Klamath Mountains barite

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

Information leading to the delineation of this focus area

Basis for focus area Barite occurrences and production within limestone replacement deposits within the Eastern Hayfork Subterrane.
Identified resources Historical production of barite.
Production Glidden deposits (1962-1964): ~30,000 tons barite; Alwood deposit (1962): 100-10,000 tons barite.
Status Past mining; no current mining or exploration.
Estimated resources Unknown.
Geologic maps Jennings and others (1977), scale 1:750,000; California Geological Survey Regional Geologic Maps and Geologic Atlas of California, scale 1:250:000.
Geophysical data Inadequate Rank 2, 3, and 5 aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Limestone beds within the Eastern Hayfork Subterrane and age equivalents.
Deposits Glidden (Loftus) (MRDS dep_id: 10077526), Alwood mine (MRDS dep_id: 10077850).
Evidence from mineral occurrences MRDS.
Geochemical evidence Geochemistry from the Almanor and Glidden Ba deposits (see Wigglesworth, 1984).
Geophysical evidence None.
Evidence from other sources None.
Cover thickness and description Bedrock exposure at the surface.
Authors Catherine Wesoloski.
New data needs Updated geologic mapping, lidar, geochemistry, aeromagnetic and aeroradiometric surveys.
Geologic mapping and modeling needs 1:24,000 scale geologic mapping.
Geophysical survey and modeling needs Inadequate Rank 5 airborne magnetic and aeroradiometric coverage. High resolution, Rank 1 aeromagnetic surveys would be useful in delineating serpentine, ultramafics, but unclear if a new geophysical survey would be effective for barite deposits.
Digital elevation data needs Lidar inadequate.