Sendero Resources Corp. (TSXV: SEND) (FSE: 9O40) has made two interactive 3D magnetic inversion models of its Peñas Negras Project in La Rioja, Argentina publicly available on its website. The models allow investors and the public to explore project-scale geology and historical drillhole data directly in a web browser. The release follows a technical update dated October 8, 2026, in which the company first presented the three-dimensional magnetic interpretation of the project.

Key Points

  • Sendero Resources Corp. (TSXV: SEND) (FSE: 9O40) announced the public launch of interactive 3D geological models for Peñas Negras.
  • Two models are live: a district-scale Peñas Negras model and a detailed model focused on the La Ollita copper-gold occurrence.
  • Models display four magnetic classes from a Gaussian Mixture Model classification alongside historical drillholes coloured by copper-equivalent grade.
  • Investors may be watching whether the visualisation draws attention to untested deeper portions of the La Ollita system and other targets across the property.

Two Browser-Based Models Cover District Scale and La Ollita Target

The project-scale model covers the full Peñas Negras concession and illustrates the extent of an interpreted lithocap, the distribution of interpreted intrusive centres, and the locations of historical drillholes across the property. A second, more detailed model focuses on the La Ollita copper-gold occurrence, where the company states historical drilling is shallow and sits above an interpreted root zone of magnetite-destructive alteration that extends to depth. The release notes that the deeper portion of the La Ollita system has not been tested by previous drilling campaigns.

Drillhole Data and Magnetic Classifications Integrated in 3D

Each model displays four magnetic classes — interpreted lithocap, magnetite-destructive alteration including near-vertical root zones, andesitic volcanic host rock, and steep pipe-like intrusions — derived from airborne magnetic data inversion and Gaussian Mixture Model classification reported on October 8, 2026. Historical drillholes are plotted in their original three-dimensional coordinates and coloured by copper-equivalent grade using assumptions disclosed in the company's September 23, 2026 news release. Users can rotate views, toggle individual layers, cut custom cross-sections, and hover over drillhole collars to identify individual holes, all without additional software.

Peñas Negras Positioned Within the Vicuña Belt, Argentina

Sendero describes Peñas Negras as a 100%-owned copper-gold exploration project covering a total area of 211.77 km², including an option to earn a 100% interest on eight additional concessions covering 91.7 km². The project is located approximately 12 km north-northeast of the Josemaria resource area and in proximity to several other significant Vicuña Belt projects. The scientific and technical content of the announcement was reviewed and approved by Steven McMullan, P.Geo., a qualified person as defined by National Instrument 43-101. The immediate share price impact was not clear from available public information.