| Lat / long: | 39.70027, -105.37308 |
| Primary: | Feldspar, Mica |
| Tertiary: | REE |
| Ore: | Albite, Cleavelandite, Microcline |
| Gangue: | Allanite, Garnet, Magnetite, Muscovite, Quartz |
| Orebody form: | LENTICULAR |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| First production started: | 1935 |
| Last production ended: | 1949 |
| Host rock: | Idaho Springs Formation---Interlayered Hornblende Gneiss, Calc-Silicate Gneiss, And Amphibolite;Pegmatite |
| Host type: | Gneiss |
| Associated rock: | Pegmatite |
| Associated type: | Pegmatite |
| Structure: | Front Range Uplift, Denver Basin, Floyd Hill Fault Zone, Unnamed Overturned Anticline |
| Tectonic: | Central Cordillera (Southern Rocky Mtns) |
| MRDS | D010190 |
| DEP | 10013732 |
| Reference | {Deposit:: SHERIDAN, D.M., AND OTHERS, 1972, GEOLOGIC MAP OF THE EVERGREEN QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS MAP I-786-A.}{Deposit:: MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 27.}{Deposit:: BOOS, M.F., 1954, GENESIS OF PRECAMBRIAN GRANITIC PEGMATITES IN THE DENVER MOUNTAIN PARKS AREA, COLORADO: GSA BULL., V. 65, NO. 2, P. 115-142.}{Deposit:: USBM MIN. EXAM. FILE, REPT. OF 6/29/59 (FROM ORIGINAL CRIB RECORD)}{Production:: ORIGINAL CRIB RECORD (PROBABLY USBM REFERENCE)} |
| Reporter | Schwochow, Stephen D. |