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TitleMicroanalytical geochemical analysis of texturally variable pyrite associated with mineralization and surrounding host rocks in the Howard's Pass District, Selwyn Basin, Yukon
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AuthorGadd, M; Layton-Matthews, D; Paradis, S; Peter, J
SourceGeological Survey of Canada, Open File 7353, 2013, 1 sheet, https://doi.org/10.4095/292483 (Open Access)
Image
Year2013
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
File formatpdf
ProvinceYukon; Northwest Territories
NTS105I
AreaHoward's Pass; Selwyn Basin; Nahanni River
Lat/Long WENS-130.0000 -128.0000 63.0000 62.0000
Subjectseconomic geology; geochemistry; sedimentary ore deposits; mineral deposits; zinc; lead; silver; barium; mineralization; pyrite; textural analyses; sedimentary rocks; sandstones; shales; cherts; dolomites; limestones; petrography; trace element analyses; Selwyn Basin; Duo Lake Formation; Steel Formation; SEDEX deposits; Proterozoic; Paleozoic; Cambrian; Ordovician; Devonian; Mississippian; Silurian
Illustrationslocation maps; photomicrographs; diagrams; tables; profiles
ProgramSouthern Cordillera TGI-3, Targeted Geoscience Initiative (TGI-3), 2005-2010
ProgramSedimentary Exhalative Ore Systems, Targeted Geoscience Initiative (TGI-4)
Released2013 05 16
Summary(Plain Language Summary, not published)
This study aims at improving the current understanding of the controls on metal enrichment and distribution in Zn-Pb sedimentary exhalative (sedex) deposits of the Howard's Pass District through the use of high-resolution and micro-scale analytical methods. Pyrite morphologies and textural zoning imitate trace element geochemical zoning, supporting the interpretation that pyrite growth occurred in discrete stages. Assuming that framboïdal pyrite formed during, or shortly after sedimentation and that overgrowths formed during diagenesis and (pre?)-Cordilleran compressional tectonism, a long fluid history is likely recorded in the geochemical trends of pyrite.
GEOSCAN ID292483