There are two types of deposits in the Concepcion de Oro region: skarn-replacement and porphyry style. Historic mining focused on higher-grade skarn-replacement mineralization including mantos and and chimney form breccias. These deposits are closely related to and contained within an intrusive typical of classic “porphyry style” gold mineralization.

More recent exploration has confirmed broad zones of porphyry style mineralization including gold-bearing disseminations and quartz and fracture stockwork related to a granodiorite stock.