[Rockhounds] Fossil Fish and Rare Earths Deposits

[Paul]

In addition to waste phospho-gypsum / phosphogypsum
the processing of Florida Phosphate Rock, people
are looking at recovering rare earths elements from
underclays, ancient paleosols, that underlie coal seams.

Go see:

Plechacek, A., Montross, S.N. and Verba, C.A., 2018.
The search for rare earths elements and critical
metals in underclay deposits (No. NETL-PUB-21991). NETL.
https://www.osti.gov/servlets/purl/1530836

Plechacek, A., Montross, S.N. and Verba, C.A., 2018.
Petrophysical properties of underclay deposits
associated with the Pittsburgh and Brookville coal
seams (No. NETL-PUB-21987). NETL.
https://www.osti.gov/servlets/purl/1530836

Yang, J., Montross, S., Britton, J., Stuckman, M.,
Lopano, C. and Verba, C., 2020. Microanalytical
Approaches to Characterizing REE in Appalachian
Basin Underclays. Minerals, 10(6), no.546.
https://www.mdpi.com/2075-163X/10/6/546
https://www.mdpi.com/2075-163X/10/6/546/pdf

Birk, D. and White, J.C., 1991. Rare earth elements
in bituminous coals and underclays of the Sydney
Basin, Nova Scotia: Element sites, distribution,
mineralogy. International Journal of Coal Geology,
19(1-4), pp.219-251.

Seatearth - underclay
https://en.wikipedia.org/wiki/Seatearth

Yours,

Paul H.