Potential Large scale Porphyry - High Sulphidation System at Jiguata Project -- Tribeca Resources Technical Update
(TheNewswire)
25FEBRUARY, 2026 | VANCOUVER, BC – TheNewswire - Tribeca Resources Corporation (TSXV: TRBC) (OTCQB: TRRCF) (“Tribeca Resources”,the “Company”) is pleased to report technical updates from ongoingfield programs and integrated analysis of mapping, soil sampling,hyperspectral and geophysical datasets at its Jiguata porphyry copperexploration project in Northern Chile.
Highlights:
Structural analysis indicates the Jiguata project issituated adjacent to the crustal scale north-south oriented Loa faultand at the intersection of significant NW and NE structures, which arecritical components in the formation of major porphyry Cu-Au-Mo andhigh sulphidation epithermal Au-Ag-Cu deposits within the ChileanAndes.
Four substantial alteration centres have beendelineated along a 7 km by 4 km northwest-oriented trend, suggesting asizeable multiphase porphyry-epithermal district
The alteration mineralogy and its distribution pointtoward the development of potential porphyry-related advancedargillic, steam-heated zones, which may conceal underlyingmineralization
Geological mapping has revealed large-scale,high-energy alunite-jarosite-bearing phreatic and hydrothermalbreccias, as well as relatively unaltered dacitic porphyritic domes. Thesefeatures are interpreted to represent multiphase porphyry intrusivecentres at depth within a telescoped system
Coincident IP chargeability and low resistivityanomalies match the scale and intensity observed in other recent deepporphyry discoveries beneath “barren” porphyry-related advancedargillic caps
Multiple resistivity signatures within intenselyaltered zones are interpreted as indicators of high sulphidationepithermal vuggy silica targets and “silica shoulders” associatedwith deeper porphyry systems
Tribeca Resources CEO, Dr. Paul Gowcommented:
“We are very pleased with what weare uncovering at the Jiguata Project. With four large zones ofalteration developed over a 7km length, in the right structuralsetting, we can see a district coming together. While we are nowawaiting detailed geochemical results and ground spectral informationthat will add to this picture, we believe the signs are there for thedevelopment of mineralization at depth. This systematic approach,although requiring significant pre-drilling field activity, shouldyield high quality drill targets that we can test with confidence.Field work is ongoing, but we are confident that drill holes can betargeted in a way that fully encapsulates all the data gathered duringthis systematic phase, after which we will look to mobilise drill rigsto priority targets.”
Jiguata Porphyry Copper-MolybdenumProject
The Jiguata Project is a 10,000 hectare propertylocated in the Tarapacá region in northern Chile. It is situated inthe northern extension of the prolific Palaeocene and Eocene-Oligoceneporphyry copper belts where it is overprinted by the younger MioceneBelt of magmatism that hosts recent large scale high sulphidationepithermal gold and porphyry copper-gold discoveries further to thesouth, including Vendaval Cu-Au Porphyry (First Quantum) (“Vendaval)and Salares Norte Au-Ag High Sulphidation Epithermal (Goldfields)(“Salares Norte”) (Figure 1). References tonearby or regional deposits are provided for geological context only.The presence, size or grade of mineralization on other properties inthe belt, including Vendaval and Salares Norte, is not necessarilyindicative of mineralization on the Jiguata Project.
Figure 1. Location of the Jiguata Project within theMiocene Belt of northern Chile. Deposits sizes and structuralinterpretation from *Farrar, D. G., Tosdal, R. M., and Dilles, J. H.,2023, Lithospheric architecture of the Central Andes: EconomicGeology, v. 118, no. 6, p. 1253–1280.
Structural setting and prospectivityof the Jiguata Project
Structural interpretation has been completed across theJiguata Project, incorporating newly acquired geophysical surveys andevolving field geological mapping. This interpretation indicates theproject is situated along the Domeyko Structural Corridor, acontinental-scale, structural feature that is defined by a 40–60 kmwide zone that stretches for more than 1,000 km in northern Chile. TheLoa Fault system, part of the Domeyko system, has been interpreted topass through the Jiguata Project. The Domeyko Structural Corridorhosts significant giant porphyry systems in northern Chile, includingEscondida, Chuquicamata, Nueva Union, Collahuasi, Quebrada Blanca andCerro Colorado, which are referenced solely toillustrate the regional geological setting.Such deposits are not necessarily indicative ofmineralization on the Jiguata Project.
