Image
Copyright & Fair-use Agreement
UNLV Special Collections provides copies of materials to facilitate private study, scholarship, or research. Material not in the public domain may be used according to fair use of copyrighted materials as defined by copyright law. Please cite us.
Please note that UNLV may not own the copyright to these materials and cannot provide permission to publish or distribute materials when UNLV is not the copyright holder. The user is solely responsible for determining the copyright status of materials and obtaining permission to use material from the copyright holder and for determining whether any permissions relating to any other rights are necessary for the intended use, and for obtaining all required permissions beyond that allowed by fair use.
Read more about our reproduction and use policy.
I agree.Information
Digital ID
Details
More Info
Publisher
Transcription
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