| Lat / long: | 39.84277, -105.37281 |
| Primary: | Quartz, Feldspar, Mica |
| Secondary: | REE |
| Ore: | Microcline, Muscovite, Quartz |
| Operation type: | Unknown |
| Production size: | None |
| Development status: | Occurrence |
| Host rock: | Idaho Springs Formation---Microcline-Quartz-Plagioclase-Biotite Gneiss Unit |
| Host type: | Gneiss |
| Associated rock: | Granitic Pegmatite |
| Associated type: | Pegmatite |
| Structure: | Front Range Uplift, Denver Basin, Hurricane Hill Fault System, Unnamed Syncline, Idaho Springs-Ralston Shear Zone |
| Tectonic: | Central Cordillera (Southern Ricky Mtns) |
| MRDS | D010184 |
| DEP | 10013727 |
| Reference | {Deposit:: SHERIDAN, D.M., AND OTHERS, 1967, GEOLOGY AND URANIUM DEPOSITS OF THE RALSTON BUTTES DISTRICT, JEFFERSON COUNTY, COLORADO: USGS PROF. PAPER 520 (INCL. GEOLOGIC MAP OF RALSTON BUTTES QUAD)}{Deposit:: USBM MIN. EXAM. FILE, REPT. OF 2/2/59 (FROM ORIGINAL CRIB RECORD)} |
| Reporter | Schwochow, Stephen D. |