Structural analysis has also interpreted coalescingoblique structural controls, oriented northwest and northeast withinthe Domeyko Structural Corridor. The northeast trending Quebrada Parca- Quebrada Minacucho fault system, which is aproven deep seated, fault zone that hosts porphyry stylemineralization at the Cerro Colorado deposit and Queen Elizabethprospect to the west of Jiguata, has been interpreted as transectingthe Jiguata Project.
Four Alteration Centres HighlightMultiple Priority Targets at Jiguata
Alteration mapping from multispectral satelliteimagery, supported by ongoing field mapping, has identified foursignificant alteration centres within a ~7 km x 4 km corridor atJiguata (Figure 2). The alteration centres, referred to as LaSoberana, Escudo Real, El Trono and Cetro Dorado, present as broadalteration zones in favourable structural settings, coincident withmapped breccias, and at La Soberana dacitic domes, along withprospective geophysical responses.
The alteration centre represents a historical focus forexploration activities at Jiguata and is defined by an approximate 2.5km x 1.5 km multispectral alteration and mapped alteration zoneproximal to mapped hydrothermal breccias and dacitic porphyriticdomes.
The alteration centre is situated at the intersectionof a prominent northwest trending structural zone and the interpretednorth-south trending Loa Fault zone. Preliminary soil pXRF resultsoutline coincident anomalism in As, Mo and Pb with historic rock chipsreturning up to 1,700 ppm Mo. The location features coincident high IPchargeability and low resistivity responses, along with an interpretedcomplex magnetic signature. Historic limited drill testing, comprisingtwo reverse circulation holes drilled to 250m-300m depth, identifiedbroad zones of anomalous copper hosted within a variably alteredandesite host, however the historic drilling is considered to havebeen too shallow, and too far south, to have intersected remodelledgeophysical responses at La Soberana.
The Cetro Dorado alteration centre is situatedapproximately 3.5km to the northeast of La Soberana (Figure 2) andrepresents the northeastern-most target, situated within theinterpreted Loa Fault zone proximal to the intersection of majornortheast and northwest faults. The alteration centre is defined by anapproximate 3.2 km x 2.0 km alteration footprint coincident with aninterpreted low magnetic zone. IP modelling defines a northeasttrending moderate chargeability response (+ 25 mV/V – Figure 3) withlocalised cores of coincident high chargeability and low resistivityalong with deeper resistive “root” features. Preliminary soil pXRFanalyses delineate a broad As anomaly coincident with the alterationand geophysical features within the area (Figure 4). Field mapping isunderway in this area.
Escudo Real is situated approximately 4km to thenorthwest of La Soberana proximal to a prominent northwest trendingstructural feature. The alteration centre is defined by a 2.5 km x 1.8km alteration footprint situated between El Trono to the northwest andLa Soberana to the southeast. Preliminary field mapping has identifiednorthwest trending hydrothermal breccias bearing alunite and jarositewithin the broad alteration zone. IP coverage outlines anorthwest-trending resistive feature with partially coincidentchargeability and offset low resistivity responses which remain opentowards the northeast. Soil geochemistry has not yet been completed atthis target location.
El Trono is situated approximately 5.5km to thenorthwest of La Soberana. The location is considered a high prioritytarget defined by a locally prominent topographic high with alterationmodelled from satellite data extending over approximately 2.0 km x 2.0km, proximal to the interpreted northeast Minacucho fault system.Encouragingly, the modelled multispectral and preliminary mappedalteration indicates the presence of a substantial silica andpotentially sulphide-rich core with peripheral clay rich alterationhalos. Topographical access constraints have limited detailed mappingand have impeded the advancement of geochemical and geophysicalcoverage; however, historic rock chips have returned values of >200ppm Cu and up to 0.03 g/t Au proximal to mapped jarosite-bearingbreccias. El Trono is prioritized for completion of soil geochemicalsurveys and potential extension of geophysical surveys to advancepotential drill targets.
Figure 2. Location of alteration centres with anoverview of the Escudo Real and El Trono locations
Preliminary geophysical modelling andinterpretations
Results have been received from the recently completedground magnetic survey across the Jiguata Project area. Interpretationof preliminary total magnetic intensity (TMI) data (analytical signal)outlines a broad magnetic low that contains discrete magnetic highs.The magnetic low is spatially coincident with mapped and interpretedalteration, while the discrete magnetic highs are observed to beassociated with mapped dacitic porphyritic domes.
The Company interprets that the discrete magnetic highsmay represent potential intrusive centres and/or feeder zones, whereasthe broader magnetic low may reflect magnetite-destructive alteration.An objective of the current work is to combinethe interpretation of hyperspectral mineral composition patterns withdetailed modelling of the geophysical datasets to provide vectorstowards mineralized centres.
