360 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Peteoleum. — From the oil-wells in Oil Creek Canon, to the east of 



Canyon City, E. 

 Petzite. — In the gold-mines of Gold Hill, occurring in narrow seams 



and veins, M. 

 Phlogopite. — On station 46, E. 

 Pitchblende. — Occurs in large quantities ; massive in the Wood lode 



in Leavenworth Gulch, near Central, E. 

 Polyeasite. — In tabular crystals at the Terrible mine, near George- 

 town, E. 

 Prase.— Middle Park, M. 



Peehnite — Fair Play, in some of the mines, Peters. 

 Peoustite. — Occurring in the Brown lode, intermixed with galenite, F. 

 Pseudgimalachite. — Little Piatt Eiver, south of Fair Play, P. 

 Psilojvielane. — Seaton mine, Idaho, occurs in small quantities, E. 

 Pyeargteite. — In the Colorado Central, Terrible, International, Cold 

 Stream mines, at Georgetown, associated with galenite, fahlerz, and 

 sphalerite, E. In the Brown lode with galenite, F. 

 Pyeite. — One of the most widely-distributed minerals in the Territory. 

 As a rule, it is auriferous, occurring crystallized in pentagonal dodeca- 

 hedra in the. Bobtail, Bates, Briggs mine ; in cubes combined with 

 the pentagonal dodecahedron at the Winnebago, Mack, Dallas, Kan- 

 sas, Grand Army, Gannell, and other mines, all near Central City. 

 In immense bodies it is found in the Mammoth, Briggs, and Leavitt 

 lodes. It is found crystallized in the Terrible, Pelican, New Boston, 

 Cold Stream, and other mines near Georgetown; at th6 Tenth Legion 

 mine in Empire ; in cubes at stations 45 and 46, E. Found also in 

 Silver Hills, crystallized in the mines of Buckskin. Cubes of four to 

 five inches edge in the Phiiipps mine ; in the Elk Mountain district, 

 on Eagle Eiver; In octahedra on station 65, P. In the mines near 

 Idaho, crystallized and massive, M. 

 Pyeolusite. — Massive at Buckskin and in Silver Hills, Peters. 

 Pyeomoephite.— Freeland lode, Trail Creek, S. 

 Pyeoxene. — Near Fair Play, Peters. 



Quartz, ceystals. — Gunneil lode, Briggs mine. Quartz Hill and other 

 localities near Central. In the Eosita mines, in some of the George- 

 town mines, at station 46, E. On East Eiver, in the mines of Elk 

 Mountain district, Iowa Gulch, Sopris Peak, P. 

 QuAETZ, SMOKY. — On the Colorado divide ; large crystals on the Upper 



Platte, and on Pike's Peak, P. 

 QuAETZ, EOSY. — On station 70, E.; camp 39, P.; Bear Creek, S. 

 Ehodocheosite.-— Sweet Home mine. Park County, Sch., in very beauti- 

 ful specimens, and in the Diadem mine, Buckskin, Peters. 

 EUTILE. — On Ute Pass, occurring in quartz, Peters. 

 Sardonyx. — In Middle Park, M. 

 ScHiEMEEiTE, JV. sp. — Ecd Cloud and Cold Spring mine ; Gold Hill, 



Sch. and M. 

 SCHREiBEESiTE. — In the Colorado meteorite, S. 

 Selenite. — At various localities in the shales, station 35, E. 

 Semiopal. — At Los Pinos agency, E. 

 SiDERiTE. — Crystallized in South Park, Peters. 



Silver.— Native, as wire-silver at the Terrible, Georgetown, at the In- 

 ternational on Mount McClennan ; as wire-silver in the No Name and 

 Caribou mines at Caribou, E. In small nuggets and thin scales near 

 Fairplay, in Washington Gulch, Homestake lode, P. 

 Sinter. — Siliceous, South Park, S. 



