28 Quartz pyrite veins are exposed at several places on the Mucho Oro claim. Most of these strike north 20 to 50 degrees east and at least one is a diagonal striking south 70 degrees east. WINTRIP CLAIM The Wintrip claim is on lower Stouts gulch and adjoins the Mucho Oro claim on the southeast. The northwestern part of the claim is underlain by the Lowhee member and the southeastern part by the Rainbow member. Several narrow veins are exposed in the southeastern part of the claim and one larger vein that was explored in 1933 by the Britannia Mining and Smelting Company in an adit 350 feet long. In this adit a vein 6 inches to 3 feet wide has been followed for 80 feet. This vein strikes north 50 degrees east and dips steeply northwest. Another 3- foot vein striking south 80 degrees east and vertical was drifted on for 40 feet. Both veins are well mineralized with pyrite. A 3-foot quartz pyrite vein on the surface strikes south 80 degrees east and is vertical and may be the one of similar strike found underground. A large quartz- pyrite boulder 15 feet by 6 feet near the portal of the adit is presumably nearly in place and suggests that wider veins occur nearby. SHAMROCK GOLD MINES, LIMITED Several open-cuts and an adit were visited on ground explored in 1933 by the Shamrock Gold Mines, Limited. This ground consists of the Progress, Shamrock, and other claims northwest of Barkerville. The northeastern claims are underlain by the Barkerville formation and those to the southwest by the Baker member of the gold belt. The rocks of the Baker member where exposed along the B.C. ditch consist mainly of fissile, grey, calcareous quartzites and are intruded by two or more dykes or sills of quartz porphyry. Two bodies of quartz porphyry have been explored by open-cuts and contain much quartz in vein form. The quartz porphyry bodies appear to be dykes or sills striking east to south 70 degrees east. On the Progress No. 8 claim near its southern boundary a short adit and open-cut inadequately expose quartz-sulphide mineralization in quartz-porphyry. Large blocks of sulphide on the dump consist of galena, black sphalerite, and pyrite. This open-cut is presumably on the Home Rule ledge of old reports. About 500 feet east of this open-cut are three other openings, the upper on the N.M. No. 3 fraction and the other two in the southwestern corner of the Progress No. 7 claim. The one on the N.M. No. 3 fraction discloses a 2-foot quartz vein in grey schists. One of those on the Progress No. 7 claim is a short caved adit and the other is an open-cut 100 feet farther east. The open-cut exposes a quartz vein 3 feet wide. Blocks of sulphide consisting of pyrite, galena, and black sphalerite are seen on the dump. The massive sulphide is very similar to that seen elsewhere in the southern part of the gold belt replacing limestone. The vein exposed in this open-cut is presumably the Dooley ledge of old reports. About 700 feet farther east on the Progress No. 7 claim is another open-cut in limestone and grey schists. The limestone is partly replaced by pyrite. This cut is probably near the base of the Barkerville formation.