Studies on the geochemical zonation patterns in the Lepanto copper-gold deposit have taken into account the lateral variations across individual veins, regional variations following the shape of the ore body from NW to SE and the vertical variations from levels 1200 down to 700.

In the lateral zoning of trace elements across veins, Ba and Al show a consistent sudden decrease in values near or within the veins, while Ca, Na and K values show a progressive decrease towards the veins. The higher values of Ca, K, and Na in the veins at lower levels could be attributed mainly to the abundance of anhydrite and alunite in the veins, while the increase of K values in the wall rock at higher levels could be due to the increased amounts of illite alteration and overprinting. Regional zonation patterns of trace-element values have a consistent decreasing trend from the SE to NW. There is also a positive correlation of certain trace elements with Cu and Au and this could be attributed to the significant magmatic contribution of the trace elements.

The different geochemical zoning patterns might be specific for the high sulfidation deposits in the Mankayan mineral district. However, they could be used as references or exploration guides in the search for similar deposits in other mineral districts.