Appendix to the Journals of the Senate and Assembly of the session of the Legislature of the State of California (1917) (14781137881)

Identifier: appendixtojourna19177cali (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:

e of 13,500 feet (seephotos Nos. 3 and 4). The country rock is principally serpentine,through which numerous dikes of diorite and gneiss have been thrust.This serpentine carries chrysotile asbestos, both slip and cross fiber,hornblende amianthus (Italian floss), amphibole, and mass fiber of allkinds. One deposit of chrysotile is 270 feet long, 100 feet high, andprobably over 400 feet wide on the surface. There are four chrysotilequarries, the cropping faces being 100 to 500 in height, with no over-burden. One ridge, 7000 feet long, a continuous chrysotile zone, canbe worked by means of a steam shovel, from both sides. The averageelevation of this ridge is about 6200 feet. A report on this asbestosdeposit has been made by H. Leslie Parker (April, 1913). Mr. Parkerstates that on these claims is a wonderful development of actinolite,occurring in the cross fiber fissures, some of which are five inches ormore in width and then decreasing in size to ribbon-like seams. The SHASTA COUNTY. 753

Text Appearing After Image:

754 MINES AND MINERAL RESOURCES. structure of this actinolite is similar to that of cross fiber chrysotile.In the creek bottom is shown cross fiber chrysotile of superior qualityand is associated with slip fiber chrysotile, which occurs on the slicken-sided fractures caused by the rock movements. The claims on thewhole are covered with a growth of excellent yellow pine, suitable forall mining, milling and tramway purposes. Hydroelectric power canbe cheaply developed on Mears Creek, sufficient for very extensivemining and milling operations.* Investigations made to determine the quality of this asbestos by theEaton-Philbrick laboratories show that it is of the best quality, and

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1917

San Francisco Public Library

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