©2004 by Economic Geology Vol. 99, pp. 1509–1532 Textural, Compositional, and Sulfur Isotope Variations of Sulfide Minerals in the Red Dog Zn-Pb-Ag Deposits, Brooks Range, Alaska: Implications for Ore Formation
The Red Dog Zn-Pb deposits are hosted in organic-rich mudstone and shale of the Mississippian Kuna Formation. A complex mineralization history is defined by four sphalerite types or stages: (1) early brown sphalerite, (2) yellow-brown sphalerite, (3) red-brown sphalerite, and (4) late tan sphalerite...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.410.5242 2023-05-15T15:46:59+02:00 ©2004 by Economic Geology Vol. 99, pp. 1509–1532 Textural, Compositional, and Sulfur Isotope Variations of Sulfide Minerals in the Red Dog Zn-Pb-Ag Deposits, Brooks Range, Alaska: Implications for Ore Formation K. D. Kelley D. L. Leach C. A. Johnson J. L. Clark J. F. Slack R. A. Ayuso W. I. Ridley The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.410.5242 http://home.cc.umanitoba.ca/~fayek/epapers/Fluid_rock/kelley2004.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.410.5242 http://home.cc.umanitoba.ca/~fayek/epapers/Fluid_rock/kelley2004.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://home.cc.umanitoba.ca/~fayek/epapers/Fluid_rock/kelley2004.pdf text ftciteseerx 2016-01-08T03:18:40Z The Red Dog Zn-Pb deposits are hosted in organic-rich mudstone and shale of the Mississippian Kuna Formation. A complex mineralization history is defined by four sphalerite types or stages: (1) early brown sphalerite, (2) yellow-brown sphalerite, (3) red-brown sphalerite, and (4) late tan sphalerite. Stages 2 and 3 constitute the main ore-forming event and are volumetrically the most important. Sulfides in stages 1 and 2 were deposited with barite, whereas stage 3 largely replaces barite. Distinct chemical differences exist among the different stages of sphalerite. From early brown sphalerite to later yellow-brown sphalerite and red-brown sphalerite, Fe and Co content generally increase and Mn and Tl content generally decrease. Early brown sphalerite contains no more than 1.9 wt percent Fe and 63 ppm Co, with high Mn (up to 37 ppm) and Tl (126 ppm), whereas yellow-brown sphalerite and red-brown sphalerite contain high Fe (up to 7.3 wt %) and Co (up to 382 ppm), and low Mn (<27 ppm) and Tl (<37 ppm). Late tan sphalerite has distinctly lower Fe (< 0.9 wt %) and higher Tl (up to 355 ppm), Mn (up to 177 ppm), and Ge (426 ppm), relative to earlier sphalerite. Wide ranges in concentrations of Ag, Cu, Pb, and Sb characterize all sphalerite types, particularly yellow-brown sphalerite and red-brown sphalerite, and most likely reflect submicroscopic inclusions of galena, chalcopyrite and/or tetrahedrite in the sphalerite. In situ ion microprobe sulfur isotope analyses show a progression from extremely Text Brooks Range Alaska Unknown Kuna ENVELOPE(33.500,33.500,67.900,67.900) |
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collection |
Unknown |
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ftciteseerx |
language |
English |
description |
