GEOLOGY OF TONOPAH MINING DISTRICT, NEVADA. 



The same rock was encountered at the bottom of a winze, 2<> feet below the 

 west drift on the ;"> 12-foot level, where it seem* to cut off the Montana vein. It 



Montana 



-YAx v / - -> '/rAffi^^^\^^^. f j;-,V'/ 



v-# ' - ^^^8i^SS 

 - isl^iliM 



300 feet 



Kio. 66. t'ross wction showing guolofry exposed liy Montaim Tonopuh workings. 



is also found on the 615- and 765-foot levels (fig. 66). As is usual in thi.s formation 

 irregular and bunchy quart/ veins are encountered, which sometimes yield good 

 assays, especially in gold; but no pay ore has yet been found. 



