White Basin

Region West, Southwest
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Focus area based on Tertiary conglomerate and clastic rocks from the Nevada state geologic map (Stewart and Carlson, 1978).
Identified resources Historical production of borax.
Production Colemanite (a hydrated calcium borate) was discovered in White Basin in 1920 and mined until 1924.
Status Past mining for borax (colemanite); current exploration for lithium.
Estimated resources Unknown.
Geologic maps Bohannon (1977), scale 1:25,000; Anderson (2003), scale 1:24,000; Duebendorfer (2003), scale 1:24.000.
Geophysical data Inadequate Rank 4 aeromagnetic coverage.
Favorable rocks and structures Oligocene-Miocene Horse Springs Formation, a widespread nonmarine sedimentary unit in southern Nevada and northwestern Arizona.
Deposits White Basin (MRDS dep_id: 10046984).
Evidence from mineral occurrences MRDS.
Geochemical evidence Up to 3,762 ppm lithium in calcareous playa lake samples.
Geophysical evidence Unknown.
Evidence from other sources Active exploration by Alix Resources.
Comments Colemanite occurs in bunchy layers interbedded with whitish shale or thin-bedded limestone of the Horse Spring Formation. Some parts of the formation also contain deposits of gypsum and magnesite. Colemanite forms bands or zones that are locally called "veins," although these so-called veins are actually beds because they are parallel with the enclosing strata and exhibit bedded structure (Noble, 1922).
Cover thickness and description Exposed at the surface.
Authors Jane M. Hammarstrom.
New data needs Updated geologic mapping, lidar, geochemistry, aeromagnetic and aeroradiometric surveys.
Geologic mapping and modeling needs Updated geologic mapping.
Geophysical survey and modeling needs High-resolution, Rank 1 aeromagnetic and aeroradiometric surveys.
Digital elevation data needs Lidar inadequate.