The Red Dog Zn-Pb deposits are hosted in organic-rich mudstone and shale of the Mississippian Kuna Formation. A complex mineralization history is defined by four sphalerite types or stages: (1) early brown sphalerite, (2) yellow-brown sphalerite, (3) red-brown sphalerite, and (4) late tan sphalerite. Stages 2 and 3 constitute the main ore-forming event and are volumetrically the most important. Sulfides in stages 1 and 2 were deposited with barite, whereas stage 3 largely replaces barite. Distinct chemical differences exist among the different stages of sphalerite. From early brown sphalerite to later yellow-brown sphalerite and red-brown sphalerite, Fe and Co content generally increase and Mn and Tl content generally decrease. Early brown sphalerite contains no more than 1.9 wt percent Fe and 63 ppm Co, with high Mn (up to 37 ppm) and Tl (126 ppm), whereas yellow-brown sphalerite and red-brown sphalerite contain high Fe (up to 7.3 wt %) and Co (up to 382 ppm), and low Mn (<27 ppm) and Tl (<37 ppm). Late tan sphalerite has distinctly lower Fe (< 0.9 wt %) and higher Tl (up to 355 ppm), Mn (up to 177 ppm), and Ge (426 ppm), relative to earlier sphalerite. Wide ranges in concentrations of Ag, Cu, Pb, and Sb characterize all sphalerite types, particularly yellow-brown sphalerite and red-brown sphalerite, and most likely reflect submicroscopic inclusions of galena, chalcopyrite and/or tetrahedrite in the sphalerite. In situ ion microprobe sulfur isotope analyses show a progression from extremely |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
K. D. Kelley D. L. Leach C. A. Johnson J. L. Clark J. F. Slack R. A. Ayuso W. I. Ridley |
spellingShingle |
K. D. Kelley D. L. Leach C. A. Johnson J. L. Clark J. F. Slack R. A. Ayuso W. I. Ridley ©2004 by Economic Geology Vol. 99, pp. 1509–1532 Textural, Compositional, and Sulfur Isotope Variations of Sulfide Minerals in the Red Dog Zn-Pb-Ag Deposits, Brooks Range, Alaska: Implications for Ore Formation |
author_facet |
K. D. Kelley D. L. Leach C. A. Johnson J. L. Clark J. F. Slack R. A. Ayuso W. I. Ridley |
author_sort |
K. D. Kelley |
title |
©2004 by Economic Geology Vol. 99, pp. 1509–1532 Textural, Compositional, and Sulfur Isotope Variations of Sulfide Minerals in the Red Dog Zn-Pb-Ag Deposits, Brooks Range, Alaska: Implications for Ore Formation |
title_short |
©2004 by Economic Geology Vol. 99, pp. 1509–1532 Textural, Compositional, and Sulfur Isotope Variations of Sulfide Minerals in the Red Dog Zn-Pb-Ag Deposits, Brooks Range, Alaska: Implications for Ore Formation |
title_full |
©2004 by Economic Geology Vol. 99, pp. 1509–1532 Textural, Compositional, and Sulfur Isotope Variations of Sulfide Minerals in the Red Dog Zn-Pb-Ag Deposits, Brooks Range, Alaska: Implications for Ore Formation |
title_fullStr |
©2004 by Economic Geology Vol. 99, pp. 1509–1532 Textural, Compositional, and Sulfur Isotope Variations of Sulfide Minerals in the Red Dog Zn-Pb-Ag Deposits, Brooks Range, Alaska: Implications for Ore Formation |
title_full_unstemmed |
©2004 by Economic Geology Vol. 99, pp. 1509–1532 Textural, Compositional, and Sulfur Isotope Variations of Sulfide Minerals in the Red Dog Zn-Pb-Ag Deposits, Brooks Range, Alaska: Implications for Ore Formation |
title_sort |
©2004 by economic geology vol. 99, pp. 1509–1532 textural, compositional, and sulfur isotope variations of sulfide minerals in the red dog zn-pb-ag deposits, brooks range, alaska: implications for ore formation |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.410.5242 http://home.cc.umanitoba.ca/~fayek/epapers/Fluid_rock/kelley2004.pdf |
long_lat |
ENVELOPE(33.500,33.500,67.900,67.900) |
geographic |
Kuna |
geographic_facet |
Kuna |
genre |
Brooks Range Alaska |
genre_facet |
Brooks Range Alaska |
op_source |
http://home.cc.umanitoba.ca/~fayek/epapers/Fluid_rock/kelley2004.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.410.5242 http://home.cc.umanitoba.ca/~fayek/epapers/Fluid_rock/kelley2004.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766381800411627520 |