Cal Blue Mine

Region West, Southwest
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Discovered in 2006 by prospectors, general deposit details in Hunerlach (2012), detailed beryl chemistry in Pauly (2019).
Identified resources Historical and current production of aquamarine (beryl) and gem-quality topaz from the Blue Mine.
Production Unknown.
Status Past and current production of gem-quality aquamarine and topaz.
Estimated resources Unknown.
Geologic maps Sadler (1982), scale, 1:24,000.
Geophysical data Inadequate aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Aquamarine- (blue beryl) and topaz-bearing pegmatites in Precambrian gneiss.
Deposits California Blue mine.
Evidence from mineral occurrences Hunerlach (2012); Pauly (2019).
Geochemical evidence Gem-quality aquamarine and topaz currently mined.
Geophysical evidence Unknown.
Evidence from other sources None.
Comments 2021 California USGS STATEMAP mapping of Landers and Yucca Valley North 7.5-min quadrangles (1:24,000-scale) covers the Cal Blue Mine.
Cover thickness and description Pegmatites exposed at surface, near horizontal based on description in Pauly (2019).
Authors Erica Key.
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 2017 high resolution lidar (035m-spacing) coverage ends just south of focus area, needs full coverage.