Magmatic-hydrothermal systems and associated magnetite-apatite-actinolite deposits, Echo Bay, Northwest Territories.
Magnetite-apatite-actinolite deposits occur as pervasive replacement, veins, pods and breccias within wall rocks to the plutons of the Mystery Island intrusive suite at Echo Bay, Northwest Territories. The plutons and their altered wall rocks host previously-mined pitchblende, native Ag, Ni-Co arsen...
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2009
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ndltd-uottawa.ca-oai-ruor.uottawa.ca-10393-75432018-01-05T19:04:49Z Magmatic-hydrothermal systems and associated magnetite-apatite-actinolite deposits, Echo Bay, Northwest Territories. Reardon, Nancy Catherine. Taylor, B. E., Geodesy. Magnetite-apatite-actinolite deposits occur as pervasive replacement, veins, pods and breccias within wall rocks to the plutons of the Mystery Island intrusive suite at Echo Bay, Northwest Territories. The plutons and their altered wall rocks host previously-mined pitchblende, native Ag, Ni-Co arsenide veins. Although numerous studies were carried out on the pitchblende, native Ag, Ni-Co arsenide veins, the origin of the altered rocks which host them remains uncertain. Overall, this study reveals that the formation of magnetite-apatite-actinolite veins, pervasive replacement of rocks by albite and magnetite-apatite-actinolite, and hydrothermal brecciation by magmatic fluids is consistent with geologic and isotopic data. Thus, it is inferred that these deposits formed by replacement in a hydrothermal system dominated by magmatic fluids exsolved by cooling epizonal plutons of the Mystery Island intrusive suite. (Abstract shortened by UMI.) 2009-03-23T15:59:29Z 2009-03-23T15:59:29Z 1992 1992 Thesis Source: Masters Abstracts International, Volume: 32-02, page: 0565. 9780315825475 http://hdl.handle.net/10393/7543 http://dx.doi.org/10.20381/ruor-6837 210 p. University of Ottawa (Canada) |
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Geodesy. Reardon, Nancy Catherine. Magmatic-hydrothermal systems and associated magnetite-apatite-actinolite deposits, Echo Bay, Northwest Territories. |
description |
Magnetite-apatite-actinolite deposits occur as pervasive replacement, veins, pods and breccias within wall rocks to the plutons of the Mystery Island intrusive suite at Echo Bay, Northwest Territories. The plutons and their altered wall rocks host previously-mined pitchblende, native Ag, Ni-Co arsenide veins. Although numerous studies were carried out on the pitchblende, native Ag, Ni-Co arsenide veins, the origin of the altered rocks which host them remains uncertain. Overall, this study reveals that the formation of magnetite-apatite-actinolite veins, pervasive replacement of rocks by albite and magnetite-apatite-actinolite, and hydrothermal brecciation by magmatic fluids is consistent with geologic and isotopic data. Thus, it is inferred that these deposits formed by replacement in a hydrothermal system dominated by magmatic fluids exsolved by cooling epizonal plutons of the Mystery Island intrusive suite. (Abstract shortened by UMI.) |
author2 |
Taylor, B. E., |
author_facet |
Taylor, B. E., Reardon, Nancy Catherine. |
author |
Reardon, Nancy Catherine. |
author_sort |
Reardon, Nancy Catherine. |
title |
Magmatic-hydrothermal systems and associated magnetite-apatite-actinolite deposits, Echo Bay, Northwest Territories. |
title_short |
Magmatic-hydrothermal systems and associated magnetite-apatite-actinolite deposits, Echo Bay, Northwest Territories. |
title_full |
Magmatic-hydrothermal systems and associated magnetite-apatite-actinolite deposits, Echo Bay, Northwest Territories. |
title_fullStr |
Magmatic-hydrothermal systems and associated magnetite-apatite-actinolite deposits, Echo Bay, Northwest Territories. |
title_full_unstemmed |
Magmatic-hydrothermal systems and associated magnetite-apatite-actinolite deposits, Echo Bay, Northwest Territories. |
title_sort |
magmatic-hydrothermal systems and associated magnetite-apatite-actinolite deposits, echo bay, northwest territories. |
publisher |
University of Ottawa (Canada) |
publishDate |
2009 |
url |
http://hdl.handle.net/10393/7543 http://dx.doi.org/10.20381/ruor-6837 |
work_keys_str_mv |
AT reardonnancycatherine magmatichydrothermalsystemsandassociatedmagnetiteapatiteactinolitedepositsechobaynorthwestterritories |
_version_ |
1718600149569110016 |