Guerrero

Mexico’s Best Lead and Zinc Drilling Intercepts, Second Quarter 2026

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Thirteen companies released lead and/or zinc results from fourteen drilling programs in Mexico during the second quarter of 2026. The best results for both lead and zinc come from a volcanogenic massive sulfides (VMS) deposit: Luca Mining’s Campo Morado mine in Guerrero, with a core length interval of 100.70 m averaging 0.7% Pb, 2.6% Zn.

Eight of the twelve properties present intermediate sulfidation epithermal mineralization, including Copalito, Tahuehueto, Zacatecas Silver, San Marcial-Plomosas, Zacualpan, Cruz de Plata, Gavilanes and Alamos Silver. Gran Pilar also displays intermediate sulfidation epithermal mineralization, probably distal to a porphyry copper system. The Claudia project in Durango presents mainly low sulfidation epithermal mineralization, but the intervals here included represent some intermediate sulfidation mineralization. Cerro Las Minitas, Cosalá and La Parrilla can be described as skarn and carbonate replacement systems, the latter presenting also intermediate sulfidation mineralization.

To note is that eleven of the fourteen properties with reported lead-zinc intercepts are localized in only three adjacent states: Sonora, Sinaloa and Durango.

Mexico’s Best Copper Drilling Intercepts, Second Quarter 2026

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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.

Mexico’s Best Silver Drilling Intercepts, Second Quarter 2026

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Nineteen companies released silver results from twenty drilling programs in Mexico during the second quarter of 2026. The highest silver intercept is from GRSilver Mining at the San Marcial deposit within its extensive Plomosas project in Sinaloa, with an impressive 45 m intercept averaging over 1,600 gpt Ag. The interval includes an 8.6 m subinterval over 8,600 gpt Ag on this step-out hole that intercepted the chlorite-hematite rich breccia in the contact between a Jurassic volcanosedimentary unit and Oligocene volcanic rocks. The multi-stage hydrothermal breccias present are overprinted by polymetallic intermediate sulfidation epithermal mineralization.

Over sixty percent of the projects in this table correspond either to intermediate or low sulfidation epithermal mineralization systems. The more numerous are those of intermediate sulfidation affinity, including San Marcial, Cruz de Plata, Zacualpan, Gavilanes, Coplaito, Alamos Silver, Zacatecas Silver, Tahuehueto,  Low sulfidation epithermal systems in the list comprise Copalquín, Terronera and Claudia, while La Colorada (Sonora) adscription remains debatable. Gran Pilar presents characteristics of intermediate sulfidation epithermal affinity, distal to a porphyry copper system.  

The rest of the properties display some of the variety of silver mineralization in the country. Cosalá and Cerro Las Minitas present skarn and carbonate replacement (CRD) mineralization styles, while La Parrill adds intermediate sulfidation epithermal mineralization to that mix and Adelita is a skarn distal to porphyry copper style intrusions. Campo Morado is the only volcanogenic massive sulfides (VMS) property in the table and Santo Tomás is the only porphyry copper deposit. Dios Padre is a strongly zoned breccia associated with porphyry copper style intrusions.

By State, Durango has seven entries in the table, Sonora five and Sinaloa four, while Estado de México, Guerrero, Jalisco and Zacatecas have one each.

Mexico’s Best Gold Drilling Intercepts, Second Quarter 2026

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Companies working in Mexico released results from drilling campaigns in twenty properties during the second quarter of 2026. The highest gold intercept was, again, at Heliostar’s Ana Paula project in Guerrero, with almost 100 m averaging 10.90 gpt Au. Ana Paula is part of the Guerrero Gold Belt, presenting skarn and replacement mineralization with significant gold in sulfide rich breccias, with an uncommon late epithermal overprint. Other projects displaying skarn/replacement mineralization include Adelita (considered as distal to a porphyry copper system) in Sonora and Cosalá in Sinaloa. The only volcanogenic massive sulfides (VMS) deposit in the list, Campo Morado, in Guerrero, attained again the second place with its long multigram gold intervals. The third property in the list, Dios Padre, is characterized by strongly zoned breccias related to porphyry copper style intrusions in the Santa Rosa de Yecora district in Sonora.

Epithermal systems represent over 60 percent of the entries in the table below. Intermediate sulfidation epithermal deposits are the most numerous, although more common in the lower part of the table as these tend to display lower grades. Included in this category are Zacualpan, Copalito, Tahuehueto, Zacatecas Silver, Cruz de Plata, Alamos Silver, San Marcial and Gavilanes. Low sulfidation epithermal deposits include La Colorada? (Sonora), Copalquín, Claudia and Terronera. The question mark on La Colorada arises from some of its characteristics not being that clear (Heliostar geologists disagree on the question mark).

Santo Tomás is a porphyry copper system and San Antonio a clear example of an iron oxide copper gold (ICOG) mineralization system.

Summarizing, thirteen of the twenty properties on the list are epithermal systems, three present some type of skarn mineralization, one is a breccia related to a porphyry copper system, another one a volcanogenic massive sulfides (VMS) deposit, other one a porphyry copper system and one more an IOCG system.