Geological Survey of Canada, Current Research (Online) no. 2000-C1
- ISBN-10
- 0660180200
- ISBN-13
- 9780660180205
- Category
- Igneous rocks
- Pages
- 13
- Language
- English
- Published
- 2000
- Publisher
- Natural Resources Canada
Description
A distinctive group of giant quartz veins characterizes the Great Bear magmatic zone east of Great Bear Lake, Northwest Territories. They are topographically conspicuous, have attracted attention from mineral prospectors, and contain occurrences of uranium, copper sulphides, and other minerals. This paper presents results of the first study of fluid inclusions from giant quartz veins in this zone. Samples were studied from the Crowfoot and Ted uranium occurrences. It begins with descriptions of the regional geological setting, the quartz veins and associated stockworks, and the two occurrences studied. It then describes the fluid inclusion study methodology, petrographic observations, and temperature & salinity determinations of the fluid inclusion samples. The results are discussed with respect to the multi-stage developmental history of the quartz veins.
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