Editing Lithium carbonate (section)

=== From "geothermal" brine ===

A potential source of lithium is the leachates of [[Geothermal electricity|geothermal wells]], carried to the surface.<ref name="bourcier">Parker, Ann. [https://www.llnl.gov/str/JanFeb05/Bourcier.html Mining Geothermal Resources] {{webarchive|url=https://web.archive.org/web/20120917035952/https://www.llnl.gov/str/JanFeb05/Bourcier.html |date=17 September 2012 }}. Lawrence Livermore National Laboratory</ref> Recovery of lithium has been demonstrated in the field; the lithium is separated by simple precipitation and filtration.<ref name="Simbol">Patel, P. (16 November 2011) [http://www.technologyreview.com/news/426131/startup-to-capture-lithium-from-geothermal-plants/ Startup to Capture Lithium from Geothermal Plants] {{Webarchive|url=https://archive.today/20130203195827/http://www.technologyreview.com/news/426131/startup-to-capture-lithium-from-geothermal-plants/ |date=2013-02-03 }}. technologyreview.com</ref> The process and environmental costs are primarily those of the already-operating well; net environmental impacts may thus be positive.<ref name="NYT">Wald, M. (28 September 2011) [https://www.nytimes.com/2011/09/28/business/energy-environment/simbol-materials-plans-to-extract-lithium-from-geothermal-plants.html Start-Up in California Plans to Capture Lithium, and Market Share] {{webarchive|url=https://web.archive.org/web/20170408033249/http://www.nytimes.com/2011/09/28/business/energy-environment/simbol-materials-plans-to-extract-lithium-from-geothermal-plants.html |date=8 April 2017 }}. The New York Times</ref>

The brine of [[United Downs Deep Geothermal Power]] project near [[Redruth]] is claimed by [[Cornish Lithium]] to be valuable due to its high lithium concentration (220&nbsp;mg/L) with low magnesium (<5&nbsp;mg/L) and total dissolved solids content of <29g/L,<ref>{{cite web |title=Cornish Lithium Releases Globally Significant Lithium Grades |url=https://cornishlithium.com/company-announcements/cornish-lithium-releases-globally-significant-lithium-grades/ |website=Cornish Lithium |date=17 September 2020 |access-date=17 July 2021 |archive-date=17 July 2021 |archive-url=https://web.archive.org/web/20210717144259/https://cornishlithium.com/company-announcements/cornish-lithium-releases-globally-significant-lithium-grades/ |url-status=live }}</ref> and a flow rate of 40-60l/s.<ref name="BBC"/>