Ferromanganese nodules and crusts chemical analyses from SIO outside of the International Decade of Ocean Exploration (IDOE) program

The data encoded in the Scripps Institute of Oceanography Nodule Data Bank (SNDB) was used as a model for the publication of USGS Ferromanganese Crusts Data Bank. The chemical composition od SIO samples were determined using X-ray fluorescence spectroscopy (XRF). Samples were oven-dry, heated at 110°C overnight or the equivalent.