Corcel finds historical tungsten, graphite at Yuma King

Executive Summary

• Corcel Exploration Inc. has identified significant historical occurrences of tungsten and graphite, both designated as critical minerals by the U.S. government, at its 100%-owned Yuma King project in Arizona.
• The company highlights high-grade tungsten assays (up to 19.15% WO3) within the Three Musketeers district and broad tungsten-in-soil anomalies extending beyond known historical mines.
• Graphite and graphene-bearing mineralization was previously intersected in drilling (2011–2016), with a reported 150-metre thick interval containing a 25-metre zone of high carbon content (approx. 89% carbonaceous mudstone).

Key Details

• Project Location: Yuma King project, Arizona, USA; 100% owned by Corcel Exploration.
• Tungsten Findings:
  • High-grade occurrences identified across a five-square-kilometre district.
  • Historic production and assays from the Three Musketeers district returned up to 19.15% WO3.
  • Corcel’s 2024 surface geochemical sampling identified broad tungsten-in-soil anomalies extending beyond the Three Musketeers area.
  • Tungsten occurs predominantly as scheelite within quartz veins, greisen-altered zones, and thrust faults.
  • Historical mining occurred at prospects including Three Musketeers, Jewel Anne, Pee Wee, Ace, and Trioni claims, with intermittent production from the early 1950s through the 1970s.
• Graphite and Graphene Findings:
  • Mineralization first identified in 2011 by Vane at the Yellowbird deposit.
  • Drill hole AV-2 intercepted a ~150-metre thick carbonaceous phyllitic metamudstone body.
  • A 25-metre interval within this section consists of approximately 89% carbonaceous mudstone.
  • 2015 follow-up confirmed graphite with significant graphene via Raman spectrometry.
  • 2016 drilling by Cash Capital (1,220 metres across four holes) demonstrated the mineralized horizon extends southward, though precise locations and data are currently unavailable.
• Strategic Context:
  • Tungsten and graphite are listed as critical minerals by the U.S. Department of the Interior and essential to national defense.
  • The U.S. is currently entirely reliant on imports for both commodities.
  • Tungsten is used in electronics, aerospace, and defense; graphite is critical for lithium-ion battery anodes and energy storage.
• Future Plans:
  • Corcel will incorporate historical tungsten and graphite data into the broader geological model for the Yuma King project.
  • This work is parallel to the company's copper-gold exploration strategy to assess if these critical mineral systems warrant follow-up evaluation.
• Technical Verification:
  • Data compiled from historical mining data, drilling logs, geochemical sampling, and technical assessments by prior operators.
  • Data has not been verified by Corcel Exploration due to inaccessible original materials.
  • Qualified Person: Roy Greig, PhD, PGeo, has reviewed and approved the technical content but noted the inability to verify historical data.

Notable Quotes

• "The available historical records indicate that the Yuma King project contains multiple areas where tungsten and graphite mineralization were documented and, in some cases, mined on a small scale," commented Jon Ward, chief executive officer of Corcel Exploration. "Our objective is to review this historical data to determine whether these targets merit systematic follow-up alongside our copper-gold exploration plans."