Source of salinity in the Broken Hill (Australia) Pb-Zn-Ag deposit: Insights from halogen ratios in fluid inclusions
August 18, 2017
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.
Citation Information
| Publication Year | 2017 |
|---|---|
| Title | Source of salinity in the Broken Hill (Australia) Pb-Zn-Ag deposit: Insights from halogen ratios in fluid inclusions |
| Authors | John F. Slack, D.A. Banks, R.T. Wilkin |
| Publication Type | Conference Paper |
| Publication Subtype | Conference Paper |
| Index ID | 70223234 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Eastern Geology and Paleoclimate Science Center |