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Mineralogical and geochemical investigation of the cordierite-anthophyllite rocks at Star Lake, near Sherridon, Manitoba

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dc.contributor.author Leroux, Marc V. en_US
dc.date.accessioned 2012-05-23T21:02:07Z
dc.date.available 2012-05-23T21:02:07Z
dc.date.issued 1989 en_US
dc.identifier ocm72751300 en_US
dc.identifier.uri http://hdl.handle.net/1993/7189
dc.description.abstract The Sherridon Group, a stratigraphic unit of the Kisseynew gneiss belt, near Sherridon, Manitoba is typically dominated by quartz-rich gneisses. Discontinuous lenses of cordierite-anthophyllite rocks, the focus of the present study, occur within these quartz-biotite gneiss units. These cordierite-anthophyllite gneisses are extremely coarse-grained in places, and are spatially associated with barren (Star Lake) and sulfide-mineralized zones (Sherridon; Elken Lake). The present chemical composition of the Star Lake-Elken Lake gneisses indicates hydrothermal alteration of a basaltic progenitor producing chlorite-rich alteration pipes. This alteration involves a depletion in alkali and alkaline earth elements with an apparent enrichment in Al and Mg as a function of constant summation. These chemical modifications are the result of reactions between heated seawater and basaltic rocks of the crust. A modern analogue of the Sherridon Group environment might be the shelf and slope deposits of modern island arcs. en_US
dc.format.extent xiv, 177 [i.e. 202] leaves : en_US
dc.language en en_US
dc.rights en_US
dc.rights info:eu-repo/semantics/openAccess
dc.title Mineralogical and geochemical investigation of the cordierite-anthophyllite rocks at Star Lake, near Sherridon, Manitoba en_US
dc.type info:eu-repo/semantics/masterThesis
dc.type master thesis en_US
dc.degree.discipline Geological Sciences en_US


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