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SPACE RELATIONS OF MINERAL DEPOSITS
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abundant albite alteration anorthosite bands basic batholithic beds biotite bodies Bureau of Mines calcite Canadian shield carbonate cent chalcopyrite character chlorite cleavage Cobalt series colloidal commonly composition conglomerate constituents contain copper crystals Dept developed diabase diabase dykes differentiation diorite Econ fault feet feldspar folds formed fractures gabbro galena geological gneiss gold granite graphite greenstone Grenville greywacke igneous rocks ilmenite intrusive iron formation Keewatin rocks Keweenawan Kirkland lake lamprophyre later lavas lenses limestone liquid magma magnetite mass material metallic metamorphic miles mineral deposits nickel norite occur Ontario original orthoclase oxides parallel pegmatite places planes porphyry Pre-Cambrian pressure probably production pyrite pyrrhotite quartzite Quebec relations replacement Rept result schistose schists sedimentary sediments sericite shear silicates sill silver slate solutions sphalerite stress structure sub-province Sudbury sulphides surface Surv syenite temperature texture Timiskaming township types U.S. Geol veins volcanic wall rocks width zone