Abstract A combined geological and geochemical survey in southeast Negros, Philippines, led to the delineation of extensive areas of alteration with mineral assemblages which range from shallow-level advanced argillic type, through silicification to deeper level propylitization. These alteration types did not result from the same episode of epithermal activity; rather, the field relationships and incompatible mineral assemblages indicate at least two episodes. On the basis of the lithogeochemical data, each alteration type was characterized by its associated element suite. The advanced argillic alteration zones are typified by enrichments of thallium and native sulphur. Such areas are also enriched in arsenic but conspicuously lack mercury. Zones of silicification are identified by an almost exclusive presence of Au and Ag together with appreciable quantities of Sb, Hg and Bi. In the silicified zones, this suite of elements is further accompanied by Cu, Mo and Te which also form strong patterns in propylitized zones. Manganese and zinc patterns appear to characterize areas of propylitization and strengthen patterns produced by Cu, Mo and Te. Several areas of silicification with precious metal anomalies constitute targets for further exploration.