STATE AGRICULTURAL SOCIETY. 355 



STEOYMEYERITE. 



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Arizona, Hcintzleman Mine. 



SULPHUR. 



Colusa Counfi/ ; Napa Counfi/, ixt the ^ Geysers. In Nevada, in extinct 

 solfataras, Humboldt Valley. 



SULPHUEET OF SILVER. 



Nevada, Corastock lode; occurs with stephanite in the Ophir, Mexican, 

 Gould and Curry, and other mines upon that line of claims. It is also 

 j)resent in the ore of the vein at Gold Hill, and appears to be the chief 

 source of the silver in those ores. It has not been observed in crystals. 

 In the large chamber of the Ophir Mine, in eighteen hundred and sixty- 

 one, it was very abundant, in irregular masses ramif^'ing through the 

 fragmentary white quartz so as to hold it together in hand specimens. 

 Large masses of vein-stuff could be broken down, in which the sul])huret 

 of silver constituted at least half of the whole weight. Native gold 

 was commonly associated with it in that part of the mine. It is now 

 more frequently found associated with copper pyrites and galena. This 

 species is also found in small ciystals in the ore of the Daney Mine, asso- 

 ciated with native silver, gold, and ruby silver. It is common in the 

 ores of Reese River, associated vt^ith ruby silver and manganese spar. It 

 is probably the chief ore of silver in the Coi'tez District. 



SITLPHURET OF IRON. 

 (See Iron Pyrites.) 



TELLURET OF SILVER. 



(See Silver.) 

 El Dorado County. 



TETRAHEDRITE— (G^m^ Copper.) 



Mariposa County, with the gold in the Pine Tree vein ; also with the gold 

 in the same or similar vein at the Crown lode, Emily Peak, and at Coul- 

 terville in several claims. Calaveras County, at Carson Hill, in the large 

 vein, and associated with gold. This ore in decomposing leaves a blue 

 stain of carbonate in the quartz, and where it is found the rock is gener- 

 ally rich in gold. In Nevada it occurs abundantly in the Sheba Mine, 

 Ilumholdt County, massive and rich in silver. It is associated with the 

 following species, which were noted from time to time by Mr. Moss, the 

 Superintendent, and in part by the author: Ruby silver, argentiferous 

 galena, antimonial galena, iron pyrites, blende, cerusite, calcite, quartz 

 with acicular antimony, sulphuret of antimony in delicate needles and 

 massive, native silver, bournonite. Found also in Lander County, with ■ 

 the silver ores of the veins near Austin ; at the Comet lode, Veatch Caiion, 

 south of Austin. Los Angeles County — At the Zapata claim, San Gabi'iel 

 Mountains. Arizona — At the Hcintzleman Mine, containing from one to 

 one and a half per cent of silver. (Pumpelly.) Also at the Santa Rita 

 Mine, associated with galena. . ♦ 



