Nine companies released copper results from ten drilling programs in Mexico during the second quarter of 2026. The best copper intercept is, as in the first quarter, from Luca Mining’s drilling at Campo Morado in Guerrero, with 118.2 m averaging 0.76% Cu. The underground diamond drilling results are from the Largo Norte Zone, which “… is a large, 650m long, consistent mineralized VMS body that dips shallowly to the south and ranges from 20 to 60 meters in thickness”.

Intermediate sulfidation epithermal systems represent 50% of the reported copper result, although all in the bottom half of the table. Alamos Silver, Tahuehueto, Zacualpan, Gavilanes and Gran Pilar (this one as a distal part of a porphyry copper system) fall into this category. Santo Tomás is the only porphyry copper deposit with published results, Dios Padre is a strongly zoned Au-Cu-Ag breccia related to a porphyry copper system whereas Adelita can be defined as a skarn distal to a porphyry copper system. Cosalá presents skarn and carbonate replacement (CRD) mineralization.

Looking at a table like this one it is no apparent that over 80% of the copper produced in Mexico comes from porphyry copper deposits, with the bulk of it originating on the Buenavista del Cobre and La Caridad mines in Sonora.