Sonora
RIVERSIDE RESOURCES COMPLETES FIRST FINANCING FOR RAVENA RESOURCES CORP. IN ADVANCE OF PROPOSED TSX VENTURE SPINOUT
TOCVAN ENTERS INTO DEFINITIVE AGREEMENT TO ACQUIRE REMAINING 49% INTEREST IN ORIGINAL PILAR CONCESSIONS, CONSOLIDATING 100% OWNERSHIP OF FLAGSHIP GRAN PILAR GOLD-SILVER PROJECT
Mexico’s Best Copper Drilling Intercepts, Second Quarter 2026
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.
RIVERSIDE RESOURCES AND QUESTCORP COMPLETE GEOPHYSICS PROGRAMS AND CONTINUE DRILLING AT LA UNION PROJECT
Questcorp and Riverside Resources Complete Complementary Geophysics Programs as Drilling Continues at La Union Project
Zacatecas Silver Announces Completion of Phase Two Sampling at Oso Negro, Sonora
Minaurum Extends High-Grade Quintera Vein at Depth with 5.95 m of 1,117 g/t Silver Equivalent; Europa Sur Returns 3.65 m of 888 g/t AgEq
First Majestic Reports Q2 2026 Production Results; Announces Updated 2026 Production and Cost Guidance, and Q2 Conference Call Details
Mexico’s Best Silver Drilling Intercepts, Second Quarter 2026
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.