Interpretation and 3D remodelling of historic inducedpolarization (IP) data delineate two principal chargeability trends:one northeast-trending and one northwest-trending, with coincident lowresistivity cores centred on the identified alteration centres (Figure3).
The IP data also identified discrete extensiveresistive “root” features developed proximal to low resistivityand elevated chargeability responses.
At La Soberana and Cetro Dorado, discrete magnetichighs appear to occur adjacent to coincident low resistivity andchargeable responses, supporting these areas as priority targets forfollow-up work.
Figure 3. Summary maps of the geophysical signatures inrelation to the four alteration centres.
Initial pXRF soil geochemicalresults
Preliminary pXRF analysis of soil samples has beencompleted over the La Soberana and partially across the Cetro Doradozones (Figure 4). The samples have subsequently been submitted to thelaboratory for multielement geochemistry and hyperspectral analysis.At a high level, broad, coincident multi-element pXRF geochemicalanomalies have been delineated that are spatially associated withinterpreted alteration features and structural settings. See below forinformation related to analysis and QAQC procedures for the pXRF data,which are preliminary in nature; laboratory results are pending andwill be reported once received.
The multi-element pXRF anomalies define a northeasttrending pattern, extending up to approximately 2.5 km at La Soberanaand 1.9 km at Cetro Dorado. These anomalies correlate with IPchargeability and low resistivity responses.
Interpretation of the soil dataset will be refined whenfinal laboratory geochemical and spectral results are received.Unfortunately, current turnaround times at analytical laboratories inChile are increasing with the current high level of explorationactivity in the country, making the timing of receipt of theseanalyses uncertain.
Figure 4. Summary results of pXRF analyses collected todate from the soil samples in the northeastern oriented zone coveringthe La Soberana and Cetro Dorado targets.
Progressing geological mapping
Field geological mapping has been completed across theLa Soberana alteration centre and continues to unfold across theremaining alteration centres. At La Soberana, mapping has delineated anortheast trending hydrothermal breccia with quartz and alunite, andjarosite developed within a zone of advanced argillic alteration. Thisbreccia zone trends toward younger cover and has been tracedintermittently over an approximate 1.5 km strike length. Hydrothermalbreccias at La Soberana appear spatially associated with outcropping,altered hypabyssal dacitic porphyritic domes.
Reconnaissance mapping at the other alteration centreshas also identified hydrothermal breccia outcrops coincident withareas of argillic to advanced argillic alteration.
Mapped hypabyssal dacite domes show spatial agreementwith interpreted geophysical features, and prospective breccia zonesappear to partially coincide with IP chargeability and low resistivityresponses. Mapping is being expanded to cover the majority of theJiguata tenure, with priority placed on areas exhibiting coincidentalteration and geophysical anomalism.
Figure 5. Summary of the available data in the LaSoberana area.
Analysis and QAQC Procedures
The pXRF results presented here were collected fromplastic bags of sieved soil samples (-2mm) utilizing a HP InnovXSystemhand-held pXRF. The measurements were taken from the fine material atthe bottom of each bag. The machine was regularly calibrated using amanufacturer supplied standard. The plots shown in this releaserepresent the maximum value from each sample, with typically threereadings collected per sample.
Qualified Person
All scientific and technical information in this pressrelease has been prepared by, or approved by, Dr. Paul Gow, who is theCEO of Tribeca Resources. He is a Member of the Australian Instituteof Geoscientists (MAIG), a Member of the Australasian Institute ofMining and Metallurgy (MAusIMM) and a qualified person for thepurposes of National Instrument 43-101 – Standards of Disclosure forMineral Projects (“NI 43-101”). Dr. Gow has not verified any ofthe information regarding any of the properties or projects referredto herein other than the La Higuera IOCGProject, the Jiguata Project and the Chiricutoproperty. Mineralization on any other properties referred to herein isnot necessarily indicative of mineralization on the La Higuera IOCG Project, the JiguataProject and the Chiricuto property.
About Tribeca Resources
Tribeca Resources is aportfolio-driven copper explorer focused on northern Chile. Led by ateam with a track-record of discovery and significant equityownership, Tribeca Resources’ objective is to discover the mineralresources for the next generation of copper mines in Chile.
Tribeca Resources’ flagship La Higuera IOCG Projecthas seen approximately 10,000m of drilling with mineralization definedover a 1.4 kilometer strike length. Most of the La Higuera Project isheld as 100%-owned properties, but with the properties overlying theGaby target held under a purchase option agreement. The Chiricuto andJiguata projects are earlier stage porphyry copper-gold-molybdenumtargets, held under purchase option agreements.
