Show THE GREAT COMSTOCK LODE the famous comstock lode of nevada is a great fissure vein four miles long along a line of faulting in the Teri tary eruptive rocks of the virginia range it crops out on tile the east side of mount davidson the mountain range but not the summit may be seen in clear weather from reno by looking 3 up tile the open valley to the southe southeast a s t the ore which is of high grade carries silver and gold in quartz in the old days it occurred ty typically in great bodies called bonanzas the district was noted for the largo large scale on which everything conn connected eded with tile the mining including the speculation was carried on the size of the old dumps and tile the kind of machinery employed show that great things were done here about in gold and silver in the ratio by value of 2 of gold to 3 31 of silver has been taken out of tile the comstock considerable ore is still being mined but the great bonanzas have all been worked out overland G guidebook ulde book bulletin U S geological survey t |