Perpetual Resources Confirms Tungsten Skarn at Nevada Scheelite Project

Perpetual Resources Plants Its Flag in Nevada as Maiden Site Visit Confirms Tungsten Skarn at Surface

Perpetual Resources Ltd (ASX: PEC) has completed its maiden site visit to the Nevada Scheelite Tungsten Project in Mineral County, Nevada, marking the company's first direct technical assessment since entering a binding agreement in June 2026 to acquire the asset. According to the ASX announcement, the visit confirmed that the project's tungsten-bearing skarn system is exposed, accessible and mappable at surface, while six initial rock chip samples have been submitted for assay with results pending.

For investors, the update matters because it shifts Nevada Scheelite from a transaction story to an active field programme. Early geological observations were reported to align with the historical model, and the company has now outlined a practical pathway that includes historical data compilation, drill core review and a modern 3D geological model.

What Did the Maiden Site Visit Confirm?

In the ASX announcement, Perpetual said the July 2026 field visit covered historical mine infrastructure, surface geology, structural features and first-pass rock chip sampling. The work was carried out as an on-ground check of a brownfields tungsten project with a long mining history rather than a greenfields conceptual target.

The site visit reportedly confirmed several points that are directly relevant to future technical work:

• A visible garnet-pyroxene skarn system at surface
• A mappable skarn-limestone contact at two observation points
• North-south trending structural orientation with subvertical to steeply east-dipping geometry
• Alteration minerals including garnet, pyroxene and apple-green epidote
• Accessible historical mine infrastructure including the headframe, mill buildings and shaft collar
• Six rock chip samples collected across the contact zone for laboratory analysis

These are early-stage observations, but they reduce some of the uncertainty that often surrounds historical mining projects. Furthermore, if surface mapping supports legacy interpretations, the company may be better positioned to integrate old drilling, mine records and preserved core into a modern geological framework.

"Completing our first site visit at Nevada Scheelite is an important milestone for Perpetual and provides direct technical confirmation of several key features that drew us to the project," said Julian Babarczy, Executive Chairman.

"Importantly, the structural geometry observed at the surface aligns with the orientation of historical underground development, supporting the historical geological model and providing a strong foundation for the next stage of technical work."

A Brownfields Tungsten Asset with Historical Production

Nevada Scheelite is not an unexplored project. According to the announcement and historical material referenced by the company, the mine has a production and exploration record dating back to 1934.

Key historical metrics include:

The historical operators listed by the company include Nevada Scheelite Corporation, Kennametal Inc., Rawhide Mining, Fallondale Corporation and National Resources Development Inc. For investors, that production history offers evidence that the project has hosted tungsten mineralisation of economic interest in the past, though it does not in itself establish a current resource.

The brownfields setting may still be important. Existing infrastructure, historical workings, archived reports and preserved drill core can lower the amount of early-stage groundwork needed to assess a project properly. The ASX release also stated that the site contains standing infrastructure, including a timber and steel headframe, multiple mill buildings and visible surface workings.

What Did Geologists Observe on the Ground?

The field team examined two main outcrops where the skarn-limestone contact is exposed. In simple terms, this is the boundary between altered rock associated with mineralising fluids and the surrounding limestone host rock. At many skarn deposits, that contact is one of the key places geologists look for ore minerals.

The company reported the following structural observations:

At Outcrop 1, geologists observed garnet-pyroxene skarn in contact with pale limestone, with limestone fragments enclosed within the skarn. This was interpreted as evidence of a reactive skarn-forming environment.

At Outcrop 2, beside the box shaft, the team recorded a measured contact dip of 65° and bearing of 010°. The northern wall exposed granite transitioning into garnet skarn, which the company said supports the interpretation of an intrusive-related tungsten skarn system.

One detail highlighted in the announcement was the observation of an apple-green epidote layer sampled as NVS006. Epidote is a common calc-silicate alteration mineral in skarn systems and can help geologists identify zones close to the mineralising contact.

Rock Chip Sampling and What the Assays May Show

Perpetual collected six rock chip samples, labelled NVS001 to NVS006, across the two outcrop areas. These were not drilling samples and do not represent widths or resource-grade intercepts. Instead, they were designed as first-pass samples to characterise the rock types and alteration seen at surface.

