Original News Release
Nobel Resources identifies copper system at Cuprita
Mr. Vernon Arseneau reports
NOBEL IDENTIFIES NEW MINERALIZED PORPHYRY COPPER SYSTEM, CUPRITA PROJECT, CHILE
Nobel Resources Corp. has identified a new mineralized, copper porphyry system at its Cuprita project in northern Chile. Nobel is conducting the first ever diamond drill program on this highly prospective project. Exploration surveys over the past year by Nobel's Chilean technical team identified key geological and geophysical characteristics, typically associated with mineralized porphyry copper systems in this region, and commenced a diamond drill campaign in January (see the company's news release dated Jan. 16, 2026, for further details).
The fourth drill hole in the company's drill program (CUP004) has intersected more than 100 metres of copper-bearing, mineralized porphyry. Assays are pending for all of the drilling to date and will be disclosed by the company when received. It is not expected that the entire interval will be of commercially exploitable grade, however, porphyry systems are large targets, and the technical results this early in the program are highly encouraging. Drill hole CUP 003 was the first hole that appeared to clip the edge of the system and intercepted weakly mineralized porphyry but provided important vectors based on the alteration observed in the hole.
From a 218-metre depth in drill hole CUP004, there is a marked increase in tourmaline veins and the rock transitions into an intrusive breccia with porphyry clasts. Copper values measured by XRF (X-ray fluorescence) (Olympus Innov-X Delta Premium XRF analyzer) increase locally, copper values up to 1,700 parts per million were measured using a portable XRF within the breccia. The XRF analyzer is calibrated once for the altitude at which it will be operated, which is valid until it moves to a different project. A second calibration is completed each time the machine is activated by taking a reading of the authentic Olympus Delta 316 standardization coin check sample (supplied with the equipment). This calibration takes 60 seconds. Portable XRF measurements are not as accurate as assays. They are point-source measurements on a portion of whole drill core. The values are accurate for the point measured but do not represent an average grade. It is an important field tool for estimating grade to assist with drill hole planning but should not be considered representative of the overall intercept.
From 285.5 m to 382 m, there is a sulphide-rich interval, characterized by an increasing density of quartz-sulphide veins, with disseminated pyrite plus or minus chalcopyrite and locally bornite. Alteration in this zone is primarily sericite-chlorite, with moderate to strong intensity. Copper values measured using portable XRF reached up to 2.9 per cent copper in chrysocolla-bearing veinlets and 2.6 per cent Cu in pyrite-chalcopyrite veinlets. The decrease in generalized oxidation and the appearance of primary sulphides suggest a transition from lithocap conditions to a mineralized domain. From 382 to 408.8 metres, there is a postmineralization dike which is barren of sulphide minerals. Below the dike, weakly mineralized porphyry was intercepted, and the hole stopped at a 460.6-metre depth.
Please note information regarding adjacent properties is provided for context only and is not necessarily indicative of the mineralization, grade, continuity or potential of the project. Readers are cautioned not to place undue reliance on statements about adjacent properties.
The company's drill program is targeting an area centred around an extensive lithocap that was identified by Nobel geologists by surface mapping on the property during 2025. The lithocap is interpreted to have developed above a porphyry-related hydrothermal system. The presence of a lithocap is a key signature of mineralized porphyries in this region. At Cuprita, it is characterized by strongly silicified rock forming a resistant silica-rich matrix with abundant cavities due to leaching of minerals and pyrite boxwork textures. The lithocap is oriented along a well-defined structural corridor, and has been mapped over an area of at least 1,000 metres in length and 300 metres in width defining a prominent alteration zone interpreted to overlie a large porphyry system. Access road construction for the drill program has created new outcrop exposures of the lithocap beyond these dimensions so the actual extent is not known but possibly extends over two kilometres by one kilometre under overburden cover. The lithocap is located within a broader soil anomaly zone defined by Cu values above 200 ppm reaching a maximum of 9,000 ppm Cu in soils.
Key geological and geophysical assumptions guiding the drill targeting at Cuprita include:
Located within the Paleocene porphyry copper belt;
Widespread copper mineralization in outcrops (including small-scale mines) and extensive copper geochemistry anomaly;
Presence of an extensive leach cap such as commonly associated with porphyry copper deposits in this region;
Extensive development of tourmaline breccia zones, a common pathfinder for porphyry copper projects in the region;
Induced polarization anomaly and magnetic low associated with the target area similar to low-pyrite porphyry copper deposits in the region;
Structural setting similar to major deposits, including El Salvador, Cerro Colorado, Spence, Sierra Gorda and Fortuna -- northeast structural corridor crosscut by northwest secondary faults;
Drill holes CUP-003 and CUP-004 confirm a clear vertical alteration zoning beneath the lithocap, transitioning from argillic to phyllic and propylitic alteration, a characteristic feature of large porphyry copper hydrothermal systems.
Vernon Arseneau, chief operating officer of Nobel, stated: "Based on my over 35 years of exploring in the Chile for these types of deposits, it is very rare to find such an extensive new lithocap with associated mineralization and geophysical anomalies that has never been drilled. This is an exciting start to the program."
Quality assurance and quality control
Sampling is conducted in a manner designed to allow appropriate averaging and statistical analysis of the data for exploration evaluation and potential future resource estimation. Industry standard QA/QC procedures are implemented throughout the sampling and analytical process, including the systematic insertion of certified reference materials, blanks and duplicate samples to monitor laboratory performance and analytical accuracy. Drill core samples are typically collected over intervals ranging from one to two metres, depending on geological boundaries. Shorter sample intervals are avoided whenever possible to maintain consistency and representativity of the sampled material. Prior to sampling, the drill core is geologically logged and photographed to create a high-resolution photographic record. Core samples are then split along the core axis using an electric rock saw by trained company technicians. One-half of the core is sent for analysis while the remaining half is retained on site for reference and verification.
As part of the QA/QC program, one certified reference standard is inserted every 20 core samples. Additionally, one coarse blank, one fine blank and one internal duplicate sample are inserted approximately every 50 core samples to monitor contamination, analytical precision and laboratory performance.
To ensure sample security and compliance with National Instrument 43-101 chain-of-custody standards, samples are placed in sealed rice bags with numbered security tags at the project site. Samples are then transported by company personnel by truck to the analytical laboratory. Custody and transfer of the samples always remain under the responsibility of company personnel. Sample preparation and analytical work are carried out by Andes Analytical Assays, an independent certified laboratory.
Qualified person
The scientific and technical information in this news release has been reviewed and approved by David Gower, PGeo, as defined by National Instrument 43-101 of the Canadian Securities Administrators. Mr. Gower is a consultant of Nobel and is not considered independent of the company.
About Nobel Resources Corp.
Nobel Resources is a Canadian resource company focused on identifying and developing prospective mineral projects. The company has a team with a strong background of exploration success.
We seek Safe Harbor.
View at source ↗