161 The rocks on the property are argillaceous sediments cut by the belt of dykes. The mineral deposits are veins and replacements. A silicified area several hundred feet across is mineralized with pyrite, pyrrhotite, chalcopyrite, galena, and sphalerite. Several adits show mineralized rock similar to that on the surface. Southwest of the silicified area several narrow quartz veins have been followed by adits. The veins are mineralized with pyrite, galena, sphalerite, and tetrahedrite. One vein is mineralized chiefly with arsenopyrite. The most promising vein strikes north, is 4 feet wide, and has been traced for several hundred feet. It has been explored by two adits. The mineralization on the group is of the silver-lead type with local good values in gold. Payroll Group (Locality 44) References; Annual Report of the Minister of Mines, British Columbia, 1918 and 1919. The Payroll group of claims is on Big Missouri ridge and adjoins and lies north of the holdings of the Indian Mines Corporation, Limited. A northerly striking and easterly dipping quartz vein has been traced for 1,000 feet. In places quartz and brecciated argillite make up a width of 12 feet, but in general the vein is narrower. The vein is mineralized with pyrite, galena, and sphalerite. Pioneer Group (Locality 1) References: Annual Report of the Minister of Mines, British Columbia, 1927 and 1930. The Pioneer group of claims is on the west side of Tide Lake flats about 10 miles north of the Big Missouri group. The ground is underlain by light-coloured altered rocks that probably are calcareous tuffs and tuffaceous sediments. The rocks strike north to northeast and have steep dips mainly to the west. They are rather strongly sheared in a northerly direction across a width of 2,000 feet or more. The rocks contain dis- seminated pyrite and locally hold seams of quartz with galena, sphalerite, tetrahedrite, silver minerals, and native gold. Premier Border Mining Company, Limited (Locality 47) References: Annual Report of the Minister of Mines, British Columbia, 1919, 1927, 1928, 1929, and 1930. The holdings of the Premier Border Mining Company consist of the Northern Light group of claims lying east of Cascade creek and west of the holdings of the B.C. Silver Corporation. Several silicified zones in porphyry outcrop and one or more hold low values in gold and silver. The latest exploratory work is an adit at an elevation of 1,100 feet and 1,650 feet long in a southeasterly direction. The adit ends about 200 feet away from B.C. Silver Corporation ground. The adit to a point 800 feet from the portal penetrates porphyry similar to that at the Premier mine, beyond this point it lies in greenstones or tuffs. A few, narrow, silicified bands in the porphyry may carry low values. A narrow galena-bearing vein outcrops near the portal.