White Mountains pegmatites

Region East, Northeast
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Pegmatite region: polygon based on known occurrences, geophysical Th anomalies and surface geology. See Meyers and Stewart (1956) and Gazdik and others (1988).
Identified resources Historical production of feldspar and mica.
Production Unknown.
Status Past mining; current mineral collecting localities.
Estimated resources Unknown.
Geologic maps Lyons and others (1997), scale 1:250,000; Osberg and others (1985), scale 1:500,000; Horton and others (2017), scale 1:500,000; Eusden and others (2015); scale 1:24,000.
Geophysical data Inadequate Rank 4 and 5 aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Pegmatite.
Deposits Weeks feldspar quarry (MRDS dep_id: 10009162).
Evidence from mineral occurrences MRDS.
Geochemical evidence Elevated REE, especially Y and Lu.
Geophysical evidence Radiometric eTh high.
Evidence from other sources Unknown.
Comments Although a past producer, likelihood of future extraction is unknown. Regional geophysical anomalies present, possibility at deposit scale is unknown. Amount of resource unknown. Subvolcanically emplaced granitic, miarolitic pegmatites associated with the White Mountain Igneous Province (Camp, 2011).
Cover thickness and description Cover less than 100 m?
Authors Dwight C. Bradley, Anjana K. Shah.
New data needs Geophysics, geologic mapping.
Geologic mapping and modeling needs Detailed mapping 1:24,000 scale quadrangles, mapping individual pegmatite bodies.
Geophysical survey and modeling needs High resolution aeromagnetic and aeroradiometric data for framework geology.
Digital elevation data needs Lidar adequate.