Sandra Project

40 km north of Tepehuanes • 180 km north of Durango, Durango State, Mexico

Silver-gold exploration property covering multiple epithermal quartz veins, disseminated horizons and breccia structures within the prolific “Mexican Silver Trend.”

Sandra Project Overview

The Sandra Silver-Gold Project is located in Durango State, Mexico, approximately 40 km north of Tepehuanes and 180 km north of the city of Durango. The project lies within the prolific Mexican Silver Trend, a region known for large epithermal silver-gold deposits.

Sandra covers a broad mineralized district hosting multiple epithermal quartz veins, breccias, and disseminated mineralized horizons. The project includes the Boleras Silver Deposit, which hosts a NI 43-101 compliant inferred mineral resource.

Local infrastructure and access are strong:

  • Paved road access to the project area
  • Existing power and water infrastructure nearby
  • Located near established mining communities
  • Operable year-round
  • 6,976 hectares (17,860 acres) of mineral concessions
  • Joint venture with Pan American Silver (60%) and Orex (40%)

Established Silver-Gold District

Located within the prolific Mexican Silver Trend, hosting multiple epithermal silver-gold systems across a broad mineralized district.

Strategic Joint Venture

Joint venture with Pan American Silver (60%) and Orex (40%), combining technical expertise with strong financial backing.

Defined Silver Resource

Home to the Boleras Silver Deposit, which hosts a NI 43-101 compliant inferred mineral resource within a larger exploration footprint.

Strong Infrastructure & Access

Year-round access via paved roads, nearby power and water infrastructure, and proximity to established mining communities.

Sandra Mining District

The Sandra Project is located within the prolific Mexican Silver Trend, a region extending across central Mexico that hosts many of the world’s largest and most productive silver districts.

This mineralized trend is renowned for large epithermal silver-gold systems and has supported centuries of continuous mining activity.

Major silver deposits within the Mexican Silver Trend include:

  • Fresnillo – Largest primary silver mine globally and past billion-ounce producer.
  • Guanajuato – Historic district with over one billion ounces of past silver production.
  • La Colorada – Producing silver mine operated by Pan American Silver.
  • La Pitarrilla – Large-scale silver development project in Durango State.
  • La Preciosa – Advanced silver development project formerly operated by Orko Silver.
  • Zacatecas – Historic silver camp with hundreds of millions of ounces produced.

Joint Venture Agreement with Pan American Silver

The Sandra Silver-Gold Project is being advanced under a joint venture agreement between Orex Minerals Inc. and Pan American Silver Corp. This partnership enables collaborative exploration, shared technical expertise and disciplined development planning across the Sandra land package.

  • Ownership: 40% Orex Minerals • 60% Pan American Silver
  • Land Package: 6,976 hectares of mineral concessions
  • Agreement Type: Joint venture with shared technical oversight
  • Collaboration: Integrated geological data, historic datasets and exploration results
  • Exploration Benefits: Access to large-scale silver development expertise and infrastructure