Saturday, July 9, 2011

Deep Sea Rare Earths

This is an unusual discovery and will certainly put a serious lid on both prices and dreams about monopoly been bantered out of China.  Rare Earths are not actually rare and we are now searching.  That they are readily available on the sea bed put paid to those intentions.

We will see mud pumping to possibly generate a concentrate.  Since a square kilometer is a serious piece of the market, supply issues are about to disappear.

It may still be just too soon to write off the present bull on these metals but it is certainly time to become defensive.

Deep-sea mud in the Pacific Ocean as a potential resource for rare-earth elements

Nature Geoscience

19 May 2011

World demand for rare-earth elements and the metal yttrium—which are crucial for novel electronic equipment and green-energy technologies—is increasing rapidly123. Several types of seafloor sediment harbour high concentrations of these elements4567. However, seafloor sediments have not been regarded as a rare-earth element and yttrium resource, because data on the spatial distribution of these deposits are insufficient. Here, we report measurements of the elemental composition of over 2,000 seafloor sediments, sampled at depth intervals of around one metre, at 78 sites that cover a large part of the Pacific Ocean. We show that deep-sea mud contains high concentrations of rare-earth elements and yttrium at numerous sites throughout the eastern South and central North Pacific. We estimate that an area of just one square kilometre, surrounding one of the sampling sites, could provide one-fifth of the current annual world consumption of these elements. Uptake of rare-earth elements and yttrium by mineral phases such as hydrothermal iron-oxyhydroxides and phillipsite seems to be responsible for their high concentration. We show that rare-earth elements and yttrium are readily recovered from the mud by simple acid leaching, and suggest that deep-sea mud constitutes a highly promising huge resource for these elements.

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