Riverside Resources Announces Completion of Phase One Drilling at Union Project and Now Awaits Drill Assay Results
Riverside Resources (OTCQB: RVSDF) completed Phase 1 drilling at the Union Project, Sonora with 12 diamond core holes totaling >1,600 metres across six priority targets (Union Mine, Union Norte, Cobre, Luis, Famosa, Famosa Mag).
>700 half-core samples have been shipped to Bureau Veritas and ACT Labs for gold fire assay and multi-element ICP-MS; assays are pending. Drilling targeted shallow CRD-style manto and feeder horizons generally <150 m depth. Work was funded by partner Questcorp under an option agreement with Riverside as operator.
Company plans to integrate assays, geophysics and mapping to refine the model and scope a Phase 2 drill campaign, potentially in H1 2026.
Riverside Resources (OTCQB: RVSDF) ha completato la perforazione della Fase 1 presso il Union Project, Sonora con 12 pozzi di core diamantato per un totale di oltre 1.600 metri distribuiti su sei bersagli prioritari (Union Mine, Union Norte, Cobre, Luis, Famosa, Famosa Mag).
>700 campioni half-core sono stati spediti a Bureau Veritas e ACT Labs per analisi al fuoco sull’oro e ICP-MS multi-elementi; le analisi sono pendenti. La perforazione ha mirato mantelli CRD poco profondi e orizzonti di alimentazione, generalmente a profondità <150 m. Il lavoro è stato finanziato dal partner Questcorp nell’ambito di un accordo di opzione con Riverside come operatore.
La società intende integrare analisi, geofisica e mappatura per affinare il modello e definire l’ambito di una campagna di trivellazione della Fase 2, potenzialmente nel primo semestre del 2026.
Riverside Resources (OTCQB: RVSDF) completó la perforación de la Fase 1 en el Union Project, Sonora con 12 agujeros de núcleo de diamante que suman más de 1.600 metros distribuidos en seis objetivos prioritarios (Union Mine, Union Norte, Cobre, Luis, Famosa, Famosa Mag).
>700 muestras de medio núcleo han sido enviadas a Bureau Veritas y ACT Labs para ensayo de oro por fusión y ICP-MS multielementos; los ensayos están pendientes. La perforación se orientó a mantos CRD de estilo superficial y horizontes de alimentación, generalmente a profundidades <150 m. El trabajo fue financiado por el socio Questcorp bajo un acuerdo de opción con Riverside como operador.
La empresa planea integrar ensayos, geofísica y cartografía para refinar el modelo y definir el alcance de una campaña de perforación de la Fase 2, potencialmente en la primera mitad de 2026.
Riverside Resources (OTCQB: RVSDF)는 Union Project, Sonora에서 1단계 드릴링을 완료했으며 6개 우선 표적에 걸쳐 총 1,600m를 초과하는 다이아몬드 코어 12개 구멍을 실행했습니다.
>700개의 하프-코어 샘플이 Bureau Veritas 및 ACT Labs로 보내져 골드 플래임 분석 및 다중 원소 ICP-MS를 위한 분석이 진행 중이며 결과는 대기 중입니다. 시추는 얕은 CRD 스타일 맨토 및 공급대 horizon을 목표로 하였으며 일반적으로 깊이 150m 미만이었습니다. 이 작업은 Riverside가 운영자로서 파트너 Questcorp의 옵션 계약 하에 자금을 지원받았습니다.
회사는 분석, 지구물리학 및 매핑을 통합해 모델을 다듬고 Phase 2 드릴 캠페인의 범위를 정의할 계획이며 2026년 상반기에 가능성이 있습니다.
Riverside Resources (OTCQB: RVSDF) a terminé le forage de la Phase 1 sur le Union Project, Sonora avec 12 forages de carottes diamantées totalisant plus de 1 600 mètres répartis sur six cibles prioritaires (Union Mine, Union Norte, Cobre, Luis, Famosa, Famosa Mag).
Plus de 700 échantillons half-core ont été expédiés à Bureau Veritas et ACT Labs pour des analyses au feu sur l’or et un ICP-MS multi-éléments; les analyses sont en attente. Le forage visait des mantos CRD peu profonds et des horizons d’alimentation, généralement à des profondeurs inférieures à 150 m. Le travail a été financé par le partenaire Questcorp dans le cadre d’un accord d’option avec Riverside en tant qu’opérateur.
La société prévoit d’intégrer analyses, géophysique et cartographie pour affiner le modèle et définir l’étendue d’une campagne de forage de la Phase 2, potentiellement au premier semestre 2026.
