Lithogeochemistry and geothermobarometry of mineralized cordierite-orthoamphibole and related rocks at Atik Lake, Manitoba, Nemiscau and Montauban, Quebec

Cordierite-orthoamphibole rocks associated with contrasting polymetallic mineralization occur in a wide range of metamorphic conditions in the Atik Lake, Manitoba, and Nemiscau and Montauban, Quebec, metamorphic terranes.;Lithogeochemistry and geothermobarometry investigations using whole rock major, trace and rare earth elements and mineral chemistries have established the chemical and physical changes that occurred during hydrothermal alteration and subsequent regional metamorphism. The Log(Ratio) method, utilizing ratio profiles of the immobile elements ;Detailed geothermobarometry and textural evidence indicate that cordierite-orthoamphibole rocks in the three terranes formed at peak P-T conditions of ;The partitioning of Fe-Mg between cordierite and anthophyllite was studied for use as a geobarometer. The partitioning coefficient (;High...