| Lat / long: | 38.47168, -105.34446 |
| Primary: | Mica, Beryllium, Feldspar |
| Secondary: | Garnet |
| Tertiary: | Niobium (Columbium), Bismuth, Thorium, Copper, Silver |
| Ore: | Beryl, Bismutite, Chalcocite, Chrysocolla, Columbite, Covellite, Malachite, Microcline, Muscovite, Silver, Thorite |
| Gangue: | Apatite, Biotite, Calcite, Chlorite, Quartz, Sericite, Tourmaline |
| Orebody form: | IRREGULAR, PIPE-LIKE TO SHEET-LIKE |
| Discovery year: | 1929 |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Producer |
| First production started: | 1929 |
| Host rock: | Migmatitic Gneiss |
| Host type: | Gneiss |
| Associated rock: | Quartz Diorite;Granodiorite (Pikes Peak Granite) |
| Associated type: | Diorite |
| Structure: | Southern Front Range, Canon City Embayment, Eightmile Park, Ne-Trending Faults, Structures |
| Tectonic: | Central Cordillera (Southern Rocky Mountains) |
| MRDS | D009882 |
| DEP | 10013532 |
| Reference | {Deposit:: HANLEY, J.B., HEINRICH, E.W., PAGE, L.R., 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING AND UTAH, 1942-1944: USGS PROFESSIONAL PAPER 227, P. 40.}{Deposit:: HEINRICH, E.W., 1948, PEGMATITES OF EIGHT MILE PARK, FREMONT COUNTY, COLORADO: THE AMERICAN MINERALOGIST, V. 33, NOS. 7-10, P. 420-448, 550-587.}{Deposit:: TAYLOR, R.B., SCOTT, G.R., WOBUS, R.A., EPIS, R.C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE ROYAL GORGE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-869, 1:62,500.}{Deposit:: ECKEL, E.B., 1960, MINERALS OF COLORADO, A 100-YEAR RECORD: USGS BULLETIN 1114, P. 20, 339.}{Production:: HANLEY, J.B. (1950)} |
| Reporter | Collins, Donna B. |