Greystone and Argenta Mines

Region West, Southwest
Mineral systems
Deposit types
Critical minerals
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Barite past producers in MRDS.
Identified resources Historical production of barite.
Production In 2017, the Argenta mine shipped 62,263 tons barite and Greystone mine shipped 133,000 tons barite (Perry and Visher, 2018).
Status Past and current mining.
Estimated resources Unknown.
Geologic maps House and others (2001), scale 1:24,000; Mitchell (1977), various scales; Stewart and Carlson (1976), scale 1:250,000; Coats (1987), scale 1:250,000.
Geophysical data Inadequate Rank 4 aeromagnetic and Rank 5 aeroradiometric coverage.
Favorable rocks and structures Devonian Slaven Chert Formation; thin-bedded chert, siliceous argillite, shale, with minor limestone.
Deposits Argenta mine (MRDS dep_id: 10295343), Greystone mine (MRDS dep_id: 10246611), Rossi mine (MRDS dep_id: 10221439).
Evidence from mineral occurrences MRDS.
Geochemical evidence Unknown.
Geophysical evidence Unknown.
Evidence from other sources Unknown.
Cover thickness and description Exposed at the surface-open-pit mining.
Authors David A. Ponce.
New data needs Geophysics.
Geologic mapping and modeling needs Current mapping inadequate.
Geophysical survey and modeling needs High resolution, Rank 1 aeromagnetic and aeroradiometric coverage and gravity survey needed.
Digital elevation data needs Lidar in progress over much of the focus area (GeoDAWN); complete in the eastern portion.