| Title | Alteration zones in the Wolverton Lake area, near Snow Lake, Manitoba |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Froese, E |
| Source | Geological Survey of Canada, Open File 7405, 2017, 14 pages, https://doi.org/10.4095/304270  Open Access |
| Image |  |
| Year | 2017 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| File format | pdf |
| Province | Manitoba |
| NTS | 63J/13NW |
| Area | Snow Lake; Wolverton Lake; Herbert Lake; Angus Bay |
| Lat/Long WENS | -100.0000 -99.9167 55.0000 54.9375 |
| Subjects | igneous and metamorphic petrology; bedrock geology; lithology; igneous rocks; felsic volcanic rocks; mafic volcanic rocks; intrusive rocks; granodiorites; metasedimentary rocks; metagreywackes;
metamorphic rocks; gneisses; sedimentary rocks; arenites; intrusions; metamorphism; alteration; mineral assemblages; biotite; sillimanite; almandine; sulphides; anomalies; iron; aluminum; magnesium; pressure-temperature conditions; Missi Group; Amisk
Group; Burntwood Group; Precambrian; Proterozoic |
| Illustrations | geoscientific sketch maps; graphs; phase diagrams |
| Program | Targeted Geoscience Initiative (TGI-5) Volcanic and sedimentary systems |
| Released | 2017 08 22 |
| Abstract | North of Snow Lake, Manitoba, volcanic rocks and granitic intrusions, older than 1.87 Ga, have been metamorphosed to a grade corresponding to the biotite-sillimanite-almandine zone. The volcanic rocks,
predominantly of felsic composition, include sulphide occurrences, as well as ferromagnesian and aluminous alteration, characterized, respectively, by orthoamphibole-bearing and sillimanite-bearing assemblages. The distribution of alteration types,
particularly in the Wolverton Lake area, is shown. |
| Summary | (Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI-4) is a collaborative federal geoscience program that provides industry with the next generation of geoscience
knowledge and innovative techniques to better detect buried mineral deposits, thereby reducing some of the risks of exploration. The paper presents an account of the metamorphic minerals and rock types found in a zone of alteration near a base metal
occurrence in the Wolverton Lake area of northern Manitoba. The rocks are nearly 1.9 billion years old and importantly appear to have been altered by mineralizing processes. The implication of the study is that more rocks that likely formed in the
type of environment hosting these rock types could be found. |
| GEOSCAN ID | 304270 |
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