The interesting specimens of quartz described in this paper were sent the writer by Mr. H. G. Clinton, of Manhattan, Nevada. These forms were found in a ledge on the north side of Iowa Canyon, Lander County, about six miles from the mouth. The canyon is located about 30 miles northeast of Austin. The ledge which is about four feet thick stands almost vertically and strikes north-south. The country rock is chiefly diorite.

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