Sonoro Gold Expands Cerro Caliche With Concession Acquisition

Canada-based mining company Sonoro Gold announced it acquired mineral concessions next to its Cerro Caliche project in Sonora. The company considers this acquisition to expand the exploration potential, as well as expanding the known mineralization corridors. 

Sonoro Gold executed the Assignment of Rights Agreements through its Mexican subsidiary, Minera Mar de Plata, to acquire 10 mineral concessions adjacent to Cerro Caliche. The acquisition adds 2,574.16ha to the property, bringing the total contiguous area to 3,924.26ha across 25 concessions.

As a result, Sonoro Gold will pay a total consideration of US$4 million in annual installments of US$1 million over the next four years. Additionally, Sonoro Gold will assume responsibility for approximately US$570,000 in outstanding mineral concession fees. The transaction does not involve the issuance of securities or the granting of royalty interests, the company noted.

The newly acquired land potentially extends known mineralized corridors to the northwest and southeast of the existing project boundaries. Historical data from prior exploration programs, including seven diamond drill core holes completed in 2011 at the El Batamote zone, identified geological characteristics comparable to the project’s El Rincon-Bellotoso zone. 

Historical mine workings along the southern boundaries further suggest the continuation of gold mineralized zones. “Our primary objective remains initiating production on Cerro Caliche’s central mineralized zones and utilizing generated cashflow for future exploration and potential resource expansion,” noted Kenneth Macleod, President and CEO, Sonoro Gold 

Cerro Caliche’s Achievements

The Cerro Caliche project is an open-pit gold-silver mining project. The March 2023 Mineral Resource Estimate (MRE) outlines indicated resources of 19.9Mt containing 280,000oz of gold at 0.44g/t, 2.24Moz of silver at 3.5g/t, and 290,000oz AuEq at 0.46g/t. Inferred resources are 10.5Mt with 140,000oz of gold at 0.42g/t, 1.35Moz silver at 4g/t, and 150,000oz AuEq at 0.44g/t. 

The project design includes a downstream conveyor belt to transport ore from the mine to the process plant, reducing dust and noise generation, CO2 emissions, fossil fuel consumption, and operating costs. The plan also includes filling shallow pits with waste rock during operations and using organic waste for composting, as reported by MBN.

Cerro Caliche is currently in the final permitting stage for a proposed open-pit, heap leach mining operation. The project hosts over 25 northwest-trending gold mineralized zones. In November 2025, the company began preparing an updated Preliminary Economic Assessment (PEA) based on drilling and assay data from approximately 30% of the identified zones. Sonoro anticipates completing this updated PEA during 1Q26.

The project is included in the 83 active projects monitored by the federal government as of December 2025. This period marked a federal reactivation of environmental and water permitting, which has unlocked an estimated US$11 billion mining investment pipeline across the country, as reported by MBN.