By Jamie Hyland, MiningIR
As silver prices surge to US$65.72 per ounce, attention is rapidly returning to large-scale primary silver projects—particularly those located in secure jurisdictions with the potential to contribute to domestic supply. Among the companies gaining renewed investor interest is Apollo Silver Corp. (TSX-V: APGO | OTCQB: APGOF | Frankfurt: 6ZF), a silver exploration company advancing one of the most significant undeveloped silver assets in the United States.
Apollo Silver’s flagship Calico Silver Project, located in California’s historic Calico Mining District in San Bernardino County, ranks as the second-largest undeveloped primary silver project in the U.S. Importantly, it is one of the few assets of this scale available to public-market investors at a time when silver has been designated a critical mineral by the U.S. government.
A recently updated mineral resource estimate outlines a large, bulk-minable silver system supported by meaningful barite and zinc credits, adding strategic value beyond silver alone. These additional minerals are increasingly sought after for industrial, infrastructure, and defense applications, potentially enhancing both project economics and permitting prospects.
Crucially, the current resource captures only the Waterloo and Langtry deposits, representing just a portion of the broader mineralized system at Calico. Beyond these defined areas, mineralization extends for more than 6,000 metres of strike length along the Calico Fault, the primary structural control on mineralization across the district. In practical terms, this means Calico’s district-scale footprint remains wide open, offering substantial upside through further exploration and step-out drilling.
While silver is the cornerstone of the project, gold provides an additional layer of optionality. At present, Calico hosts an Inferred gold resource of approximately 130,000 ounces grading 0.25 g/t. However, historical reports from the nearby Burcham area reference gold grades as high as 9.7 g/t, suggesting that higher-grade gold zones may still be waiting to be delineated by modern exploration.
To capitalize on this district-scale opportunity, Apollo has expanded its land position with the acquisition of the 2,215-hectare Mule property immediately east of the main Calico deposits. The Mule property remains largely untested, yet historical sampling has already returned values of up to 654 parts per million silver. The geological setting mirrors favorable stratigraphy and structural features observed elsewhere at Calico, reinforcing the potential for additional discoveries within the broader district.
The policy backdrop is also becoming increasingly supportive. In November, the U.S. Geological Survey (USGS) officially added silver to its 2025 List of Critical Minerals, recognizing its vital role in national security, economic stability, and advanced manufacturing, including supply chains for electric vehicles, solar energy, electronics, and defense technologies. For projects like Calico, this designation is particularly relevant, as inclusion on the Critical Minerals List can support stronger federal engagement, improved inter-agency coordination, and the potential for more efficient permitting pathways. In a state often viewed as challenging for mine development, Calico’s alignment with U.S. critical-mineral priorities—combined with its location on largely patented land and exposure to multiple strategic minerals—could meaningfully improve its permitting and development outlook.
Despite California’s reputation as a challenging jurisdiction, Calico benefits from several key advantages. The project is located in a county with a long mining history, hosts numerous active operations, and is largely situated on patented land. Apollo already holds valid permits and continues to advance technical work, positioning the project for future development as market conditions and regulatory priorities evolve.
With silver trading at historic highs and the U.S. increasingly focused on securing domestic supplies of critical minerals, Apollo Silver’s Calico Project stands out as a rare combination of scale, jurisdictional security, and exploration upside—a profile that could become increasingly valuable as the silver market enters its next phase.
Disclaimer:
This article was prepared by MiningIR and is provided for informational purposes only. It does not constitute investment advice, a recommendation, or an offer to buy or sell any securities. MiningIR is not a registered investment advisor or broker-dealer. Readers should conduct their own independent due diligence and consult with a qualified financial advisor before making any investment decisions.
This article contains forward-looking statements that involve known and unknown risks, uncertainties, and other factors that may cause actual results to differ materially from those expressed or implied. Mineral resources are not mineral reserves and do not have demonstrated economic viability. There is no assurance that any exploration program will result in the delineation of a mineral resource or mineral reserve.
MiningIR may receive compensation from companies featured in its publications and may hold securities of the companies discussed. All market data and metal prices referenced are believed to be accurate at the time of publication but are subject to change without notice.
