| Basis for focus area |
Buffer around point from Foley, Jaskula, Piatak and Schulte (2017). Area encloses the South Platte pegmatite district. Buffer encloses a few fluorspar records outside of the South Platte district. |
| Identified resources |
Historical production of feldspar, fluorite, and quartz. |
| Production |
Unknown. |
| Status |
Past mining. |
| Estimated resources |
Unknown. |
| Geologic maps |
Peterson (1964), scale 1:24,000; Ruleman and others (2011), scale 1:100,000. |
| Geophysical data |
Inadequate Rank 5 aeromagnetic and Rank 3 aeroradiometric coverage. |
| Favorable rocks and structures |
Pegmatites in Buffalo Park intrusive center (northern portion of the Pikes Peak granite). |
| Deposits |
Butte 1, Dazie Bell mine (MRDS dep_id: 10013724), Delbert Claims #1&2, Gilpin #1, Little Patsy #1&2, Luster Lode claim (fluorite past producers). |
| Evidence from mineral occurrences |
MRDS. |
| Geochemical evidence |
MINDAT lists more than 50 pegmatite localities in the district; numerous REE and Nb-Ta minerals. Some geochemical data published by Simmons and others (1987). Gagnon and others (2004) suggest low temperature (90-110 °C) F-bearing fluids mixed with Ca released during albitization and associated replacement alteration of primary pegmatite. |
| Geophysical evidence |
Unknown. |
| Evidence from other sources |
Unknown. |
| Comments |
Proterozoic pegmatites in the Pikes Peak batholith. Also note that this area overlaps with the South Platte focus area. |
| Cover thickness and description |
No cover. |
| Authors |
Ryan D. Taylor, Jane M. Hammarstrom, Joshua M. Rosera, V.J.S. (Tien) Grauch, David A. Ponce. |
| New data needs |
1:24,000 scale geologic mapping and potential geochemical sampling. |
| Geologic mapping and modeling needs |
1:24,000 scale geologic mapping of the Deckers quadrangle. |
| Geophysical survey and modeling needs |
Detailed aeromagnetic and aeroradiometric could help distinguish different petrologic types on the ground, but would not be good at detecting pegmatites themselves. |
| Digital elevation data needs |
Lidar complete on southern half of focus area; in progress on northern half. |
