The quicksilver resources of California . NAPA COUNTY. 81 minerals as reported are: silicates and calcites, no iron pyritesor sulphur. Since this report was made some further explora-tion work had been done. A 20-ton Fitzgerald furnace hasbeen erected, but not used as yet. Manhattan Mine.—Knoxville District. Lake Mining Com-pany, owner; R. B. Knox, Knoxville, Napa County. In , T. II N., R. 4 W., and Sec. i, T. 11 N., R. 5 W. [See , U. S. G. S., page 282: Report State Mining Bureau ofCal., XI, pages 70-72; XII, page 363; XIII, page 598.] The. PHOTO No. 0. MAXH.\TTAX QlICKSILVER MIN
The quicksilver resources of California . NAPA COUNTY. 81 minerals as reported are: silicates and calcites, no iron pyritesor sulphur. Since this report was made some further explora-tion work had been done. A 20-ton Fitzgerald furnace hasbeen erected, but not used as yet. Manhattan Mine.—Knoxville District. Lake Mining Com-pany, owner; R. B. Knox, Knoxville, Napa County. In , T. II N., R. 4 W., and Sec. i, T. 11 N., R. 5 W. [See , U. S. G. S., page 282: Report State Mining Bureau ofCal., XI, pages 70-72; XII, page 363; XIII, page 598.] The. PHOTO No. 0. MAXH.\TTAX QlICKSILVER MINE. first work on this mine was performed at Johntown in 1863.[See Fig. 27.] As the ore was reduced at the Redington mineits product was credited to that property. Work was resumedin 1868 until 1877, then the mine was idle until 1884, but hasbeen in constant operation since that year. Total production,about 15,000 flasks. The study of this mine is especially interesting in regard tothe relation of igneous rock and the ore deposition. The oredeposits are found in a belt having a general northwestern 6—QR 82 QUICKSILVER KESOURCES OF CALIFORNIA. direction, lying between basalt to the northeast and serpentineto the southwest. The basalt does not show at the surface ina continuous line; the full red line on the plan of the minerepresents as nearly as possible the line of its vent. The ter-ritory between the basalt and the serpentine is almost entirelycovered b} tufa, except in the following places: At Johntown is a small exposure of the mudrock inwhi
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectminesandmineralresou
