PAGE 



Table of formations 84 



Carboniferous 84 



Triassic 85 



Jurassic 85 



Monzonite 85 



Diorite porphyrite 86 



Porphyritic monzonite 87 



Post-Jurassic 87 



Tertiary 88 



Ore deposits 88 



Gangue 89 



Ore 89 



Lodes 90 



Ore shoots 90 



Origin 91 



Geology of the region between Castlegar and 



Revelstoke 92 



The Arrow lakes 92 



General geology 94 



Annotated guide 95 



Slocan silver-lead district 96 



Annotated guide 96 



Silver-lead and zinc deposits 97 



General geology 98 



Veins 98 



Ore shoots 99 



Mineral composition 99 



Origin lOO 



Annotated guide (continued) 100 



References loi 



The Similkameen District 



by Charles Camsell. 



Introduction 102 



Annotated guide, Midway to Hedley 103 



Geology of the region about Hedley 108 



General desciiption 108 



Physiography 108 



Geology 109 



Particular descriptions no 



Roof contact of granodiorite batholith no 



Interior plateau 112 



Nickel Plate mine 114 



Industrial notes 115 



