Barrett-Big Hill mining area

Region East, Northeast
Mineral systems
Deposit types
Critical minerals
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Circular buffer around points in either MRDS or from Mosier and others (2009).
Identified resources Historical production of lead and zinc. Identified resources for silver and gold.
Production Unknown.
Status Past mining. Exploration for silver in the 2000s.
Estimated resources Identified resources (1992): 24,407,600 metric tons at 43.890 g/t Ag and 0.34 g/t Au.
Geologic maps Gates (1977), scale 1:62,500.
Geophysical data Inadequate Rank 5 aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Silurian Leighton Formation, mafic to felsic volcanic rock member.
Deposits Barrett prospect (Big Hill) (MRDS dep_id: 10084606), Pembroke mine (MRDS dep_id: 10306872).
Evidence from mineral occurrences MRDS; Mosier and others (2009); Stephens and others (1984).
Geochemical evidence Favorable mineralogy.
Geophysical evidence Unknown.
Evidence from other sources Current (2021) exploration by Wolfden Resources.
Cover thickness and description Thin till and glaciomarine deposits cover about 90% of the area.
Authors Gregory J. Walsh.
New data needs Geophysical surveys and detailed geologic mapping.
Geologic mapping and modeling needs Detailed geologic mapping and geochemistry needed.
Geophysical survey and modeling needs High resolution aeromagnetic and aeroradiometric coverage.
Digital elevation data needs Lidar complete.