Bulletin, Issue 76 |
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30 tons Active Arroyo Mocho assay average belt Bldg Calaveras Callahan cañon carloads chert chrome Chrome Company chromic oxide chromite chromite occurs claims Coast Range concentrating County Cr₂O Creek Crescent City developed district Dorado dump elevation exposed feet Franciscan French Hill hauled high grade Idle indicates production Latrobe lease lens lenses lessee located low grade Luis Obispo San manganese oxides Mendocino Mendocino County miles by road miles east miles northeast miles west mill mined Mineral Mountain Nevada Noble Electric Steel northwest Obispo San Luis open cut orebody outcrop owner peridotite Photo Placer psilomelane pyrolusite railroad Ranch Deposit Red Bluff reported ridge rock San Francisco San Luis Obispo Santa Clara serpentine shaft Shasta shipment showing silica SiO2 Siskiyou Siskiyou County slope southeast southwest Stanislaus stope strike stringers surface tonnage Trinity County trucks tunnel Tuolumne Undeveloped Union Chrome Valley vein wide width Winship Yreka
Popular passages
Page 243 - Mines and Mineral Resources. Los Angeles, Orange and Riverside Counties — Frederick J. II. Merrill. 1917 .50 Mines and Mineral Resources, Monterey, San Benito, San Luis Obispo, Santa Barbara and Ventura Counties — Walter W.
Page 20 - California, and the contributing properties are scattered from one end of the state to the other. The company develops many properties and also buys ores from producers.
Page 25 - Mocho. The workings consist of a cut and several short tunnels. The country rock is jasper, thin layered and separated by seams of shale. The jasper layers differ in thickness from a fraction of an inch to several feet. The same layer varies in thickness, pinching out locally In many places. Most of the shale seams are thin. Both shale and jasper are greenish gray except where stained red or black by iron or manganese. The dip of the layers is about 35° W., the strike being a little east of north....
Page 101 - From that time until 1827 the Urals, in the region of Ekaterinburg, supplied the chromium used in Europe. In the summer of 1827, as the historian advises us, Isaac Tyson, Jr., saw in a Baltimore market-place a cart containing a cider barrel, which was held from rolling about by some heavy black stones.
Page 76 - ... manganese claims, owned by the California Manganese Mining Company of San Francisco, Howard A. Broughton, president, are on the border of Santa Clara and Stanislaus counties, about 40 miles southeast of Livermore. There are eight claims in the group, but the principal deposits occur on four of them. The southern part of the area covered by the claims is greenish-gray sandstone of the Franciscan formation ; the northern part is a mixture of jasper and fine shale interbedded. This jasper area is...
Page 98 - ... Corp.), Lynchburg, Va. be Delaware River Steel Co., Chester, Pa. abc WH Denison, Cushman, Ark. b Electric Reduction Co., Washington, Pa. b Empire Steel & Iron Co., Catasauqua, Pa. b Fuller & Warren Co., Troy, NY ab Robert Gilchrist, 82 Beaver St., New York City. b Goldschmidt Thermit Co., New York, NY a Charles Hardy, 50 Church St., New York, NY a Harshaw, Fuller & Goodwin Co., Electric Bldg., Cleveland, Ohio. a Hazel-Atlas Glass Co., Clarksburg, W. Va. c WP Heath & Co., 509 Olive St., St. Louis,...
Page 98 - Philadelphia, Pa. (or Dunbar, Pa.) be American Steel Foundries, McCormick Bldg., Chicago, 111. a Anglo-American Flash Light Co., Pittsburgh, Pa. c James B. Bailey, Pine Forge, Pa. b Beckman & Linden Engineering Corp., Bay Point, Cal. ab Bennett-Brooks, 120 Liberty St., New York, NY ab Berkshire Iron Wks., Bullitt Bldg., Philadelphia, Pa. be Bethlchem Steel Corp., South Bethlchem, Pa.
Page 76 - The jasper-shale formation consists of beds and lenses of jasper interbedded with fine shale. The jasper may be thin bedded or very heavy bedded, in the latter case forming prominent outcrops. The beds generally strike in the direction of the main jasper belt, but the dips are exceedingly irregular. The manganese ore occurs along heavy jasper beds as large masses replacing it, as veins, or merely as stains and...
Page 76 - ... the latter case forming prominent outcrops. The beds generally strike in the direction of the main jasper belt, but the dips are exceedingly irregular. The manganese ore occurs along heavy jasper beds as large masses replacing it, as veins, or merely as stains and partial replacements along cracks. The principal deposits — that is, those at the southeast end — are found along two or three prominent jasper beds 300 to 500 yards long, which are nearly parallel and 50 to 200 feet apart, separated...
Page 224 - American Refractories Co Pittsburgh, Pa., and Merchants National Bank Bldg., San Francisco Binney & Smith 81 Fulton St., New York, NY California Chrome Co Kohl Bldg., San Francisco Carnegie Steel Co Pittsburgh, Pa.