Glenstar Minerals (CSE:GSTR) Charts Green Monster Progress as Exploration Momentum Builds

2 min read | June 17, 2026 09:37 PM EDT | By Sonal Goyal

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Glenstar Minerals (CSE:GSTR) Charts Green Monster Progress as Exploration Momentum Builds — Image source: Company Update

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Highlights

Phase 1 drilling at Green Monster intersected over 30% zinc, 36% copper, 5.7 oz/t silver, 0.0523% nickel, and 0.0019% cobalt in discovery hole GMST-4.

The high-grade mineralized zone was encountered between 131m and 142m depth within the hanging wall of the Green Monster Fault Zone.

Assays identified gallium values of up to 50 g/t.

Phase 2 drilling completed six reverse circulation holes totalling about 3,320 feet, confirming multiple polymetallic mineralized zones.

Glenstar is evaluating Terean geophysical survey technology and other advanced exploration tools to improve understanding of the property's geological structures.

Glenstar Minerals Inc. (CSE:GSTR) (OTCQB:GSTRF) (FRA:VO20) has provided a comprehensive update on its Green Monster Project in Clark County, Nevada, outlining milestones achieved since the launch of its Phase 1 drilling program in May 2025. Over the past year, the company has completed two drilling campaigns, identified high-grade polymetallic mineralization, expanded its geological understanding through geophysical surveys, and begun assessing advanced technologies to support future target development and drilling initiatives.

Phase 1 Drilling Uncovers High-Grade Polymetallic Zone

Initial reverse circulation drilling program, conducted in May 2025, led to the identification of a significant polymetallic mineralisation zone at the project. Assays from drill hole GMST-4 returned grades of over 30% zinc, 36% copper, 5.7 ounces per tonne silver, 0.0523% nickel, and 0.0019% cobalt.

The mineralized interval, encountered at depth between approximately 131m and 142m, occurs in the hanging wall of the district-scale Green Monster Fault Zone. The discovery hole targeted a magnetic anomaly identified during previous exploration programs and subsequently became the project's primary ‘discovery’ area.

GSTR shares traded at CAD 0.20 per share, up over 11%, on 17 June 2026.

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