Basis for focus area |
Pegmatite deposits that do not fall into larger districts are within this Parker Mountain district (Bradley and others, 2016). |
Identified resources |
Historical production of feldspar and mica. |
Production |
Unknown. |
Status |
Past mining. |
Estimated resources |
Unknown. |
Geologic maps |
Stewart (1961), scale 1:62,500; Lyons and others (1997), scale 1:250,000; Kerwin (2003); scale 1:48,000. |
Geophysical data |
Inadequate Rank 4 aeromagnetic and Rank 5 aeroradiometric coverage. |
Favorable rocks and structures |
Pegmatite. |
Deposits |
Parker Mountain mine (MRDS dep_id: 10296151). |
Evidence from mineral occurrences |
MRDS. |
Geochemical evidence |
Favorable mineralogy and rock type. |
Geophysical evidence |
Unknown. |
Evidence from other sources |
Unknown. |
Comments |
The Parker Mountain pegmatite is from 5 to 40 feet wide and consists of discontinuous graphic granite. Mined for feldspar with mica as a byproduct. Other minerals include beryl, cassiterite, columbite, and spodumene. |
Cover thickness and description |
Exposed at the surface. |
Authors |
Nora K. Foley, Dwight C. Bradley, Anjana K. Shah, Gregory J. Walsh, Bernard E. Hubbard. |
New data needs |
Mapping. |
Geologic mapping and modeling needs |
Detailed mapping of pegmatite bodies, geophysics may not be useful for pegmatites. |
Geophysical survey and modeling needs |
High resolution aeromagnetic and aeroradiometric data to assist with framework geology such as structural features and contacts. |
Digital elevation data needs |
Lidar is adequate. |