The influence of dissolved FeSi 3 O 3 (OH) 0 8 on chemical equilibria in pore waters from deep sea sediments

Details The influence of dissolved FeSi 3 O 3 (OH) 0 8 on chemical equilibria in pore waters from deep sea sediments The influence of dissolved FeSi 3 O 3 (OH) 0 8 on chemical equilibria in pore waters from deep sea sediments

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986gecoa..50..277w&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 50, Issue 2, pp.277-288

Physics

3

Scientific paper

Pore water extracted from unconsolidated fine-grained sediments from the southern Sohm Abyssal Plain contain dissolved iron at concentrations greater than 100 M. In glacial-age sediments deeper than 2.0 m below the sea floor slightly reducing conditions (pE < 4.0) and elevated dissolved SiO 2 concentrations (>300 M) coincide with dissolved iron concentrations which are 2 to 4 orders of magnitude greater than would be predicted by conventional phase equilibria. It is proposed that this Fe exists in a FeSi 3 O 3 (OH) 8 (aq) form and when its solubility is exceeded Fe(OH) 3 or FeSiO 3 can be precipitated.

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