Lithium, a preliminary survey of its mineral occurrence in flint clay and related rock types in the United States

Tourtelot, Harry Allison; Brenner-Tourtelot, Elizabeth F.

doi:10.1016/0360-5442(78)90022-1

Cited by 12 publications

(1 citation statement)

References 4 publications

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“…Some clay-rich formations (shales, argillites) and even bauxites could be possible low-grade, large tonnage future sources of lithium. Tourtelot and Brenner-Tourtelot 69 report Li contents of up to 55,100 ppm in one sample of Pennsylvanian age flint clay from Missouri and lower values from similar clays from Pennsylvania (up to 2100 ppm) and Kentucky (up to 890 ppm). In France, Henry et al 70 report up to 858 ppm Li from Aalenian shales of the Dauphinois facies, in the French Alps and of 165 ppm in an argillite from the Paris basin.…”

Section: Conclusion: Multiple Factors Will Drive the Future Availabimentioning

confidence: 95%

Global Lithium Resources and Sustainability Issues

Christmann

Gloaguen

Labbé

et al. 2015

Lithium Process Chemistry

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Section: Conclusion: Multiple Factors Will Drive the Future Availabimentioning

confidence: 95%

Global Lithium Resources and Sustainability Issues

Christmann

Gloaguen

Labbé

et al. 2015

Lithium Process Chemistry

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The Mercer Clay in Pennsylvania as a Polymetallic Mineral Resource: Review and Update

Rozelle

Feineman

White

et al. 2021

Mining, Metallurgy & Exploration

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The Mercer Clay bed in central Pennsylvania has produced feedstocks for the refractory industry in the USA and has also been investigated as a source of alumina and lithium. Developments in global markets for these commodities, as well as rare earth elements, have led to their classification as critical minerals in the USA, in turn renewing production opportunities for the Mercer Clay resource. The work reported here includes a review of the clay types and minerals involved, as well as past mineral processing and extractive metallurgy test work, and reports new research results from renewed investigation of the deposit as a polymetallic resource. This renewed work has found lithium contents that exceed 1,000 ppm, lying directly below the overlying Mercer coal, where the alumina content ranged from 32 to 34 wt%. Total rare earth concentrations were somewhat lower than have been found elsewhere in the region, and the highest contents were also found to be stratigraphically close to the coal. Further work is required to establish the mineral hosts for lithium and rare earths and to define the extent of enriched alumina, lithium, and rare earth concentrations.

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