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TitleDistribution of trace elements in pyrite from carbonate-hosted sulfide deposits of southern British Columbia
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorParadis, SORCID logo; Jackson, S EORCID logo; Petts, DORCID logo; Simandl, G J; D'Souza, R J; Hamilton, T SORCID logo
SourceTargeted Geoscience Initiative 5: volcanic- and sediment-hosted massive-sulfide deposit genesis and exploration methods; by Peter, J MORCID logo (ed.); Gadd, M GORCID logo (ed.); Geological Survey of Canada, Bulletin 617, 2022 p. 129-163, Open Access logo Open Access
PublisherNatural Resources Canada
Mediaon-line; digital
RelatedThis publication is contained in Targeted Geoscience Initiative 5: volcanic- and sediment-hosted massive-sulfide deposit genesis and exploration methods
File formatpdf
ProvinceBritish Columbia; Alberta
NTS82F; 82G; 82J; 82K; 82N; 82O
AreaRocky Mountains
Lat/Long WENS-118.0000 -114.0000 52.0000 48.0000
Subjectseconomic geology; geochemistry; mineralogy; Science and Technology; Nature and Environment; mineral exploration; exploration methods; mineral deposits; Mississippi Valley deposits; sulphide deposits; sedimentary ore deposits; replacement deposits; base metals; zinc; lead; ore mineral genesis; mineralization; pyrite; petrographic analyses; mass spectrometer analysis; geochemical analyses; trace element geochemistry; morphology; textures; bedrock geology; lithology; sedimentary rocks; carbonates; dolostones; structural features; fractures; fluid dynamics; cobalt geochemistry; nickel geochemistry; Canadian Cordillera; Foreland Belt; Kootenay Arc; Ancestral North America; Reeves MacDonald Deposit; Jersey Emerald Deposit; Jackpot Deposit; Duncan Deposit; Abbott-Wagner Deposit; Phanerozoic; Paleozoic; Devonian; Ordovician; Cambrian
Illustrationslocation maps; geoscientific sketch maps; photomicrographs; tables; plots; profiles
ProgramTargeted Geoscience Initiative (TGI-5) Volcanic and sedimentary systems - volcanogenic massive sulphide ore systems
Released2022 01 27; 2022 11 17
AbstractThis paper combines petrography with in situ laser-ablation inductively coupled plasma mass spectrometry to document trace-element variations in pyrite (Py) from Mississippi Valley-type (MVT) and fracture-controlled replacement (FCR) deposits in the Kootenay Arc, British Columbia.
Three generations of pyrite are Py 1, Py 2, and Py 3. Pyrite 1, the earliest (occurring in MVT deposits only), has higher Ag, Ba, Cu, Ge, Pb, Sb, Sr, Tl, and V than adjacent Py 3. It has higher Ag, Au, Ba, Cu, Ge, Pb, and Tl than Py 2. Pyrite 2 occurs in MVT and FCR deposits. Relative to FCR Py 2, MVT Py 2 is enriched in Co, Ni, Mo, Ba, Tl, and Pb and depleted in other elements. The FCR Py 2 has growth-related compositional banding, which is absent in MVT Py 2. The FCR Py 2 has Ag, Cu, Ga, Ge, In, Sn, and Zn enriched cores, intermediate Au- and As-rich bands, and Co- and Ni-rich rims. Pyrite 3, the latest occurring pyrite, present in MVT and FCR deposits, is enriched in Co and Ni near overgrowths or infillings of sphalerite.
Variations in composition of Py reflect mineralogy, characteristics of ore-forming fluids, and differences in physicochemical conditions between MVT and FCR deposits at the time of ore deposition.
Summary(Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI) is a collaborative federal geoscience program that provides industry with the next generation of geoscience knowledge and innovative techniques to better detect buried mineral deposits, thereby reducing some of the risks of exploration. This contribution summarizes the results of a 5-year study of multiple mineral deposit types: polymetallic hyper-enriched black shale; sedimentary exhalative Pb-Zn; carbonate-hosted Pb-Zn, magnesite; fracture-controlled replacement Zn-Pb, rare-earth element-F-Ba; and volcanogenic massive sulfides. Studies employed field geology, combined with geochemical (lithogeochemistry, stable and radiogenic isotopes, fluid inclusions, and mineral chemistry) and geophysical (rock properties, magnetotelluric, and seismic) methods. Collectively, the research provides advanced genetic and exploration models for volcanic- and sedimentary-hosted base-metal deposits, together with new laboratory, geophysical, and field techniques.

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