Drill Results Material +

HER-25-25 Intersects Margins of a New Blind Copper Porphyry System at the Southern Flats Zone, Hercules Project, Idaho

Hercules Metals’ Southern Flats Discovery Adds a Second Copper Porphyry to Its Expanding Idaho Portfolio

By The Northwire Desk — AI Analysis May 26, 2026 · 07:02 BIG · 0.67 Hercules Metals Corp.

Executive Summary

Drill hole HER‑25‑25 at the Southern Flats target intersected 177 m @ 0.66% CuEq (0.56% Cu, 92 ppm Mo, 2.2 g/t Ag, 0.031 g/t Au) within a broader 271 m @ 0.51% CuEq (0.43% Cu, 75 ppm Mo, 2.6 g/t Ag, 0.024 g/t Au).
The geology shows a transition from phyllic to outer potassic alteration, with increasing chalcopyrite‑to‑pyrite ratios westward – indicative of drilling progressing toward a new porphyry centre.
A large magnetotelluric (MT) conductivity anomaly (2.6 km long × 1.3 km wide × 1.2 km deep) under the Southern Flats zone is being tested; hole HER‑26‑01 has been collared 200 m west of HER‑25‑25 to target the central axis.
Maiden drilling has also started at the Pegasus porphyry target ~3.6 km southeast.
The release describes a new blind copper porphyry system at Southern Flats, distinct from the main Leviathan system.

Material Impact

This is the first confirmation of a second copper porphyry centre on the >100,000‑acre Hercules land package. The Southern Flats zone was previously known only from a 10.7 m high‑grade epithermal silver intercept (Dec 2025) and geophysical anomalies; the intersection of copper porphyry‑style mineralization materially upgrades its status from a silver play to a full‑scale porphyry target.
Grades are moderate (0.66% CuEq over 177 m), not as high as the best Leviathan holes (e.g., 1.38% Cu over 113 m), but the width and the vectoring toward a central MT core suggest a potentially large, untested system.
The company just closed a C$31.5 million bought deal at C$0.59/share, so it is well‑funded to aggressively drill this new discovery without immediate dilution risk.
While the discovery is early‑stage (one hole on the margin), it adds a new district‑scale dimension to the story and provides a second potential anchor for a future resource. In our view, the market had not priced in a second porphyry system; this qualifies as genuine new, market‑moving information.
Impact: Material – Positive.

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Company Overview

Hercules Metals Corp. controls a >100,000‑acre land package in Idaho’s emerging porphyry copper belt, anchored by the wholly‑owned Hercules Property and the recently optioned Olympus claims (74,000+ acres from Barrick).
The flagship is the Leviathan porphyry copper system, where drilling since 2024 has defined a hypogene‑enriched system with intercepts such as 670 m @ 0.45% Cu and multiple sub‑intervals exceeding 1% Cu.
In parallel, the company is exploring multiple regional‑scale targets: Southern Flats (now a new porphyry discovery), Pegasus, and Hook, all supported by district‑wide MT and IP geophysics.
The project benefits from large‑scale private surface rights (~3,273 acres) and Idaho’s top‑tier mining jurisdiction ranking.
The company has no reserves or resources yet; a maiden resource estimate is under consideration.

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