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Mining industry

Questcorp Mining Inc. Commences Drilling on La Union Project in Mexico

Strategic Insights

— 2 min read

Questcorp Mining Inc., a mineral exploration company, has commenced drilling on its La Union Project in northwest Sonora, Mexico. The drilling is being carried out by property vendor and operator Riverside Resources Inc. The goal of the initial drill program is to expand known zones of mineralization, test new targets, and explore areas surrounding multiple historical mine workings within the 25 km² project area.

Key Takeaways:

  • The initial drill program will consist of 1,500m of diamond core drilling across six holes, each averaging 250m in depth.
  • The drilling will test the carbonate-hosted replacement deposit (CRD) style of mineralization, with gold associated with mantos, chimneys, and along structural zones.
  • Angled drill holes are aimed at cutting perpendicular to stratigraphic targets and some structural targets, which is typical in CRD systems.
  • The exploration work over the past three months by Riverside has improved the understanding of the structural geology and stratigraphy in the Sierra El Viejo.
  • The La Union district lies along the flanks of the Sierra El Viejo range, where these updated interpretations help guide current exploration efforts.
  • The exploration target focus is for a large potential gold discovery that expands from previous smaller-scale mine operations on the property.
  • The drill program will begin to test the new concepts and expand past previous mining.
  • The four areas being targeted for drilling include:

+ Union Main Mine Area

+ North Union Mine Area

+ Cobre Mine Area

+ Central Union Area

  • Initial work by members of the Riverside team, drawing on more than two decades of geological compilation and analysis, further confirmed the region as highly prospective.
  • Historical mining by the Penoles Mining Company targeted chimney and manto-style replacement bodies within the upper oxide zones, leaving immediate and compelling drill targets for further exploration in the underlying sulfide zones.

Statistics:

  • 1,500m of diamond core drilling across six holes, each averaging 250m in depth.
  • The project area covers 25 km².
  • The exploration target focus is for a large potential gold discovery that expands from previous smaller-scale mine operations on the property.
  • 50,000 ounces of gold were produced in the area through previous mine operations.
  • The drill program will consist of one to three holes per area, primarily for orientation purposes, to evaluate the scale of alteration and indications of a mineralized system.

Sources:

  • Newsfile Corp. (August 6, 2025)
  • Questcorp Mining Inc. (CSE: QQQ)
  • Riverside Resources Inc. (TSXV: RRI)
  • NI 43-101 Technical Report on the Union Project, State of Sonora, Mexico (dated effective May 6, 2025) available under Questcorp's SEDAR+ profile.

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