Mineral resources of the United States (1913) (14591057900)

Identifier: mineralresources19132unit (find matches)
Title: Mineral resources of the United States
Year: 1882 (1880s)
Authors: United States. Bureau of Mines Geological Survey (U.S.)
Subjects: Mines and mineral resources Mineral industries
Publisher: Washington : G.P.O.
Contributing Library: Boston Public Library
Digitizing Sponsor: Kahle/Austin Foundation and Omidyar Network

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es vary from very fine to coarsegrained, the medium to rather coarse grained varieties greatly pre-dominating. A favorable feature common to most of the granitesis their remarkably good rift and grain, which allows large blocks tobe spHt evenly with a minimum amomit of labor. Another featurewhich seems especially characteristic of California granites is thequantity of stone quarried from large residual bowlders, not only for > Folios Nos. 3, 5,11,15,17,18,31,37,39,41,43,51,66,and 138 of the GeoloRic Atlas of the United Statesdescribe the geologic distribution of thediflerent formations in the eastern half of California from Reddingsouthward to Mariposa. Folio No. 101 describes the geology around San Luis Obispo, and Folio No. 163the geology from Santa Cruz northward to Redwood. Much of the information on the building stones ofCaliforiiia has been taken from Bulletin No. 38 of the California State Mining Bureau (The structuraland industrial materials of California), by L. E. Auburv.
Text Appearing After Image:
>> ^:- STONE INDUSTBY. 1355 local but for more extensive use. These bowlders represent theremnants left from prolonged dismtegration of large granite masses,but after removal of a thin weathered coating, they yield sound stone. The most important quarry districts are in Madera, Placer, River-side, and San Diego counties. At Raymond, in Madera County, are two large quarries of biotitemuscovite granite which have furnished stone for the post office, theFairmont Hotel, the Mercantile Trust Co., and other buildings, and forthe Dewey and McKinley monuments in San Francisco. The princi-pal granites used in San Francisco are those from Raymond, Rocklin,and Pem-yn. Granite from the latter two localities, which are inPlacer County, may be seen in the State Capitol at Sacramento, andin the Hibernia Bank and the Crocker Building in San Francisco.Most of the 24 quarries at Rocklin are small, though the largest in1904 had a depth of 100 feet. They all are said to lie within an areanot more t

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