Show simple item record

dc.contributor.authorCoffey, Daniel
dc.contributor.authorMunk, Lee Ann
dc.contributor.authorIbarra, Daniel
dc.contributor.authorButler, Kristina
dc.contributor.authorBoutt, David
dc.contributor.authorJenckes, Jordan
dc.date.accessioned2021-12-01T00:24:58Z
dc.date.available2021-12-01T00:24:58Z
dc.date.issued2021
dc.identifier.urihttp://hdl.handle.net/11122/12555
dc.description.abstractDespite current and projected future reliance on lithium as a resource, deficiencies remain in genesis models of closed-basin Li brines. Subsurface geochemical interactions between water and bulk solid phases from lacustrine sediments, are shown here to be the most important process for brine genesis and sustainability of the Clayton Valley, NV brine deposit. A new subsurface basin model was developed and used to select Li-bearing solids to test the release mechanisms for Li. Ash (20-350 ppm Li) and bulk sediments (1000-1700 ppm Li) samples across depths in the basin represent the majority of the subsurface Li-bearing materials. Temperature dependent (25-95 oC) batch reaction experiments using low-salinity groundwater from the basin indicate a positive relationship between the amount of Li released and temperature. Four-step sequential extractions on a subset of bulk sediments indicate most Li is released from water and weak acid-soluble portions with approximately 30% of the total Li contained in the sediments released overall. We conceptualize that lithium is released from these samples via three mechanisms: 1) release of adsorbed Li; 2) cation exchange of Li and Mg and; 3) possible minor release from silicate structure at elevated temperatures. Based on these results and the abundance of Li-bearing sediments in the subsurface we estimate the mean Li mass in the basin materials to be between 24.4 to 58.0 Mt. This Li provides a continuous supply from water-rock interactions. This is now the largest known accumulation of Li in a basin-fill continental setting on a global scale.en_US
dc.titleLithium Storage and Release from Lacustrine Sediments: Implications for Lithium Enrichment and Sustainability in Continental Brinesen_US
dc.description.peerreviewYesen_US
refterms.dateFOA2021-12-01T00:24:58Z
dc.identifier.journalGeochemistry, Geophysics, Geosystemsen_US


Files in this item

Thumbnail
Name:
DataTables.xlsx
Size:
51.01Kb
Format:
Microsoft Excel 2007
Description:
File contains all supplemental ...

This item appears in the following Collection(s)

Show simple item record