740 BULLETIN UlilTED STATES GEOLOGICAL SURVEY. 



Stromeyerite. Occurs in various districts. Fine but small specimens 



from Comstock Lode and Belmont; also at Cope, Lone Mountain, 



Mineral Hill, San Antonio, Eureka, and Palmetto. 

 SternbergJiite. In small but fine crystals at Reese River. 

 ■Sulpliitr. In small crystals at Carlin. In large quantities, massive and 



crystallized, at Mount Diablo, between thirty and forty miles northwest 



of Silver Peak. 

 Talc. Several small specimens were obtained at Eeese Eiver. 

 Tetrahedrite. Locality unknown. (Foote.) 

 Thenardite. Occurs as an acicular efflorescence on dry mud and halite, 



in Death Valley, ten miles south of Furnace Creek Canon. 

 Tourmaline. In small greenish -brown crystals at Moray. 

 Trona. Death Valley, Churchill County.* 

 Turquois. Occurs in the mountains five miles north of Columbus. The 



specimens are nearly all of a pale blue color, although some finely 



tinted ones have been obtained. 

 Uxelite. Locality unknown. (Foote.) 

 Water. See Appendix B. 

 Wavellite. Occurs on slate near Belmont. 



Wolframite. Found in the White Mountains, associated with hiibnerite. 

 Wulfenite. Occurs in fine tabular crystals at Eureka. 

 Zincazurite. Found sparingly in Eailroad District. 



In the above list I have omitted those compounds occurring all over 

 the State in greater or less abundance, such as pumice, scoria^ lava, 

 etc., they being deemed unnecessary, and not essentially of value in a 

 simple list of minerals. 



APPENDIX A. 



COAL. 



Unfortunately but little information can be given regarding the sub- 

 ject of coal and lignite. About ten miles southwest of Carlin I observed 

 a narrow seam of lignite. This was the only representative encountered. 

 What remarks are added below are derived chiefly from a paper t sent 

 to the Institute of Mining Engineers by Mr. A. J. Brown, of Treasure 

 City. 1 was also informed at Battle Mountain that ten or twelve miles 

 east of that place coal of good quality was being worked. I have been 

 unable to obtain specimens from the various mines in time for this 

 paper, but hope ere long to be able to submit a series of analyses illus- 

 trating the value of each specimen and an average result of those sets 

 of the respective mines. 



Mr. Brown says, in allusion to the Pancake coal, that " it is rather 



* Dana, Manual of Mineralogy, 1868, j). 706. 



t Quoted iu Mineral Eesources West of the Eocky Mountains, R. W. Raymond, 1875, 

 pp. 268, 269. 



