MISCELLANEOUS MINERALS. 25 H 



quartz ; the former contained numerous cavities, holding hyd rated Gold andSflio.- 

 peroxide of iron. A portion of the galena, carefully freed from Province of 

 the associated quartz and oxide of iron, was found to contain : Columbia, 



cont. 

 Gold None. 



Silver 128-078 ounces to the ton of 2.000 lbs. 



It was considered desirable to ascertain if the associated 

 hydrated peroxide of iron carried any gold. For this purpose, 

 such portions of the galena as were most thickly coated with this 

 oxide were selected ; this material was found to contain, in addi- 

 tion to the silver pertaining to the galena, in the sample thus 

 prepared : 



Gold Distinct traces. 



And which had evidently accompanied the peroxide of iron ; 

 the above assay of the pure galena having conclusively proven 

 the same to be entirely free from gold. 



MISCELLANEOUS EXAMINATIONS. Miscellaneous 



examinations. 



1. — Mineral specimen sent by Mr. Grisborne, in order that it might be 

 examined for copper. The locality of its occurrence was started 

 to be the Big Slide, Fraser River, British Columbia. 



It consisted of a mixture, almost in equal proportions, of pyrite 

 and pyrrhotite. It was examined by Mr. Frank D. Adams for 

 copper, nickel and cobalt, and found to contain : 



Copper .... 0.097 per cent. 



Cobalt (with a little nickel; , 0.060 " 



