MINERAL RESOURCES. 693 



ninety feet to a drift east and west, from which drift a winze is sunk one 

 hundred and ten feet deep. 



The ore vein, which is plainly visible in the drift, is from an inch to one 

 foot and more thick, with pockets, on which some stopping was done. It 

 seems as if west of the gangue worked another gangue runs in close prox- 

 imity. No cross cuts have been made up to this time. At the bottom of 

 the winze the water rises about ten feet in twenty-four hours if not hoisted. 

 The ore of the upper part of the vein is mostly galena, with twenty to thirty 

 ounces of silver, zincblende, and a ferruginous combination of both metals, 

 with occasional copper stains. 



Mr. Stevenson, the owner of the mine, claims to have shipped several 

 hundred car loads of ore. As far as has been reached in the lower part of 

 the mine the zinc (blende) seems to predominate. Many tons of zinc ore are 

 buried in the dump, which in itself partly consists of low grade ores. The 

 shafts and drifts on the slope above the working shaft are on the same lead 

 and to no practical purpose. 



A shaft about seventy-five feet deep farther down in the valley is on a lead 

 of a similar if not identical character. The two prospect holes about two 

 hundred yards east of the Bonanza shaft are on parallel leads. One is about 

 thirty and the other is about twelve or fifteen feet deep. The material on 

 the dump shows some silver bearing galena, besides molybdate of lead crys- 

 tals, which frequently fill the cavities of formerly existing galena crystals. 



The gangue is silico-ferruginous. No assays as far as I know were ever 

 made of material from these diggings. 



Still farther east, on the saddle of Zimpelman's Pass, are some very shal- 

 low holes on outcrops of siliceous iron breaking through lime. 



PARLIN BROTHERS' PROSPECT. 



The prospect of Parlin Brothers, southeast of Zimpelman's Pass, is at or 

 near the contact of the granitic range and the dark porphyritic rocks of the 

 Quitman Peak, where a number of leads run through the mountains. In all 

 these leads the silico-ferruginous character prevails, and seems to represent 

 the gossan of the Cornish, the eisernen hut of the German miner, more plainly 

 than at some of the other prospects. 



A drift of about fifteen feet in length shows some copper stains and holds 



some silver with the iron, also some molybdate of lead. The upper or main 



prospect has a shaft two hundred feet deep, with a drift nearly as long in the 



gangue, which, however, does not seem to be the main lead. A cross cut in 



the direction of the main lead (running parallel) has not yet reached the 



same. Argentiferous galena and molybdates are the principal ores, which 

 52 — geol. 



