Five buried ferromanganese nodules were recovered at different depths of 167-169 cm (A), 172 174 cm (B), 228 230 cm (C), 328 330 cm (D) and 418 420 cm (E) in a 5 m sediment core from the siliceous sediment of Central Indian Basin (Lat 9°00' S, Long 76°00'E) at a water depth of 5260 m These nodules were analysed for major, trace and rare earth element (REE) concentrations to understand their genesis and compare with the surface and buried nodules in the top 1 m of the sediment column from the same basin Nodules A, B, C arc of an early diagenetic (Mn/Fe ratio between 9 3 and 15 1), nodule D is of hydrogenetic (Mn/Fe ratio 1 6) and nodule E is of diagenetic (Mn/Fe ratio 3 0) origin Total REE concentration ranges between 164 and 497 ppm (av-348 ppm) and is nearly 2 to 3 fold lower than the surface and buried nodules REE are conveyed from the seawater to the nodules in association with a combined phase consisting of Fe - Ti - P The shale (NASC) - normalized REE pattern displays a small convex pattern with a positive Ce-anomaly indicating an oxidized environment while, the presence of positive Eu-anomal) in nodules A, B and C probably suggest an aeolian dust These buried nodules show a moderate middle and heavy REE enrichment (strong in nodules B and C) compared to light REE, but fractionation between middle and heavy REE is not very clear It appears that not much significant post -depositional changes have occurred in these buried nodules