| Basis for focus area |
Accessory allanite reported within intrusions; minor historical potash and beryl mining. |
| Identified resources |
Historical production of beryllium (beryl) and potash. |
| Production |
Unknown. |
| Status |
Past mining. |
| Estimated resources |
Unknown. |
| Geologic maps |
Horton and others (2017), scale 1:500,000. |
| Geophysical data |
Inadequate Rank 3 to 4 aeromagnetic and Rank 4 aeroradiometric coverage. |
| Favorable rocks and structures |
Pegmatite. |
| Deposits |
Unknown. |
| Evidence from mineral occurrences |
Critical mineral potential inferred from the mineral system/deposit type table (Hofstra and Kreiner, 2020). |
| Geochemical evidence |
Unknown. |
| Geophysical evidence |
Unknown. |
| Evidence from other sources |
Unknown. |
| Comments |
Deposits well exposed throughout central Piedmont in Maryland. |
| Cover thickness and description |
Variable cover and saprolite, some urban areas. |
| Authors |
William Junkin, Rebecca Kavage Adams, David K. Brezinski. |
| New data needs |
Geophysical data, geologic mapping, and geochemical analyses. |
| Geologic mapping and modeling needs |
Some 1:24,000 scale mapping exists, but incomplete. |
| Geophysical survey and modeling needs |
High resolution aeromagnetic data would help delineate framework geology. |
| Digital elevation data needs |
Lidar complete. |
