Little Friar Mountain pegmatite

Region East, Southeast
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Buffered point for Little Friar Mountain pegmatite mine location.
Identified resources Historical production of gemstones.
Production Unknown.
Status Past mining of allanite for mineral specimens.
Estimated resources Unknown, but considered a small deposit.
Geologic maps Werner (1965), scale 1:62,500.
Geophysical data Inadequate Rank 4 aeromagnetic and Rank 5 aeroradiometric coverage.
Favorable rocks and structures Pegmatitic deposits in hypersthene granodiorite.
Deposits Little Friar Mountain mine (MRDS dep_id: 10080104; USMIN Site_id: VA00009).
Evidence from mineral occurrences MRDS; USMIN.
Geochemical evidence Allanite analysis: 40% SiO2, 17.024% Total Fe, 12.44% Al2O3, 6.5% Ce metal, 6.42% Y metal. Fergunsonite analysis: 48.66% Nb2O5, 2.09% Zr02, 27.94% Er2O3-Y2O3, 1.37% Ce2O3, 3.92% La2O3, 4.6% Dy2O3 (MRDS).
Geophysical evidence Unknown.
Evidence from other sources Unknown.
Comments Known producer but limited spatial extent. Benefit of geophysical surveys not known.
Cover thickness and description Cover less than 100 m?
Authors Anjana K. Shah.
New data needs Geologic mapping.
Geologic mapping and modeling needs Geologic mapping of pegmatites.
Geophysical survey and modeling needs Aeromagnetic data expected to image mafic rocks and associated structures, radiometric data can help with geologic mapping in vegetated terrane; alteration may be imaged. Electromagnetic methods may help image sulfides.
Digital elevation data needs Lidar mostly complete; small portion in progress.