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Mineral Exploration and Mining Activities
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argillite Badgeley Island Bar River Bar River Formation Batholith Bay of Islands Bay-Bay of Islands bedding biotite Bruce Formation Canada chlorite conglomerate crossbeds deformation deposits diabase diabase dikes diamond-drill District of Sudbury Division of Mines Dunlop Township east-west Eldorado Township epidote Espanola Formation faults feet feldspar feldspathic felsic ﬁeld ﬁne-grained fold foliations gabbro Geol Geological glacial Gowganda Gowganda Formation Grenville Front Zone Grenville Province greywacke Huronian Huronian rocks interbedded intrusions Killarney Batholith Killarney granite Langmuir Township Lorrain Formation mafic magnetic susceptibility mainly Manitoulin Island map-area Matinenda matrix McGregor Bay McGregor Bay-Bay metamorphism metasediments metavolcanics mile minerals Mines Limited Mississagi Formation muscovite Nipissing Diabase occur Ontario Ontario Dept Ontario Division orthoquartzite Paleozoic pebbles pelitic percent Photo plagioclase Precambrian protoquartzite quarry quartz quartzite rock fragments samples sandstone scale 1 inch sedimentary rocks sequence Serpent Formation Shakespeare Township Sheguiandah siltstone sphene structures sulphide thick ultramafic volcanic rocks