214 GEOLOGICAL SUEVEY OF THE TEREITOEIES. 



and besides tlie fine look of the iron pyrites, native gold is found, in very 

 small particles, scattered over quite an extent of tlie pay streak. 

 In the mill are fifty eight-huudred-and-eighty-pound stamps. 



NEVADA CITY. 



Tlie FHze and Copeland lodes. — The town of Nevada adjoins Central 

 City and stretches away some two miles up the gulch in which it is 

 built. The Prize vein strikes about north 10° west, and the Copeland 

 nearly west. 



The two veins come together in the shaft at a depth of one hundred 

 and twenty feet from the surface. The drift on the Copeland has been 

 run seventy feet west and sixty-five feet east from the shaft. At the 

 extremity of the western outstope the vein is ten feet in width, and the 

 ore occurs throughout the w^hole of it. The ore is principally zinc- 

 blende, and assays one hundred dollars per ton. The second-class ore 

 averages six ounces per cord. Mine in excellent condition, and timbers 

 good. Seventeen men and two horses are employed in and outside the 

 mine. Back and forward stoping are being carried on at the yame time 

 from the extremities of the drift. At the bottom of the shaft the vein 

 is six feet in thiclvness, and contains an eighteen-inch pay streak close 

 to each wall. The average yield per diem is three cords (about twenty- 

 one tons. Twenty-four stamj^s are run night and day. 



North Star lode. — The ore from this lode contains a fahlerz which 

 will prove very rich. Tlie machinery and appointments of the mine are 

 the best that I saw around Central City. The hoisting apparatus, which 

 is provided with an automatic dumi)ing arrangement, works beautifully. 

 Shaft mouth, dressing works, and blacksmith shop are all under the 

 same roof. There are eight tables for blanket tailings. 



Ferrin lode. — The shaft house and mill belonging to the Perrin Mining 

 Company had just been erected under the superintendence of Mr. G-. A. 

 Bradley, but had not been running long enough to enable me to gather 

 any reliable statistics as to the amount of work which could be done 

 per diem. 



The shaft is situated in Eussell Gulch. The ores of this mine com- 

 l^rise copper and iron pyrites, copper glance, and fahlerz. The first- 

 class ore averages $150 per ton, and the second-class three and one-half 

 ounces per cord. The shaft is one hundred and forty feet deep ; dip of 

 vein, seventy-eight degrees ; strike north five degrees east at the shaft 

 mouth, but the strike varies w ith the distance from the shaft, and the 

 vein appears to conform to the shape of the hill. ISTo good hanging 

 wall has yet been reached. 



The mill owned by this company is located about a quarter of a mile 

 from the shaft house in Eussell Gulch, and is forty feet square. 



There are four companies running mills in the gulch above this one, 

 which purchase their water from the; Consolidated Ditch Company. Mr. 

 Bradley, however, has a drain to Graham Gulch, two hundred and fifty 

 feet distant, and leads the w^ater which he obtains from it to a tank of 

 twelve hundred cubic feet capacity. A large cistern of five barrels 

 capacity, attached to the rafters of the mill, keeps the stamps supplied 

 wdth water, through pipes suitably attached, and derives its supply from 

 the large tank previously mentioned. 



In the event of the water supply failing, there is a second tank, of 

 two hundred and eighty-eight cubic feet capacity, which is placed at the 

 opposite end of the mill, and into which the water from the tail sluices 

 runs. This tank is divided into a smaller and a larger part by a parti- 