The samples were submitted to American Assay Laboratories in Reno, Nevada. The laboratory programme includes:

1. Sodium peroxide fusion ICP for tungsten
2. 4-acid digest multi-element ICP for 51 elements including molybdenum and bismuth
3. 30g fire assay with ICP finish for gold

This matters because tungsten in scheelite can be difficult to measure accurately if the wrong analytical method is used. The company specifically requested sodium peroxide fusion for tungsten to ensure complete digestion of scheelite-hosted mineralisation.

Assay results are still pending. However, if tungsten and associated pathfinder elements are confirmed in the sampled contact rocks, the data may help validate the field mapping and improve confidence in the historical geological interpretation. Investors should note that these are reconnaissance samples only.

Understanding Tungsten Skarn Geology

For investors less familiar with mining geology, the central concept in this update is the tungsten skarn.

A skarn is a rock formed when hot fluids from an intrusive body such as granite react with nearby carbonate rocks like limestone. That chemical reaction creates a new suite of minerals, often including garnet, pyroxene and epidote. In some systems, the reaction also forms ore minerals such as scheelite, which is a major tungsten mineral.

A simple way to think about it is this:

• Intrusive rock provides heat and mineral-rich fluids
• Limestone provides reactive host rock
• The contact zone becomes the main focus for altered rock and potential mineralisation

At the Nevada Scheelite Tungsten Project, the company reported a contact between intrusive-related skarn and limestone that can be mapped at surface. That is important because such contacts often help geologists trace mineralised zones along strike and at depth.

Key Terminology Explained

WO₃ stands for tungsten trioxide and is the standard way tungsten grades are reported in mining. Scheelite is the principal tungsten ore mineral in many skarn deposits. Brownfields means the project has had past mining or exploration activity, unlike a greenfields project where little prior work exists.

From an investor perspective, tungsten skarns are a well-known deposit style. Historical production at approximately 1.1% WO₃, as cited by the company, suggests the mine previously operated on grades that were meaningful in a historical context. The next question is whether modern compilation and validation work can define remaining or additional mineralised zones in a way that meets current reporting standards.

Why the Historical Dataset Could Matter

One of the more important aspects of the ASX update is not only what was seen at surface, but what sits behind the project in historical records. Perpetual stated that the project includes more than 400 historical diamond drill holes, preserved drill core and historical reports.

That combination can be valuable if the data quality is sufficient. In addition, a modern explorer reviewing a brownfields asset with this level of historical work may be able to:

• Rebuild the geological model faster than at an early greenfields project
• Cross-check historical hole collars, assays and surveys
• Re-log preserved core using current geological methods
• Select priority areas for confirmatory drilling rather than starting without a target base

Of course, historical information still needs verification. The company has made that clear by including validation, reconciliation and 3D modelling in its next steps rather than implying that the historical work can be relied upon immediately for current reporting purposes.

What Comes Next in the Technical Programme?

According to the update, Perpetual's immediate programme is structured around six technical steps.

Near-term news flow is likely to centre on the pending rock chip assays. After that, the historical data compilation could become the more important value driver. A modern 3D model built from underground development orientation, surface mapping and hundreds of historical drill holes may clarify where follow-up drilling should be directed.

Why Nevada Scheelite Is Now a Project to Watch

The maiden site visit does not provide assay results or a resource estimate. It does, however, provide a practical technical starting point for a project with historical production, standing infrastructure and a substantial dataset.

For investors following ASX tungsten stocks, several points stand out:

• Surface geology appears consistent with the historical model, according to the company
• Historical infrastructure remains accessible for ongoing assessment
• Assays are pending from samples collected across the most prospective contact zone
• A large historical drill database is available for modern compilation
• Preserved core may support lower-cost technical review before fresh drilling

Perpetual also noted that the Nevada Scheelite Tungsten Project sits within its broader critical minerals portfolio spanning the United States, Brazil and Western Australia. In that portfolio context, the project appears to be moving into a lead technical role based on current field activity.

The next phase will matter more than the initial field confirmation alone. If assays support the mapped geology, and if the company can successfully reconcile the historical drilling into a credible modern model, Nevada Scheelite may progress from a historical mine with legacy records to a current exploration project with defined drill targets. For now, the July 2026 site visit has provided the first on-ground evidence that the geological foundations for that process are firmly in place.

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