. The copper resources of California. rty is developed by 520 feet of tunnels, shafts, etc., show-ing a deposit of sulphide ore 8 to 12 feet thick, which has beenfollowed laterally for a distance of 100 feet. The ores arepyrrhotite and chalcopyrite, some of which carry a goodpercentage of copper. Assays have shown reported valuesranging from 8 to 20 per cent copper. Bunnell Group.—Comprises a number of claims situatednear the head of Dutch Creek, adjoining the Bonanza group,and containing similar ores. They are owned by the BunnellBrothers, of Gottville. They have been developed but little. Un
. The copper resources of California. rty is developed by 520 feet of tunnels, shafts, etc., show-ing a deposit of sulphide ore 8 to 12 feet thick, which has beenfollowed laterally for a distance of 100 feet. The ores arepyrrhotite and chalcopyrite, some of which carry a goodpercentage of copper. Assays have shown reported valuesranging from 8 to 20 per cent copper. Bunnell Group.—Comprises a number of claims situatednear the head of Dutch Creek, adjoining the Bonanza group,and containing similar ores. They are owned by the BunnellBrothers, of Gottville. They have been developed but little. Unexpected Group.—Two claims in Sec. 17, T. 47 X.,R. S \V.; owned by Ponnay Brothers et al., of Portland, claims join the Bonanza and Bunnell groups, and con- 108 THE COPPER RESOURCES OF CALIFORNIA. tain ores of the same character. They are at present developedonly by short tunnels and open cuts. The deposits of the three preceding groups are mainlycontained in a crystalline (hornblendic) schist, associated Blue Ledge Group.—Twenty-three claims, owned by L. , Wni. H. Hamilton, and others, of Crescent City. Theproperty is developed by over 200 feet of tunnels and someopen cuts. The formation is a crystalline schist, silicious and SISKIYOr COrNTY—COIPKR CLAIMS. 109 chloritic in character, with a steep inclination to the west. Itis associated with basic eruptive rocks. A large body of sul-phide ore has been struck upon this property, one tunnelhaving penetrated the solid ore for a distance of more than lOOfeet, with cross-cuts showing a width of 40 feet or more. Theore bears pyrite, chalcopyrite, and other sulphides and oxidesof iron and copper. It carries a small percentage of zincblende and some (luartz. The average value of the ore isreported above 6 per cent, while some assays have shown veryhigh-grade results. vSamples have shown a reported value ingokl and silver of more than $5 per ton. The apparent oppor-tunities for finding other sh
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