Characterization Of Pyrite From Gold Deposits
Pyrite associated with gold deposits has been characterized on the basis of morphology, optical and chemical microstructures, and minor and trace element geochemistry. Gold deposits studied include: Agnico-Eagle mine (Quebec), Fairview mine (South Africa), Bousquet mine (Quebec), Williams mine (Onta...
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ftunivwestonta:oai:ir.lib.uwo.ca:digitizedtheses-2937 2023-10-01T03:57:38+02:00 Characterization Of Pyrite From Gold Deposits MacLean, Peter John 1991-01-01T08:00:00Z application/pdf https://ir.lib.uwo.ca/digitizedtheses/1938 https://ir.lib.uwo.ca/context/digitizedtheses/article/2937/viewcontent/NN64243.PDF unknown Scholarship@Western https://ir.lib.uwo.ca/digitizedtheses/1938 https://ir.lib.uwo.ca/context/digitizedtheses/article/2937/viewcontent/NN64243.PDF Digitized Theses Geology text 1991 ftunivwestonta 2023-09-03T07:20:19Z Pyrite associated with gold deposits has been characterized on the basis of morphology, optical and chemical microstructures, and minor and trace element geochemistry. Gold deposits studied include: Agnico-Eagle mine (Quebec), Fairview mine (South Africa), Bousquet mine (Quebec), Williams mine (Ontario), Dome mine (Ontario), Pistol Lake prospect (Northwest Territories), Freddies Consolidated mine (South Africa), Pilgrim's Rest Gold Field (South Africa), and Clontibret prospect (Ireland). Pyrite from Buchans (Newfoundland), Kosaka (Japan), Axial Seamount and Explorer Ridge volcanogenic massive sulphide bodies are included in the study. Colour-staining of polished surfaces of pyrite with a potassium permanganate solution enhances internal microstructures and facilitates detailed examination of pyrite morphologies. The minor element content of gold-bearing arsenian pyrite was determined by electron microprobe, and trace gold distributions were determined by ion-mapping by SIMS.;Pyrite from strata-bound-stratiform gold deposits and massive sulphide deposits contains up to 8 wt. % arsenic in oscillatory growth zones. The amount of arsenic varies from zone to zone and this correlates well with the colour variations of stained polished sections. White-blue zones are enriched in arsenic, brown-yellow zones contain negligible amounts of arsenic. Oscillatory growth zones enriched in arsenic indicate a complex crystallization history of episodic flow of hydrothermal fluids. Arsenic substitutes for sulphur in the pyrite structure. Gold is concentrated in the arsenic-rich growth zones and absent from the arsenic-poor zones. Cobalt, copper, and nickel are present in trace amounts only. Pyrite from the Bousquet and Williams mines and Pistol Lake prospect contains no arsenic and negligible cobalt, copper and nickel. Pyrite from modern massive sulphide deposits also contains negligible arsenic, cobalt, copper, and nickel.;The typical microstructure of arsenian pyrite with a framboidal and/or sector-zoned core surrounded by ... Text Newfoundland Northwest Territories The University of Western Ontario: Scholarship@Western Fairview ENVELOPE(-118.386,-118.386,56.067,56.067) Northwest Territories |
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The University of Western Ontario: Scholarship@Western |
op_collection_id |
ftunivwestonta |
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unknown |
topic |
Geology |
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Geology MacLean, Peter John Characterization Of Pyrite From Gold Deposits |
topic_facet |
Geology |
description |
Pyrite associated with gold deposits has been characterized on the basis of morphology, optical and chemical microstructures, and minor and trace element geochemistry. Gold deposits studied include: Agnico-Eagle mine (Quebec), Fairview mine (South Africa), Bousquet mine (Quebec), Williams mine (Ontario), Dome mine (Ontario), Pistol Lake prospect (Northwest Territories), Freddies Consolidated mine (South Africa), Pilgrim's Rest Gold Field (South Africa), and Clontibret prospect (Ireland). Pyrite from Buchans (Newfoundland), Kosaka (Japan), Axial Seamount and Explorer Ridge volcanogenic massive sulphide bodies are included in the study. Colour-staining of polished surfaces of pyrite with a potassium permanganate solution enhances internal microstructures and facilitates detailed examination of pyrite morphologies. The minor element content of gold-bearing arsenian pyrite was determined by electron microprobe, and trace gold distributions were determined by ion-mapping by SIMS.;Pyrite from strata-bound-stratiform gold deposits and massive sulphide deposits contains up to 8 wt. % arsenic in oscillatory growth zones. The amount of arsenic varies from zone to zone and this correlates well with the colour variations of stained polished sections. White-blue zones are enriched in arsenic, brown-yellow zones contain negligible amounts of arsenic. Oscillatory growth zones enriched in arsenic indicate a complex crystallization history of episodic flow of hydrothermal fluids. Arsenic substitutes for sulphur in the pyrite structure. Gold is concentrated in the arsenic-rich growth zones and absent from the arsenic-poor zones. Cobalt, copper, and nickel are present in trace amounts only. Pyrite from the Bousquet and Williams mines and Pistol Lake prospect contains no arsenic and negligible cobalt, copper and nickel. Pyrite from modern massive sulphide deposits also contains negligible arsenic, cobalt, copper, and nickel.;The typical microstructure of arsenian pyrite with a framboidal and/or sector-zoned core surrounded by ... |
format |
Text |
author |
MacLean, Peter John |
author_facet |
MacLean, Peter John |
author_sort |
MacLean, Peter John |
title |
Characterization Of Pyrite From Gold Deposits |
title_short |
Characterization Of Pyrite From Gold Deposits |
title_full |
Characterization Of Pyrite From Gold Deposits |
title_fullStr |
Characterization Of Pyrite From Gold Deposits |
title_full_unstemmed |
Characterization Of Pyrite From Gold Deposits |
title_sort |
characterization of pyrite from gold deposits |
publisher |
Scholarship@Western |
publishDate |
1991 |
url |
https://ir.lib.uwo.ca/digitizedtheses/1938 https://ir.lib.uwo.ca/context/digitizedtheses/article/2937/viewcontent/NN64243.PDF |
long_lat |
ENVELOPE(-118.386,-118.386,56.067,56.067) |
geographic |
Fairview Northwest Territories |
geographic_facet |
Fairview Northwest Territories |
genre |
Newfoundland Northwest Territories |
genre_facet |
Newfoundland Northwest Territories |
op_source |
Digitized Theses |
op_relation |
https://ir.lib.uwo.ca/digitizedtheses/1938 https://ir.lib.uwo.ca/context/digitizedtheses/article/2937/viewcontent/NN64243.PDF |
_version_ |
1778529501618110464 |