Riverside Resources (OTCQB: RVSDF) hat die Bohrungen der Phase 1 am Union Project, Sonora abgeschlossen und 12 Diamantkernbohrungen mit insgesamt über 1.600 Metern in sechs priorisierten Zielen (Union Mine, Union Norte, Cobre, Luis, Famosa, Famosa Mag) durchgeführt.
Mehr als 700 Halbkerne-Proben wurden an Bureau Veritas und ACT Labs gesendet, um Goldfeueranalyse und Multi-Element ICP-MS durchzuführen; die Analysen stehen noch aus. Das Bohrprogramm zielte auf flache CRD-ähnliche Mantel- und Zufuhr-Horizonte ab, typischerweise in Tiefen unter 150 m. Die Arbeiten wurden von Partner Questcorp im Rahmen einer Optionsvereinbarung mit Riverside als Betreiber finanziert.
Das Unternehmen plant, Analysen, Geophysik und Kartierung zu integrieren, um das Modell zu verfeinern und den Umfang einer Phase-2-Bohrkampagne festzulegen, möglicherweise in der ersten Hälfte des Jahres 2026.
Riverside Resources (OTCQB: RVSDF) أكملت الحفر للمرحلة 1 في مشروع Union، سونورا مع 12 بئر قلب ماسي لجمركي يساوي أكثر من 1,600 متر موزعة على ستة أهداف ذات أولوية (Union Mine, Union Norte, Cobre, Luis, Famosa, Famosa Mag).
>700 عينة نصف مئوية أُرسلت إلى Bureau Veritas و ACT Labs من أجل اختبارات النار على الذهب وتحليل ICP-MS متعدد العناصر؛ الاختبارات قيد الانتظار. استهدفت الحفريات مصاطب CRD سطحية وآفاق تغذية عادةً بعمق أقل من 150 م. تم تمويل العمل من قبل الشريك Questcorp بموجب اتفاق خيار مع Riverside كالمشغل.
تخطط الشركة لدمج التحاليل والجغوفزياء والتخطيط لتحديد نموذج وتحديد نطاق حملة حفر للمرحلة 2، المحتمل أن تكون في النصف الأول من عام 2026.
- 12 holes completed across six targets
- >1,600 m total diamond core drilled
- >700 samples shipped to accredited labs
- Exploration funded by Questcorp under option agreement
- Phase 2 drilling planned for H1 2026 pending results
- Assay results are pending, creating near-term uncertainty
- No geochronology completed for intercepted intrusions
- Phase 1 reconnaissance only; material impact depends on future assays
~Over 1600 metres drilled to date and 700+ samples shipped to laboratory~
Vancouver, British Columbia--(Newsfile Corp. - November 12, 2025) - Riverside Resources Inc. (TSXV: RRI) (OTCQB: RVSDF) (FSE: 5YY0) ("Riverside" or the "Company"), is pleased to announce the completion of the first phase of drilling at the Union Project in Sonora, Mexico. 12 diamond core holes were completed for a total of just over 1,600 metres across six priority targets. The work is being advanced with funding through partner Questcorp Mining Inc. ("Questcorp") under the option agreement announced earlier in 2025 with Riverside as Operator and managing the exploration program.
Program Highlights
- 12 core holes completed totaling >1,600 m.
- Six targets drilled: Union Mine, Union Norte, Cobre, Luis, Famosa, and Famosa Mag.
- Three past-producing mine areas tested adjacent to historic workings to evaluate continuity.
- >700 half-core samples shipped; assays pending.
- Holes oriented as angle and near-vertical to cut stratigraphy and structures typical of Carbonate Replacement Deposit-type ("CRD") systems, with focus beneath oxidized horizons generally <150 m depth.
"This first exploration phase accomplished initial drill holes into 6 target areas. We tested multiple shallow gold and base metals targets, confirmed the key carbonate host units recognized by historic mining at Union and Famosa, and gathered the structural and alteration data to further progress efficient mineral exploration," said Dr. John-Mark Staude, President and CEO of Riverside Resources. "This historically mined CRD district, validated by new drilling and improved datasets, advances our geologic model and supports the potential for a large-scale discovery. With six targets advanced and more than 700 samples at the lab, once results are received, we will scope the next exploration program and focus on the most prospective trends indicated by assay results, stratigraphy, structure, and geophysics."
Drilling Update by Area
Union Mine: Three holes at the Union Mine targeted manto horizons and chimney/feeder structures adjacent to historic underground workings. This reconnaissance drilling was designed to evaluate stratigraphy, alteration, and mineralization continuity typical of CRD systems.
