The Solidaridad deposit is a gold, silver, copper deposit within Guerrero Terrain of southern Michoacan. Cross cutting quartz sulfide veins, currently characterized as mesothermal veins, are hosted within a sedimentary sequence of black shales, siltstones and quartzites consistent with a shallow marine continental margin of Pliocene Miocene age. Andesite sills are present within the sedimentary sequence. The sedimentary units unconformably overlie a porphyritic rhyolite of Miocene Oligocene age. Interpreted diorite intrusions have been mapped on the surface. To the south of the previously drilled "Main Zone" a massive sulfide deposit has been identified. The area, Cuendeo, is the focus of the 2010 drilling campaign. Petrographic studies have identified hypogene sulfides, predominantly pyrite and chalcopyrite.