Considerable metal enrichments have been found in hydrothermalXuids and metalliferous sediments oV the central Lesser Antilles Volcanic Arc. The elements variably enriched in the Xuids as a result of the hydrothermal activity are Fe, Mn, As, Si, B, Li and in the sediments, Fe, P, Mo, As, Sb, Hg, Cu and Pb. Variations in the concentrations of these elements in both Xuids and sediments along the arc result from a number of factors, the most important of which is the stage that each island's volcano has reached in its eruptive cycle. Although hydrothermal mineralization on the seaXoor oV the islands is only low grade, phase separation in the hydrothermal Xuids at depth could be leading to higher grade stockwork mineralization below the vent Welds or the discharge of metal rich brines on the lower Xanks of the volcanic islands.