BJi.Lic!i.] GEOLOGY— inNERALOGICAL CATALOGUE. 361 



Smithsonite. — Jones's mine on sphalerite, near Central, E. Eunuing 

 lode, Black Hawk, F. 



Soda. — Carbonate, from the Hot Springs of Idaho, E. 



Sphalekite. — ^Occnrs in almost every mine ; only few exceptions take, 

 place. In the lead-silver mines it is more abundant than in the gold-^ 

 mines. It is found in the Winnebago, dark brown, Dallas, GunnelU 

 J. P. Whitney, Kansas, Wood, California, Running, Bobtail, Brigg8„ 

 (small quantities in these two,) Monte Christo, and numerous others 

 mines in the vicinity of Central. The mines of Georgetown InvariaA 

 bly contain it. The Caribou mines show at times large quantities ofii 

 the mineral. Station 46, E. Sphalerite containing cadmium is found 

 in several mines near Eairplay, Peters. 



Spinel. — Crystal mine, Virginia Canon, S. 



Stephanite. — Colorado Central, Georgetown, E. Moose mine near 

 Fairplay, and others, Peters. 



Steb:nite. — Terrible mine near Georgetown, E. 



Sulphur. — In a small crystal on galenite from the Clifton mine near 

 Central, von Schulz ; found in Middle Park, S. 



Sylvanite. — In the Red Cloud mine of Gold Hill, occurring in foliated 

 masses and thread-like veins, M. 



Talc. — In fine scales among the gangue-rock of the Bobtail and Kan- 

 sas near Central. In light-pink scales in the Silver Hills and Barton 

 mines, Hardscrabble district, E. On Sopris Peak, P. 



Tellurium^ native. — At the Red Cloud mine of Gold Hill, in crystal- 

 line masses, belonging to the hexagonal system. Found in a speci- 

 men obtained from Professor Schirmer. 



Tennantite. — Crystals in Buckskin Gulch, Peters. Geneva district, 

 Park County, Sch. 



Tetrahedeite. — Crystals in Buckskin Gulch, Peters. 



Tourmaline. — In the quartz of Gunnell Hill, Central, of Running Hill, 

 Blaek Hawk, E. On Guy Hill and at Nevada, S, Station 64, P. 

 Crystals with both terminations at Montgomery, Peters. 



TuFFA. — Calcareous, Currant Creek, E. Roaring Fork and Frying Pan, P. 



Turquoise. — Southern Colorado, doubtful, S. 



Uraninite. — On the dumps of the Wood lode in Leavenworth Gulch, E. 



Vesuyianite. — In large crystals of simple combination on Mount 

 Italia, station 64, P. 



Willemite. — Jones's mine. Central, E. 



WoLLASTONiTB. — Near Fairplay in the limestones, Peters. 



ZmciTE. — Jones's mine. Central, S. 



ZiNKENiTE. — Sweet Home mine, small crystals, Peters. 



Zircon.— Bear River, Middle Park, S. 



