Surface sediment Fe sequential extraction data from slope to deep sea in northwest Black Sea (PHOXY cruise, June 2013) - Kraal, Peter; Dijkstra, Nikki; Behrends, Thilo; Slomp, Caroline P (In supplement to: Kraal, P et al. (2017): Phosphorus burial in sediments of the sulfidic deep Black Sea: Key roles for adsorption by calcium carbonate and apatite authigenesis. Geochimica et Cosmochimica Acta, 204, 140-158, https://doi.org/10.1016/j.gca.2017.01.042, 2018)