On behalf of Tribeca ResourcesCorporation
Paul Gow | Thomas Schmidt | |
CEO and Director | President and Director | |
+1 604 685 9316 | +1 604 685 9316 |
Cautionary Note
Neither the TSX Venture Exchange Inc. nor itsRegulation Service Provider (as that term is defined in the policiesof the TSX Venture Exchange Inc.) accepts responsibility for theadequacy or accuracy of this press release.
This press release does not constitute or form a partof any offer or solicitation to purchase or subscribe for securitiesin the United States. The securities referred to herein have not beenand will not be registered under the Securities Act of 1933, asamended (the “Securities Act”), or with any securities regulatoryauthority of any state or other jurisdiction in the United States, andmay not be offered or sold, directly or indirectly, within the UnitedStates or to, or for the account or benefit of, U.S. persons, as suchterm is defined in Regulation S under the Securities Act(“Regulation S”), except pursuant to an exemption from or in atransaction not subject to the registration requirements of theSecurities Act.
Forward Looking Information
This press release contains forward-looking statementsand information that are based on the beliefs of management andreflect the Company's current expectations. When used in thispress release, the words "estimate", "project","belief", "anticipate", "intend","expect", "plan", "predict","may" or "should" and the negative of these wordsor such variations thereon or comparable terminology are intended toidentify forward-looking statements and information. Theforward-looking statements and information in this press releaseinclude statements regarding therelationship between alteration and rock characteristics identified ingeological mapping and potential mineralization, the identification, prioritization andanticipated quality of exploration targets, the interpreted scale,extent and geological significance of alteration systems, the relationship between geophysical andgeochemical survey results and potential mineralization, the size andtiming of the proposed 2026 drill programs, the anticipated effectiveness ofexploration methodologies, the integration ofnew and historic data to define drill targets, planned explorationactivities beyond drilling, the anticipated completion of fieldactivities and commencement of drilling (including the potential forweather-related delays), the ongoing engagement of GlobalOre and itsimpact on exploration outcomes, the use of proceeds from recentlycompleted financings, the ability to secure and maintain necessarypermits and approvals and the operations and future plans of theCompany, including potential additional drilling and propertyacquisitions.
Such statements and information reflect the currentview of the Company. By their nature, forward-looking statementsinvolve known and unknown risks, uncertainties and other factors,which may cause our actual results, performance or achievements, orother future events, to be materially different from any futureresults, performance or achievements expressed or implied by suchforward-looking statements. Such factors include, among others, theability of the Company to pay the purchase price and make any otherpayments required under the Jiguata Option Agreement, as well as tocomplete its option to acquire the Gaby target, risks associated withmineral exploration, including the risk that actual results ofexploration will be different from those expected by management andthat geological, geophysical and geochemical interpretations may notbe confirmed by drilling, risks of delays or interruptions toexploration activities due to weather, logistical or access issues,risks related to obtaining and maintaining necessary permits andapprovals, risks related to the availability and retention of keypersonnel, the ability to raise additional capital, fluctuations incommodity prices and market conditions, the reliability of historic orthird-party data, the risk that anymineralization identified may be limited in size, continuity oreconomic significance, unanticipated costs orenvironmental liabilities, the risk that new laws or regulations couldadversely affect the business and results of operations of the Companyand anticipated work on the Company’s projects and other risks inherent in early?stage mineral explorationprojects.
There are several important factors that could causethe Company’s actual results to differ materially from thoseindicated or implied by forward-looking statements and information.Such factors include, among others: reliance on key management;changes in the credit or security markets; therisk that exploration activities, including drilling, may not resultin the discovery of economically viable mineralization; the risk thatgeological, geophysical or geochemical interpretations may proveinaccurate or incomplete; risks inherent in early?stage mineralexploration projects for which no mineral resources have been defined;risks related to the Company’s ability to maintain its interest inexploration properties; results of operationactivities; unanticipated costs and expenses; fluctuations incommodity prices; the reliability and limitations of preliminary,historic or third?partyexploration data; and general market and industry conditions. TheCompany cautions that the foregoing list of material factors is notexhaustive. When relying on the Company's forward-lookingstatements and information to make decisions, investors and othersshould carefully consider the foregoing factors and otheruncertainties and potential events.
The Company has assumed that the material factorsreferred to in the previous paragraph will not cause suchforward-looking statements and information to differ materially fromactual results or events. The forward-looking information contained inthis press release represents the expectations of the Company as ofthe date of this press release and, accordingly, is subject to changeafter such date. Readers should not place undue importance on forwardlooking information and should not rely upon this information as ofany other date. While the Company may elect to, it does not undertaketo update this information at any particular time except as requiredin accordance with applicable laws.
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