File:Annual report of the State Mineralogist for the year ending (1883) (14778176535).jpg

Identifier: annualreportofst10cali (find matches)
Title: Annual report of the State Mineralogist for the year ending ...
Year: 1883 (1880s)
Authors: California State Mining Bureau
Subjects: California State Mining Bureau Mines and mineral resources Gold mines and mining Geology Mineralogy
Publisher: Sacramento : California State Mining Bureau
Contributing Library: University of California, Davis Libraries
Digitizing Sponsor: University of California, Davis Libraries

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inches of water measured under a four-inch pressure arerequired to run both mill and hoisting works. Altitude, aneroid reading 765 feet. Course of vein North 75 degrees west. Dip of vein South 75 degrees. Average width of vein _. 3 feet. Character of foot wall Syenite. Character of hanging wall Talc schist. Length of ore shoot 1,200 feet. Vertical depth reached by workings 200 feet. Length of first level tunnel 1,400 feet. Length of second level 900 feet. Number of stamps 20. Weight of stamps 850 pounds. Drop in inches 5k Drops per minute 92. Duty of stamp in twenty-four hours 1; tons. Water used in battery 1; inches. Kind of screen No. 35 wire. Size of apron ... ... 4J by 12 feet. Kind of feeders used Hendy Challenge. Percentage of value saved in battery 60 per cent. Percentage of value saved on plates. 20 per cent. Percentage of value saved on concentrators 20 per cent. Kind of concentrators Woodberry. Percentage of sulphurets saved If per cent. 430 REPORT OF THE STATE MINERALOGIST.
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PLACER COUNTY. 431 Value of sulphurets per ton $230. Nature of sulphurets principally Galena and iron pyrites. Kind of power Water. Number of men employed in mine 22. Number of men employed in mill _ _4. Number of men employed on outside work 5. Wages of miners per day $2 50. Wages of millmen per day. $3. Wages of men on outside work _. $2 50. Amount of water used for power to run mill and hoisting works ..62 inches. Cost of water per inch, twentj^-four hours 12£ cents. Gold Blossom Mine. This mine is located about one and one half miles northwest of thetown of Ophir, on the north side of Auburn Ravine. The propertyincludes the Gold Blossom and Ohio Claims, covering about eighteenhundred feet of the Gold Blossom lode, and also a strong spur known asthe Marion lode. The Gold Blossom vein is two feet wide; the course is north 80 degreeswest, and dip about 85 degrees south. The foot wall is syenite, and thehanging wall diorite. (See plate showing workings.) The foot wall of Marion vein

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