University of Nevada, Las Vegas

Goldfield Belmont Report p06

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GEOLOGYContinuedis a siliceous cone in the extreme western end of this DACITE mass which, account of its hardness has resisted the erosion of the surrrounding country that has evidently subsided leaving DACITE exposed in the upper portion of the peak in which is found a mineralized zone from two to twenty feet thick. that has produced a large tonnage of rich shipping ore and still contains many thousands of tons of ore of a profitable millingThe MIDNIGHT FRACTION is wholly within this DACITE masswhich is silicified and fractured and along the contact between it and the ANDESITE along the west side line a quartz ledge of approximately four feet width crops prominently.IMPROVEMENTS AND DEVEL0PEMENTSThe Midnight Fraction Claim has been developed by open cut and trenches at various points with a view of determining the best point at which to sink a shaft.The main shaft has been sunk in the northern portion ofthe property. It is of two compartments well timbered andlagged,with vertical ladders and has been sunk a depth of 200 feet. One hundred and fifty feet of drifting has been donefrom the l00 ft. and the 200 ft. levels in a westerly direction to find the downward extension of the vein exposed on the peak.A forty foot (40 ft.) gallows frame of the two post type constructed of Oregon Pine timber and an engine house enclosing a 30 hp. hoist equipped with a 25 hp. electric motor of the variable speed type, and 500 feet of 5/8" steel rope and bucket

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Title
Goldfield Belmont Report p06
DC Type
Language
eng
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http://digital.library.unlv.edu/u?/dig,4
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