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Show 49 tiferous galena, chloride of silver in clay and gypsum, copper glance, malachite, stephanite, stromeyerite, ruby silver, native silver in leaf-form, gray copper, chalcopyrite, and pyrite in cubes and pentagonal dodecahedrons. The base metals are lead and copper. Water- level is reached at a depth of 30 feet, and marks a richer grade of ore. The examination of 1874 included 10 mines. West Virginia, siliceous and clayey deposit, containing carbonates of copper, galena, chloride of silver, and manganese. Humboldt, same character of ore; dip of strata, 75° south- southwest. Pocahontas, same character of ore, with gypsum- spar, iron, and copper pyrites, galena, carbonate of lead, and chloride of silver. Dei Norte, crevice, 2 feet in width. Leviathan, crevice, 11 feet. Chieftain, crevice, 3£ feet. Pioneer, shaft, 70 feet. Minnesota, gypsum- spar and clay, with chloride of silver, pyrites of iron, and galena; assay, $ 60. Pelican, crevice, 8 feet; assay, $ 60; dip, 72°. Senator, strike, east and west; dip, 44°; vein, 3 to 8 feet wide; wall-rock, porphyritic trachyte; ore, principally galena in quartzite ; assay, from $ 25 to $ 1,200 per ton ; resembles a true tissure- vein. In 1875, the assay of the Pocahontas was reported to be 220 ounces; of the Virginia, 228 ounces. Between March and November, 1875, $ 50,000 were expended on the Pocahontas, and $ 120,000 extracted. The reduction- works began operations in July, 1875. There is one mill with a Dodge crusher and four or five- pans; capacity, four tons per day. The amalgam is strained cold. The cost of a 10 stamp mill would be $ 30,000. Other expenses will average as follows : Mining the ore per ton, $ 10; reducing, $ 40; mining labor per diem, $ 3; milling labor, $ 3; running a tunnel on main vein per foot, $ 8; sinking a shaft, $ 7.50; running a drift, $ 3.50. There are poor facilities for fanning, but in the Wet Mountain Valley, seven miles distant, there is good grazing country, supporting 25,000 cattle. Hay is worth $ 20 per ton; grain, 4 cents per pound. There is an abundance of wood and water, and coal within twenty miles. The inhabitants number about 1,000. Plenty of game is found, including the deer, bear, mountain- sheep, grouse, turkey, prairie- chicken, duck, fox, beaver, mink, wolf, and badger. TANAMTNT DISTRICT, CALIFORNIA. Examined by Dr. 0. Loeto, October, 1875. This district is situated in the Panamint range of mountains, between Death Valley and Panamint Valley. Its croppiugs cover an area of about 6 square miles. The ledges traverse the main range, occurring chiefly on the western slope, upon which there are but few spurs aud foot hills. The post- office of the district is Panamint. It is connected with the* railway at Caliente by a stage- road via Shepperd's Canon and Indian Wells. The distance is 160 miles; fare, about $ 40. The cost of freight from San Francisco, via Caliente, from which point wagons run, is 5 cents per pound. The completion of the Independence Railroad will reduce the cost of transportation. The roads to the mines, upon the mountain- slopes, are very good, but the routes to Caliente and Darwin lead through deep sand. The lodes are confined to the higher portions of the range. Their di- |