Famosa Mine Area: Four core holes tested a west-dipping dolomite manto target and adjacent structures. Logging noted intrusive dikes and breccias; no geochronology has been completed. Historical small-scale mining left surface dumps reported with gold grades of >0.5 oz/t Au (>15 g/t) in an independent NI 43-101 report filed on SEDAR+, May 7, 2025, by Questcorp. An inclined shaft dipping ~70° to the west parallels the favorable horizon. Holes were drilled at angles toward the east to intersect the target as close to perpendicular as practical and to evaluate continuity of alteration and mineralization.
Union Norte: Two initial holes tested the manto horizon within dolomitic carbonate strata to evaluate continuity and geometry along favorable trends mapped near historic workings. This phase targeted the westward extension. Follow-up work, including possible step-outs to the east, will be considered after assays and geological interpretation.
Cobre and Luis: Each target was tested to assess style, structure, and controls on mineralization. Results to date show sulfides, mineralization types, and intrusions aligned with a carbonate-hosted metals system.
Figure 1: Map of drill targets and core drill hole locations for the 12 holes of Phase 1 program.
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/6101/274043_4f76f41f0415684e_002full.jpg
Sampling and Assays
Core was logged, saw-cut, and half-core samples were shipped for analysis. Samples from the first eight holes were delivered to Bureau Veritas (Hermosillo, Sonora) for gold fire assay, with pulps forwarded to Vancouver, Canada for Inductively Coupled Plasma-Mass Spectrometry ("ICP-MS") following four-acid digestion to determine silver, base metals, and pathfinders. Samples from the final four holes were shipped to ACT Labs Zacatecas, where preparation, gold assay, and multi-element ICP are completed in Mexico. Remaining half-cores are retained for reference. The final 4 holes of the program were shipped to ACT Labs where they were similarly assayed using the same processing methods but with their initial preparation and assaying completed in Zacatecas, Mexico using the same ICP and gold fire assay methods.
Next Steps
After assays are received, the Company plans to announce results and begin work to integrate the full exploration results including the assays, core logging, geophysics, advance detailed multi-element geochemistry, and updated structural mapping to refine the CRD model and scope for a Phase 2 exploration campaign. The Phase 2 campaign will likely include more extensive drilling and other exploration work as this Phase 1 was only an initial sampling into some of the targets at Union. This next expanded drill program could take place in H1, 2026 as all permits and access are in good standing and with the new data targets will be ready to explore.
Qualified Person & QA/QC:
The scientific and technical data contained in this news release pertaining to the Project was reviewed and approved by Freeman Smith, P.Geo, a non-independent qualified person to Riverside Resources Inc., who is responsible for ensuring that the information provided in this news release is accurate and who acts as a "qualified person" under National Instrument 43-101 Standards of Disclosure for Mineral Projects.
About Riverside Resources Inc.:
Riverside is a well-funded exploration company driven by value generation and discovery. The Company has a solid balance sheet with no debt and less than 75M shares outstanding with a strong portfolio of gold-silver and copper assets and royalties in North America. Riverside has extensive experience and knowledge operating in Mexico and Canada and leverages its large database to generate a portfolio of prospective mineral properties. Riverside has properties available for option, with information available on the Company's website at www.rivres.com.
ON BEHALF OF RIVERSIDE RESOURCES INC.
"John-Mark Staude"
Dr. John-Mark Staude, President & CEO
For additional information contact:
| John-Mark Staude President, CEO Riverside Resources Inc. info@rivres.com Phone: (778) 327-6671 Fax: (778) 327-6675 Web: www.rivres.com | Eric Negraeff Corporate Communications Riverside Resources Inc. Eric@rivres.com Phone: (778) 327-6671 TF: (877) RIV-RES1 Web: www.rivres.com |
Certain statements in this press release may be considered forward-looking information. These statements can be identified by the use of forward-looking terminology (e.g., "expect"," estimates", "intends", "anticipates", "believes", "plans"). Such information involves known and unknown risks -- including the risk that the Transaction will not be completed as contemplates, or at all, availability of funds, the results of financing and exploration activities, the interpretation of exploration results and other geological data, or unanticipated costs and expenses and other risks identified by Riverside in its public securities filings that may cause actual events to differ materially from current expectations. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release.
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
To view the source version of this press release, please visit https://www.newsfilecorp.com/release/274043
FAQ
What did Riverside (RVSDF) complete at the Union Project on November 12, 2025?
How many samples from Riverside RVSDF Phase 1 were sent for assay and to which labs?
When could Riverside (RVSDF) start Phase 2 drilling at Union Project?
Which targets were drilled in Riverside's RVSDF Phase 1 program at Union Project?
Who is funding Riverside's (RVSDF) Union Project drilling program?
