92

On this property narrow streaks of free gold occur in a silicified shear zone a few feet wide. The shear zone traverses voleanic rocks with a northerly strike and westerly dip. The extent of the zone has not been determined.

Georgia Bay Group (Locality 117) Reference: Annual Report of the Minister of Mines, British Columbia, 1929.

The Georgia Bay group is at the head of Hastings arm. It adjoins and lies north of the Elkhorn group. Two silicified zones were discovered in 1929 but have not been developed.

Georgia River Gold Mines, Limited (Locality 113)

References: Annual Report of the Minister of Mines, British Columbia, 1911, 1912, 1914, 1915, 1916, 1917, 1918, 1922, 1923, 1924, 1928, 1929, 1930, and 1982.

The holdings of Georgia River Gold Mines, Limited, are at an eleva- tion of about 3,500 feet on the west side of Georgia river about 10 miles from its mouth.

The country rock on the property consists mainly of fine-grained andesitic rocks and probably tuffaceous sediments locally strongly sheared. A short distance north sediments are the prevailing rocks, whereas southward crystalline voleanic types predominate. Granitic and lamprophyre dykes are common,

There are many gold-bearing quartz veins on the property, but the extensive development has been confined almost entirely to two of these veins and to two quartzose bodies, known as the Main vein. The two bodies known as the Main vein are up to 20 feet wide and each has been traced for about 400 feet. They strike northerly and towards one another but are separated by a distance of 700 feet in which vein matter has not been found. Each body consists of country rock ribboned with quartz gashes and veinlets lying parallel to the strike of the body. They are very sparsely mineralized.

The two veins on which extensive work has been done are named, respectively, the Bullion and Southwest veins. Each is up to 24 feet wide, strikes north, and has been traced for 1,000 feet or more. The Southwest vein lies about 200 feet west of the Bullion vein. The South- west vein extends north to the northern part of the Main vein and prob- ably intersects it. The Bullion vein crosses the gap between the two parts of the Main vein. Both the Bullion and Southwest veins are locally well mineralized with pyrite, pyrrhotite, arsenopyrite, galena, and sphaler- ite. Native gold is plentiful locally and specimens have assayed several ounces of gold a ton. The veins pinch and swell and in places disappear, but the fractures continue as narrow shear zones. The highest of the five adits is at an elevation of 3,665 feet, the lowest is 500 feet below it. Three short adits aggregating 400 or 500 feet in length have been driven to develop the Southwest vein. Two long adits aggregating about 2,500 feet in length have been driven to develop the Bullion vein.