00000nam 2200000zi 4500 9.959241 CaOODSP 20260123144839 m o d f cr cn||||||||| 260123t20142014oncab ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-yk M183-2/7511E-PDF Gadd, M. G., author. Trace element characteristics and S isotopic compositions of pyrite in the Howard's Pass Zn-Pb District, Selwyn Basin, Yukon / M. Gadd, D. Layton-Matthews, J. Peter and S. Paradis. [Ottawa] : Natural Resources Canada = Ressources naturelles Canada, 2014. ©2014 1 online resource (1 poster) : colour illustrations, colour map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Open file = Dossier public, 2816-7155 ; 7511 ISSN of series supplied from ISSN Portal. "Targeted Geoscience Intiative 4: Increasing Deep Exploration Effectiveness." Includes bibliographical references. "The Howard's Pass Zn-Pb district (HPD) is a sedimentary exhalative (SEDEX) district comprising 14 Zn-Pb deposits that contain an estimated 400Mt of Zn and Pb grading at 5% and 2%, respectively. The HPD is located within the Selwyn Basin, a prolific metallogenic province that is primarily known for its world-class Zn-Pb (±Ag ±Ba) SEDEX deposits. Pyrite is a minor but ubiquitous component of the sulfide mineralogy, which is dominantly comprised of sphalerite and galena, and is also present in the host carbonaceous mudstones in the HPD. We have used electron probe microanalysis-wavelength dispersive spectrometry (EPMA-WDS), laser ablation-inductively couple plasma mass spectrometry (LA-ICP-MS) and secondary ion mass spectrometry (SIMS) to determine the major element chemistry, trace element chemistry and S isotopic compositions, respectively, of the different textural varieties of pyrite throughout the stratigraphic succession that hosts SEDEX mineralization at the HPD. Petrographic, LA-ICPMS and EPMA-WDS data provide information on the composition and relative timing of depositional, diagenetic and metamorphic fluids responsible for multiple generations of pyrite formation. SIMS data reveal trends in the sulphur isotopic compositions of pyrites and offer new insight into the redox conditions of the ambient marine bottom waters in which framboidal pyrites were precipitated. These data suggest that the timing of hydrothermal SEDEX fluids were not coeval with sedimentation, but are synchronous with diagenesis"--Rationale and purpose. Pyrites Yukon Analysis. Zinc ores Yukon. Lead ores Yukon. Ore deposits Yukon. Pyrite Yukon Analyse. Zinc Minerais Yukon. Plomb Minerais Yukon. Gîtes minéraux Yukon. Geological posters lcgft Affiches géologiques rvmgf Geological Survey of Canada, issuing body. Open file (Geological Survey of Canada) 7511. (CaOODSP)9.506878 PDF 408.00 MB https://publications.gc.ca/collections/collection_2026/rncan-nrcan/m183-2/M183-2-7511-eng.pdf HTML N/A https://doi.org/10.4095/293468