146 BULLETIN 131, UNITED STATES NATIONAL MUSEUM 



Idaho has ever been made and the only locality from which the writer 

 lias seen specimens is John Doctors Pilot mine in the Coeur d'Alene 

 district in Shoshone County. The most authentically reported 

 occurrences are as follows: 



IDAHO COUNTY 



Tellurides of gold and silver occurred in the Little Giant vein in 

 the Warren district associated with argentite and native silver. 

 Lindgren 20 mentions the report, but says that he was unable to 

 find any tellurides when he visited the property. 



Tellurides are said to have occurred with galena, pyrite, chal- 

 copyrite, and coarse wire gold in quartz veins on Bear Creek in the 

 Marshall Lake district 40 miles southwest of Buffalo Hump. 21 



Tellurides of gold are reported to occur in the Black Pine mine in 

 the Elk City district as very finely disseminated grains in dark 

 stains in quartz ore containing galena and free gold. 



LEWIS COUNTY 



Tellurides are said to occur in the Deer Creek property on the 

 southern slope of Craig Mountain on the drainage of Deer Creek, 

 a tributary to Salmon River. 22 



SHOSHONE COUNTY 



A gold telluride of silver-white color possessing well-defined cleav- 

 age, which is probably sylvanite, was observed by the writer in 

 specimens of tellurium-bearing ore in the possession of John Doctor 

 from a pocket of very rich gold ore found in the Pilot claim at Murray 

 in the Coeur d'Alene district. 



KERMESITE (107) 



Antimony oxysulphide, Sb 2 OS2- Monoclinic. 



Kermesite is a red mineral often found in small amounts in anti- 

 monial ores where it has been formed by slight oxidation of stibnite. 

 It is probably present in most of the antimony deposits of the State, 

 but has not been carefully looked for. 



SHOSHONE COUNTY 



Thin coatings of deep red to brownish red powder on cracks in 

 stibnite from the Stanley antimony mine at Burke are probably 

 kermesite and similar material doubtless occurs in the other antimony 

 mines of the district. 



2° Waldemar Lindgren. U. S. Geological Survey, 20th Ann. Report, pt. 3, p. 245, 1900. 



2 ' Robert N. Bell. Mining Industry of Idaho for 1913, p. 176. 



22 D. C. Livingston and F. B. Laney. Idaho Bur. Mines and Geol., Bull. 1, p. 101. 



