	14th Biennial SGA Meeting
Conference Location	Quebéc, Canada
Conference Date	August 20-23, 2017
Country	Australia
Other Geospatial	Broken Hill