Trace Element Geochemistry of Magnetite and Its Relationship to Cu-Bi-Co-Au-Ag-U-W Mineralization in the Great Bear Magmatic Zone, NWT, Canada

• DOI: 10.2113/econgeo.109.7.1901
• Publication Date: 2014-08-27T14:19:24Z
• Authors: P. Acosta-Gongora; S. A. Gleeson; I. M. Samson; L. Ootes; L. Corriveau
• Keywords: Windsor; Trace element; Icon; Geological survey

Research Article| November 01, 2014 Trace Element Geochemistry of Magnetite and Its Relationship to Cu-Bi-Co-Au-Ag-U-W Mineralization in the Great Bear Magmatic Zone, NWT, Canada* P. Acosta-Góngora; Acosta-Góngora † 1Department Earth Atmospheric Sciences, University Alberta, Edmonton, Alberta T6G2E3, Canada †Corresponding author: e-mail, [e-mail] Search for other works by this author on: GSW Google Scholar S. A. Gleeson; Gleeson I. M. Samson; Samson 2Department Environmental Windsor, Ontario N9B3P4, L. Ootes; Ootes 3Northwest Territories Geoscience Office, 601b 52nd Avenue, Yellowknife, Northwest X1A 2R3, Corriveau 4Geological Survey Canada, 490 rue de la Couronne, Québec, QC G1K9A9, Economic Geology (2014) 109 (7): 1901–1928. https://doi.org/10.2113/econgeo.109.7.1901 Article history received: 27 Jun 2013 accepted: 21 Jan first online: 09 Mar 2017 Cite View This Citation Add Manager Share Icon MailTo Twitter LinkedIn Tools Get Permissions Site Acosta-Góngora, Gleeson, Samson, Ootes, Corriveau; Canada. 2014;; doi: Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Dropdown Menu input auto suggest filter your All ContentBy SocietyEconomic Advanced Abstract The Paleoproterozoic magmatic zone is focus ongoing exploration iron oxide copper-gold (IOCG) deposits also hosts oxide-apatite occurrences. Examples IOCG include Sue-Dianne NICO, smaller prospects, including Damp, Fab, Nori/Ra. past-producing Terra mine property significant IOCG-like alteration that contains dome-shaped, bodies. Petrographic study has identified multiple generations magnetite at Nori/Ra and, most part, a single generation Sue-Dianne, Terra. Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) documents important geochemical differences V, Ni, Cr, Co concentrations within magnetite. Variations trace elements from could be result (1) host rock-fluid equilibration during regional metamorphism, (2) postmetamorphic hydrothermal metasomatism Treasure Lake Group metasedimentary rocks, (3) preferential solubility over Ni Fe-rich fluids, (4) changes oxygen fugacity (fO2), (5) partitioning into coprecipitating sulfides. Regionally, Cr/Co ratio higher barren pre-ore compared coprecipitated with ore minerals and/or present ore-rich veins breccias. Locally, prospect, V/Ni differentiates between ore-related magnetite, Damp Co/Ni extremely high clearly different samples. These results provide database geochemically characterized stages illustrate potential use as an indicator mineral deposits. You do not have access content, please speak institutional administrator if you feel should access.