Appendix to the Journals of the Senate and Assembly of the session of the Legislature of the State of California (1929) (14784784115)

Identifier: appendixtojourna19294cali (find matches)

Title: Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California

Year: 1853 (1850s)

Authors: California. Legislature

Subjects: Legislative journals

Publisher: Sacramento : State Printing

Contributing Library: San Francisco Public Library

Digitizing Sponsor: San Francisco Public Library

Text Appearing Before Image:

PacificLime and Plaster Company, the only operator there at present. Thelimestone this company is mining appears to contain less magnesiumcarbonate than that in the Columbia district, and is a pure, coarselycrystalline white and grey stone. The limestone occurs in the Calaveras(Carboniferous) rocks, and the compression and alteration which thesecomparatively old rocks have undergone has resulted in changing muchof the limestone to marble. The marble was at one time quarried atthe Maine and Mississippi properties 7^ miles southeast of Sonora, butlater operations have been near Columbia. (See under Marble.) Sofar as known, the stone does not contain sufficient magnesium to beclassed as dolomite, but is, properly speaking, magnesian limestone ormagnesian marble. Pacific Lime and Plaster Company. Main office, 58 Sutter Street,San Francisco. Charles M. Cadman, president; John Mocine, residentmanager. L. M. Reith is superintendent of the plant one mile south 48 REPORT OF STATE MINERALOGIST

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o oo Si a goU SACRAMENTO FIELD DIVISION 49 of Sonora. The land holdings cover 4000 feet along the southern partof a limestone body which extends for several miles passing throughSonora, striking N. 27° W. The deposit lies between walls of Calaveras (Carboniferous) rocks,find is cut by a number of igneous dikes. For the most part it is asolid, coarsely crystalline deposit of white and light grey limestonewith high calcium and low magnesia content, and with very littlesilica, alumina and iron oxide. So far as opened, only a few smallcaverns have been encountered. The intrusive dikes appear to havehad little effect on the stone, but may serve as boundaries for Avork ina few places. The holdings are a consolidation of several smaller ones wherevarious pits were started by former operators. At present, mining isgoing on at three places. The north quarry (now worked undergroundentirely through adits) has been opened for 600 feet along the strikeand 91 feet deep, with three levels, two of t

приложение к журналам сената и собрания сессии законодательного собрания штата Калифорния 1929 г. узоры мраморная бумага ботаника садоводство сельское хозяйство Калифорния минералогия законодательные журналы высокое разрешение изображения из интернет-архива

1929

San Francisco Public Library

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