Mineralogy and textural relationships of ores from the Whalesback Mine, northeastern Newfoundland
The Whalesback Mine is one of many copper deposits associated with Ordovician volcanic rocks in the Notre Dame Bay area, Newfoundland. The deposit consists of veins, pods, and disseminated sulfides localized within a highly chloritized shear zone cutting basaltic pillow lavas. Porphyritic dikes cut...
Published in: | Canadian Journal of Earth Sciences |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1968
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/e68-137 http://www.nrcresearchpress.com/doi/pdf/10.1139/e68-137 |
id |
crcansciencepubl:10.1139/e68-137 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/e68-137 2023-12-17T10:44:12+01:00 Mineralogy and textural relationships of ores from the Whalesback Mine, northeastern Newfoundland Kanehira, K. Bachinski, D. 1968 http://dx.doi.org/10.1139/e68-137 http://www.nrcresearchpress.com/doi/pdf/10.1139/e68-137 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 5, issue 6, page 1387-1395 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1968 crcansciencepubl https://doi.org/10.1139/e68-137 2023-11-19T13:38:46Z The Whalesback Mine is one of many copper deposits associated with Ordovician volcanic rocks in the Notre Dame Bay area, Newfoundland. The deposit consists of veins, pods, and disseminated sulfides localized within a highly chloritized shear zone cutting basaltic pillow lavas. Porphyritic dikes cut the shear zone, sulfide deposit, and the surrounding pillow lavas; all of the rocks, including the sulfide-rich rocks, have been regionally metamorphosed. Ore minerals, in decreasing order of abundance, include pyrite, chalcopyrite, pyrrhotite, sphalerite, mackinawite, pentlandite, magnetite, cubanite, galena, and ilmenite. Marcasite, covellite, and goethite are supergene minerals. Chlorite and quartz are the predominant gangue minerals. Muscovite, carbonates, sphene, albite, and epidote are minor constituents. Banding and streaking of sulfides in massive ores, crushed pyrite, and the local occurrence of pressure-shadow phenomena in the ore are indicative of shearing stress post-dating original sulfide ore formation. Present sulfide assemblages are compatible with relatively low temperatures and are the result of re-equilibration and internal reaction among the sulfides with decreasing temperature. Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Notre Dame Bay ENVELOPE(-54.998,-54.998,49.750,49.750) Canadian Journal of Earth Sciences 5 6 1387 1395 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Kanehira, K. Bachinski, D. Mineralogy and textural relationships of ores from the Whalesback Mine, northeastern Newfoundland |
topic_facet |
General Earth and Planetary Sciences |
description |
The Whalesback Mine is one of many copper deposits associated with Ordovician volcanic rocks in the Notre Dame Bay area, Newfoundland. The deposit consists of veins, pods, and disseminated sulfides localized within a highly chloritized shear zone cutting basaltic pillow lavas. Porphyritic dikes cut the shear zone, sulfide deposit, and the surrounding pillow lavas; all of the rocks, including the sulfide-rich rocks, have been regionally metamorphosed. Ore minerals, in decreasing order of abundance, include pyrite, chalcopyrite, pyrrhotite, sphalerite, mackinawite, pentlandite, magnetite, cubanite, galena, and ilmenite. Marcasite, covellite, and goethite are supergene minerals. Chlorite and quartz are the predominant gangue minerals. Muscovite, carbonates, sphene, albite, and epidote are minor constituents. Banding and streaking of sulfides in massive ores, crushed pyrite, and the local occurrence of pressure-shadow phenomena in the ore are indicative of shearing stress post-dating original sulfide ore formation. Present sulfide assemblages are compatible with relatively low temperatures and are the result of re-equilibration and internal reaction among the sulfides with decreasing temperature. |
format |
Article in Journal/Newspaper |
author |
Kanehira, K. Bachinski, D. |
author_facet |
Kanehira, K. Bachinski, D. |
author_sort |
Kanehira, K. |
title |
Mineralogy and textural relationships of ores from the Whalesback Mine, northeastern Newfoundland |
title_short |
Mineralogy and textural relationships of ores from the Whalesback Mine, northeastern Newfoundland |
title_full |
Mineralogy and textural relationships of ores from the Whalesback Mine, northeastern Newfoundland |
title_fullStr |
Mineralogy and textural relationships of ores from the Whalesback Mine, northeastern Newfoundland |
title_full_unstemmed |
Mineralogy and textural relationships of ores from the Whalesback Mine, northeastern Newfoundland |
title_sort |
mineralogy and textural relationships of ores from the whalesback mine, northeastern newfoundland |
publisher |
Canadian Science Publishing |
publishDate |
1968 |
url |
http://dx.doi.org/10.1139/e68-137 http://www.nrcresearchpress.com/doi/pdf/10.1139/e68-137 |
long_lat |
ENVELOPE(-54.998,-54.998,49.750,49.750) |
geographic |
Notre Dame Bay |
geographic_facet |
Notre Dame Bay |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Earth Sciences volume 5, issue 6, page 1387-1395 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e68-137 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
5 |
container_issue |
6 |
container_start_page |
1387 |
op_container_end_page |
1395 |
_version_ |
1785561401215942656 |