| Lat / long: | 39.70749, -105.44003 |
| Primary: | Feldspar, Mica |
| Tertiary: | Beryllium, Niobium (Columbium), REE |
| Ore: | Bertrandite, Beryl, Columbite, Microcline, Monazite, Muscovite |
| Gangue: | Albite, Biotite, Fluorite, Quartz |
| Orebody form: | TABULAR |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| Host rock: | Idaho Springs Formation---Feldspar-Rich Gneiss |
| Host type: | Gneiss |
| Associated rock: | Pegmatite |
| Associated type: | Pegmatite |
| Structure: | Front Range Uplift, Denver Basin, Floyd Hill Fault Zone, Unnamed Anticline, Unnamed Overturned Syncline |
| Tectonic: | Central Cordillera (Southern Rocky Mtns) |
| MRDS | D010227 |
| DEP | 10013763 |
| Reference | {Deposit:: HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 29-30}{Deposit:: SHERIDAN, D.M., AND MARSH, S.P., 1976, GEOLOGIC MAP OF THE SQUAW PASS QUADRANGLE, CLEAR CREEK, JEFFERSON, AND GILPIN COUNTIES, COLORADO: USGS MAP GQ-1337} |
| Reporter | Schwochow, Stephen D. |