Preliminary evidence for fractionation of stable chlorine isotopes in ore-forming hydrothermal systems

Abstract

Research Article| March 01, 1989 Preliminary evidence for fractionation of stable chlorine isotopes in ore-forming hydrothermal systems Christopher J. Eastoe; Christopher J. Eastoe 1Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Search for other works by this author on: GSW Google Scholar John M. Guilbert; John M. Guilbert 1Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Search for other works by this author on: GSW Google Scholar Ronald S. Kaufmann Ronald S. Kaufmann 2Department of Geology, Northern Illinois University, Dekalb, Illinois 60115 Search for other works by this author on: GSW Google Scholar Author and Article Information Christopher J. Eastoe 1Department of Geosciences, University of Arizona, Tucson, Arizona 85721 John M. Guilbert 1Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Ronald S. Kaufmann 2Department of Geology, Northern Illinois University, Dekalb, Illinois 60115 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1989) 17 (3): 285–288. https://doi.org/10.1130/0091-7613(1989)017<0285:PEFFOS>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Christopher J. Eastoe, John M. Guilbert, Ronald S. Kaufmann; Preliminary evidence for fractionation of stable chlorine isotopes in ore-forming hydrothermal systems. Geology 1989;; 17 (3): 285–288. doi: https://doi.org/10.1130/0091-7613(1989)017<0285:PEFFOS>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Chloride from fluid inclusions in hydrothermal minerals is found to have variable and distinctive δ37Cl values spanning the range -1.1‰ to +0.8‰. In Mississippi Valley-type deposits of Tennessee, brines of high (>0‰) and low (near -1‰) δ37Cl are present. High-δ37Cl brines may be saline formation waters, but low-δ37Cl brines remain unexplained. In porphyry copper deposits, both high-δ37Cl (0.8‰, 0.3‰) and low-δ37Cl(-1.1‰, -0.7‰) hypersaline brines of probable magmatic origin occur. High-salinity magmatic brines with low δ37Cl values contrast isotopically with high-δ37Cl, less concentrated brines responsible for quartz-sericite-pyrite assemblages. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.