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SILVER-LEAD DEPOSITS OF EUEEKA, NEVADA. 



This quartzite contained iron pyrites and some molybdenite. All the 

 silver buttons were dissolved together, and the resulting gold gave an 

 average of 4 cents to each sample. The usual flux was employed in assay- 

 ing this rock, except that 1 50 grains bitartrate of potash and 350 grains of 

 borax were used. 



Chlorination test of Richmond "red" and "yellow" ore. The finely pulverized Sample 



was leached for one week with hyposulphite of soda, and the difference be- 

 tween the assay value of the unleached samples and that of the leached 

 sample showed that 36.1 per cent, of the silver contained in the ore was in 

 the form of chloride. 



ASSAYS OF VARIOUS BOCKS. 



o These two samples oame from near low-grade ore. 



