GEOLOGICAL SURVEY OF THE TERRITORIES. 199 



CATAI.OGUB OF MINERALS. 



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

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

 stone Eiver. 



AzuRiTE, (blue carbonate of copper.) Near Virginia City, Madison 

 County, Montana Territory. 



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

 tana Territory. 



Calcitb, (carbonate of lime.) Broicn spar near Oxford, Idaho Terri- 

 tory. Ehomb spar near Copenhagen, Utah Territory ; in the valley 

 of the Yellowstone Eiver; in Bear Eiver Valley, back of Saint Charles, 

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

 ing Territory. Iceland spar near the Crow Indian Agency, on the 

 Yellowstone Eiver, Montana Territory. Crystals of calcite on volcanic 

 rock at Gardiner's Eiver, near the White Hot Springs. 



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

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

 East Fork of Yellowstone Eiver ; in chips throughout the valley of 

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

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

 an araygdaloidal traj)-rock, on Beaver Head Eiver, Jefferson County, 

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

 lode, Madison County, Montana Territory. 



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

 tory; at»Eed Bluff lode, with galena, Madison County, Montana 

 Territory. 



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

 at Evauston, Utah Territory. 



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

 Montana Territory. 



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

 in granites near Botteler's, Montana Territory. Labradorite in gran- 

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

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

 Territories, Sanidine in phonolite at Pleasant Valley; in trachytes 

 in Grand Canon of the Yellowstone Eiver ; in trachytes about Yel- 



. lowstone Lake. 



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

 stone Eiver. 



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

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

 Virginia City; in hornblende schist in canon of the Yellowstone 

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

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



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

 tana Territory ; with copper pyrites at Eed Bluff lode. Hot Spring 

 district, Madison County, Montana Territory; in the mountains 

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

 in Bear Eiver Valley, Utah Territory. 



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

 Eiver. 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 cauliflower-like form, 

 abundant in both the lower and upper basins ; also massive, compact, 

 porous, and pearly varieties in both basins. 



