The source is an active geothermal system, Alkali Hot Spring along the southern margin of the basin. Just as with circulating basin waters, deep fluids, particularly hot ones associated with the geothermal resource, dissolve rocks, liberating Boron, Lithium and other elements such as sodium and chloride. These minerals are brought to the surface as springs emanating from the faults bounding the playa. The association of a closed basin with an arid environment, a geothermal system and plentiful sources of Lithium suggests that Alkali Lake may host significant Lithium rich brines.
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