Glenstar Minerals Inc. (CSE: GSTR, OTCQB: GSTRF, FRA: VO20) announced on October 7, 2026 that it has received the final report from the Terēan Shear-Wave Seismic Geophysical Survey at its Green Monster Project in Clark County, Nevada. The survey identified laterally persistent low-velocity anomalies that correlate with the high-grade polymetallic discovery zone intersected in drill hole GMST-4. The results are being used to select follow-up drill targets, representing a meaningful step forward for a project that has already returned zinc grades exceeding 30% alongside silver and base metals.

Key Points

  • Glenstar Minerals Inc. (CSE: GSTR, OTCQB: GSTRF, FRA: VO20) released final seismic survey results for its Green Monster Project in Nevada
  • Four survey lines across a 150 × 300-metre area imaged the subsurface to depths exceeding approximately 600 feet, identifying structural targets for follow-up drilling
  • Previous drilling confirmed grades of greater than 30% zinc, 5.7 oz/t silver, and elevated nickel, cobalt, and copper at depths of approximately 131 to 142 metres
  • Investors may be watching for the Company's selection and announcement of next-stage drill targets identified from the seismic data

Terēan Seismic Survey Confirms Structural Complexity at Green Monster Discovery Zone

Glenstar commissioned the Terēan Shear-Wave Seismic survey to investigate a void encountered in discovery drill hole GMST-4, assess its relationship to a suspected fault-controlled zone of weakness, and determine whether fractured or weakened rock could be traced laterally away from the borehole. Four deep survey lines covering 150 × 300 metres delivered continuous imaging to depths exceeding approximately 600 feet. The sections revealed laterally persistent mechanical units, abrupt velocity discontinuities, structural offsets, and localised low-velocity zones interpreted to reflect variations in rock competence, fracturing, alteration, dissolution, and lithology, consistent with the lithostratigraphy encountered during the Phase 2 drill programme.

Low-Velocity Anomalies Match High-Grade Polymetallic Mineralisation From Prior Drilling

Project geologist Bob Marvin, P.Geo., the NI 43-101 Qualified Person for the disclosure, stated that the mapped seismic data clearly identified extension targets whose distinct low-velocity zones correspond in detail with the decalcified and strongly mineralised zone found in discovery hole GMST-4. Previous drilling in May 2025 at that hole intersected mineralisation grading greater than 30% zinc, 5.7 oz/t silver, 0.0523% nickel, 0.0019% cobalt, and greater than 0.36% copper at depths of approximately 131 to 142 metres, occurring in the hanging wall of the district-scale Green Monster Fault Zone.

Phase 2 Drilling Established Geological Complexity Driving Seismic Investigation

The Phase 2 programme comprised six holes drilled to depths ranging from 152 metres to 178 metres, totalling approximately 1,012 metres of drilling from three drill pads. The holes encountered highly fractured rock with abundant clay alteration, brightly coloured orange and red oxide minerals, and decalcification. Assay results confirmed that the area surrounding GMST-4 is mineralised and geologically complex. The Green Monster Property covers approximately 700 acres across 35 federal lode claims, situated roughly 40 miles southwest of Las Vegas, and had no drilling history prior to the Company's programmes commencing in May 2025.