GEOLOGICAL SURVEY OF THE TERRITORIES. 199 



CATALOGUE OF MINERALS. 



Agate. In pebbles on the shore of Yellowstone Lake, Wyoming 

 Territory j in the bed of the south branch of East Fork of Yellow- 

 stone Eivei'. 



AzuRiTE, (blae carbonate of copper.) Near Yirginia City, Madison 

 County, Montana Territory. 



BiOTiTE, (black mica.) In granite at the head of Wild Cat Caiion, Mon- 

 tana Territory. 



Calcite, (carbonate of lime.) Brown s]^ar near Oxford, Idaho Terri- 

 tory. Rhomb spar near Copenhagen, Utah Territory j in the valley 

 of the Yellowstone River ; in Bear River Yalley, back of Saint Charles, 

 Utah Territory; at Promontory Point, Yellowstone Lake. Wyom- 

 ing Territorj^ Iceland spar near the Crow Indian Agency, on the 

 Yellowstone River, Montana Territory. Crystals of calcite on volcanic 

 rock a^ Gardiner's River, near the White Hot Springs. 



Chalcedony. Rounded pebbles, on the shores of Yellowstone Lake ; 

 in geodes with agate, opal, and quartz, on the south branch of the 

 East Fork of Yellowstona River ; in chips throughout the valley of 

 the Yellowstone River; in geodes, with quartz and calcite, near 

 Gardiner's River ; at the foot of Mount Washburne ; in cavities, in 

 an araygdaloidal trap-rock, on Beaver Head River, Jefferson County, 

 Montana Territory. Beautiful blue specimens in jasper, at Red Bluff 

 lode, Madison County, Montana Territory. 



Chalcopyritb, (copper pyrites.) Near Virginia City, Montana Terri- 

 tory; at Red Bluff lode, with galena, Madison County, Montana 

 Territory. 



Coal, (lignite.) Near Fort Ellis, Gallatin County, Montana Territory ; 

 at Evanston, Utah Territory. 



Cuprite, (red oxide of copper.) Near Virginia City, Madison County, 

 Montana Territory. 



Feldspar. AlMte, with quartz, in Port Neuf Canon, Idaho Territory ; 

 in granites near Botteler^s, Montana Territory. Lahradorite in gran- 

 ites in Wild Cat Canon, Montana Territory. Orthoclase in syenites 

 at Ogden, Utah Territory ; in granites, through Idaho and Montana 

 Territories, Sanidine in phonolite at Pleasant Valley; in trachytes 

 in Grand Caiion of the Yellowstone River ; in trachytes about Yel- 

 lowstone Lake. 



Flint, (black variety.) On south branch of the East Fork of Yellow- 

 stone River. 



Garnets. Below Virginia City in gneissic rocks; in Alder Gulch, 

 near Virginia City ; on the Madison River, about forty miles above 

 Virginia City; in hornblende schist in canon of the Yellowstone 

 River, above Botteler's ; in bowlders near the caiion of the Jefferson 

 River, near the junction of the three forks of the Missouri River. 



Galena, (sulphide of lead.) Argentiferous, near Virginia City, Mon- 

 tana Territory ; with copper pyrites at Red Bluff' lode, Hot Spring 

 district, Madison County, Montana Territory ; in the mountains 

 along Cache Valley, Utah Territory ; in limestones in the mountains 

 in Bear River Valley, Utah Territory. 



Geyserite, (siliceous sinter.) In the geyser-basins of the Fire-Hole 

 River. Pink, translucent varieties in the lower basin ; also small 

 balls of the same, some smooth, others covered with a rosette-like 

 formation ; gray and white varieties, having a caulillower-like form, 

 abundant in both the lower and upper basins ; also massive, comi)act, 

 porous, and pearly varieties in both basins. 



