| Lat / long: | 38.48334, -105.59558 |
| Primary: | Quartz, Feldspar, Beryllium, Lithium |
| Secondary: | REE |
| Ore: | Beryl, Feldspar, Lepidolite |
| Gangue: | Biotite, Garnet, Magnetite, Topaz, Tourmaline |
| Operation type: | Surface |
| Production size: | Small |
| Development status: | Producer |
| Production years: | 1950-1959 |
| First production started: | 1950 |
| Last production ended: | 1959 |
| Host rock: | Migmatitic Gneiss |
| Host type: | Schist,Gneiss |
| Associated rock: | Quartz Monzonite Of Silver Plume.Age |
| Associated type: | Quartz Monzonite |
| Structure: | Southern Front Range, Ne-Trending Fault Near Texas Creek Fault |
| Tectonic: | Central Cordillera (Southern Rocky Mtns) |
| MRDS | DC05751 |
| DEP | 10108446 |
| Reference | {Deposit:: HEINRICH, E.W. AND VIAN, R.W., 1965, THE CHIEF LITHIUM PEGMATITE, DEVILS HOLE, FREMONT COUNTY, COLORADO: THE AMERICAN MINERALOGIST, V. 50, NOS. 1-2, P. 96-104.}{Deposit:: MEEVES, H.C., HARRER, C.M., SALSBURY, M.H., KONSELMAN, A.S. AND SHANNON, S.S., JR., 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES; ARIZONA, COLORADO, NEW MEXICO, SOUTH DAKOTA, UTAH, AND WYOMING: USBM INFORMATION CIRCULAR 8298, 34 P.}{Deposit:: TAYLOR, R.B., SCOTT, G.R., WOBUS, R.A. AND EPIS, R.C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE COTOPAXI 15-MINUTE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-900, 1:62,500.} |
| Reporter | Unknown, Collins, Donna B. |