File:Bulletin (1905) (14799491263).jpg

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Identifier: bulletin78cali (find matches)
Title: Bulletin
Year: 1905 (1900s)
Authors: California. Division of Mines and Geology California. State Mining Bureau. Bulletin
Subjects: Mines and mineral resources Geology
Publisher: San Francisco (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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QUICKSILVER RESOURCES. 65 lime of the last closing clown of the mine (clue to financial troubles aswell as the increasing difficulties of ventilation and pumping in conse-fiuence of the hot waters and deleterious gases) they had opened up agood body of high-grade ore underground from the Empire shaft.The Sulphur Bank is a low. rounded hill (see Photo No. 10), on theeastern shore of Clear Lake in Sec. 6. T. 13 N., R. 7 W., about 10 miles
Text Appearing After Image:
Photo No. 11. Exfoliation of basalt at Sulphur BanV Mine, due to solfataricaction. Photo by Emile Huguenin. north of Lower Lake. It is also reached by launch from Lakeport.The elevation is 1350 feet at the lake level. The old surfacecuts much resemble those of a placer mine with its tailingspiles of boulders, except that over it all is a pulverulent, whitepowdery material, the result of the continuing decomposition of therocks by the solfataric vapors and waters still present. The glare is 3—aS540 m CALIFORNIA STATE MINING BUREAU. almost blinding- on a sunny day. The rounded boulders due to concen-tric decomposition, as described by Becker^ can be plainly seen (seePhoto No. 11). The evidences of solfataric activity are numerous andstriking-. Iron rails, nails, cables, etc., are sulphurized and oxidized.Wood is blackened and rotted. There are abundant sulphur crystalsin crevices and flour sulphur around vents where vapors are i.ssuing.At the mouth of an abandoned shaft, now caved, ne

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78
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29 July 2014



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