Data for: Ferro-manganese nodules and crusts from the Kara Sea: mineralogy, geochemistry and genesis

Table captions: Table 1. Description and location of samples analyzed during this study. Table 2. Results of XRD study. Table 3. Bulk chemical composition of studied samples from Kara Sea (XRF data; wt. %). Table 4. Geochemical data for samples from Kara Sea (ICP-MS data; ppm).