Economic Geology Surel Occurrence (20) A traverse up the stream that enters Surel Lake on the south side about 2 miles from the outlet encountered some narrow quartz veins mineralized with pyrite, sphalerite, molybdenite, and chalcopyrite. The veins are about 3 inches wide. An assay of a selected sample yielded: lead, trace; zinc, 9.92 per cent; copper, 0.08 per cent; gold 0.02 ounce, and silver 0.64 ounce a ton. Gold Deposits Gold is present in most of the mineral occurrences in the area and has been reported particularly from narrow quartz veins on Sibola and Huckle- berry Mountains and from the veins on Chikamin Range. The main occur- rences however are the wide quartz veins on the property of Deer Horn Mines Limited and the Smith-Nash group west of Sandifer Lake. Deer Horn Mines Limited (17) References: B.C. Minister of Mines, Ann. Repts.: 1944, pp. 175-177; 1945, pp. 71-72; 1952, p. 98; 1953, p. 94; 1954, pp. 95-96; 1955, pp. 25-27; Western Miner, vol. 26, No. 8, p. 94. This property of twenty-eight claims and one fraction was held by the Harrison brothers of Wistaria until 1951 when it was taken over by Deer Horn Mines Limited. The property lies on the southeastern slope of Lindquist Peak, astride the contact between the main mass of Coast Intrusions and the metamorphosed Hazelton group rocks. A wide quartz vein outcrops in the batholithic rocks near the contact and dips gently northward towards the sedimentary and volcanic rocks of the Hazelton group. This quartz vein, though displaced by north-trending faults, may be followed westward across the property for about 2,600 feet. Metallic minerals in the vein are mainly pyrite, galena, sphalerite, chalcopyrite, and telluride minerals, hessite and altaite. Gold is rarely present in the free state and only as a residual mineral in cavities and veinlets; it is most commonly intimately associated with hessite and may be present as rare disseminations in other minerals such as pyrite (Warren, 1947). Pioneer Gold Mines Limited developed these claims from 1944 to 1946. A good pack-trail was built from the head of Whitesail Lake to the property, and camps were established both at Whitesail Lake and at timber-line below 93