Show simple item record Mare, Marius P. H. en_US 2012-05-23T21:01:53Z 2012-05-23T21:01:53Z 1988 en_US
dc.identifier ocm72732000 en_US
dc.description.abstract Five zones of alteration were studied in the Flin Flon area; the Mill-Rock Hill area, the Lakeview prospect, the Trout Portage zone, the Schist Lake-Mandy mine area, and the Cliff Lake fault zone. The alteration zones are small (<1 sq. km), patchy, and did not extend for long distances. The hydrothermal activity formed at least three types of alteration; silicification, sericitization and chloritization. The alteration products (quartz, chlorite, sericite and epidote) were foliated during metamorphism, and are therefore premetamorphic. Electron microprobe analysis of chlorites from altered zones indicate that hydrothermal alteration resulted in Mg-rich (Fe/Fe+Mg < 0.55) chlorite. Areas affected by metamorphic degassing/dewatering and dynamic metamorphism were more Fe-rich (Fe/Fe+Mg > 0.55) as a result of remobilization of iron. Mg-rich chlorites are interpreted to have formed as the result of interaction of Mg-bearing fluids with the host rock. Silicification is identified as the initial episode of hydrothermal alteration at the Trout Portage and Schist Lake-Mandy zones and is associated with the development of silica network veining. The second alteration phase was the development of sericite which resulted in an increase of K, Rb and Ba and a decrease of Ca and Sr. Sericitization was followed by chloritization which resulted in an enrichment of Mg > Fe, Zn, and H20 and depletion of K, Ba and Rb relative to less altered rocks. en_US
dc.format.extent vii, 113 leaves : en_US
dc.language en en_US
dc.rights en_US
dc.rights info:eu-repo/semantics/openAccess
dc.title Alteration zones in the Flin Flon area, Manitoba en_US
dc.type info:eu-repo/semantics/masterThesis Geological Sciences en_US

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