Questcorp and Riverside Resources Commence Phase 2B Program at La Union Project, Sonora, Mexico
The next drilling stage will test two targets, including a Luis Hill anomaly that a Phase 2A hole did not reach.
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Rhea-AI Summary
Questcorp Mining (OTCQB: QQCMF) and operator Riverside Resources have commenced Phase 2B exploration at the La Union Project in Sonora, Mexico. Road work and drill-pad construction are underway following the rainy season, and Riverside has secured a reverse circulation rig, which collects rock cuttings rather than core.
The program initially targets Luis Hill and Union Mine. Luis Hill drilling will test an electrical chargeability anomaly extending over 1 km, coinciding with a previous intercept of 0.3 g/t gold over 42 metres. A near-vertical, 350 m deep hole is planned after a Phase 2A hole failed to reach target depth. At Union Mine, drilling will test an 80 m step-out along a structure where continuous chip-channel sampling returned 20.2 g/t gold, 226 g/t silver and 2.7% zinc over 30 metres. Riverside expects the drilling method to advance more efficiently through faulted ground; lower costs depend on its performance.
Positive
- Minor pointPhase 2B commenced at La Union, with road work and drill-pad construction underway.
- Minor point. Forward-looking: it has not happened yet and may not happen.Reverse circulation rig secured; Riverside expects more efficient drilling through faulted ground.
- Minor point. Forward-looking: it has not happened yet and may not happen.Luis Hill drilling planned with a near-vertical, 350 m deep hole testing the chargeability anomaly.
- Minor pointLuis Hill anomaly extends over 1 km along strike and remains open along strike and at depth.
- Minor pointPrior Luis Hill intercept: 0.3 g/t gold over 42 metres in Phase 1 drilling.
4 minor points
- Minor point. Forward-looking: it has not happened yet and may not happen.Union Mine drilling planned at an 80 m step-out along strike, supported by ground magnetic surveying.
- Minor pointUnion Mine chip-channel sampling: 20.2 g/t gold, 226 g/t silver and 2.7% zinc over 30 metres.
- Minor pointPhase 2A hole UND26-013 intersected continuity of the historic Sproul manto mine near past underground workings.
- Minor pointQuestcorp places La Union’s replacement-deposit zones and targets at 150–250 metres, versus 300 to over 1,000 metres elsewhere.
Negative
- Minor pointPhase 2A hole UND26-018 was drilled above the Luis Hill anomaly but did not reach target depth.
- Minor point. Forward-looking: it has not happened yet and may not happen.More cost-effective drilling remains conditional on reverse circulation performing as Riverside plans.
AI-generated analysis. How Rhea-AI works. Not financial advice.
Vancouver, British Columbia--(Newsfile Corp. - November 6, 2026) - Questcorp Mining Inc. (CSE: QQQ) (OTCQB: QQCMF) (FSE: D910) (the "Company" or "Questcorp") along with Joint Venture partner and operator Riverside Resources Inc. ("Riverside") are pleased to announce commencement of Phase 2B at the La Union Project, Sonora, Mexico. With the conclusion of the rainy season, Riverside has commenced road work and drill pad construction in advance of the next stage of drilling.
Riverside has secured a reverse circulation ("RC") drilling rig in an effort to increase drill efficiency, penetration rates and hole depths. The absence of water in the core holes completed to date suggests drill cutting recovery should not be an issue to depths planned in this phase of the program.
Phase 2B will initially target Luis Hill and the Union Mine (see Figure 1):
- Drilling at Luis Hill will target an Induced Polarization ("IP") chargeability anomaly extending over 1 km along strike, which coincides with the sediment-hosted gold mineralization discovery hole of 0.3 g/t gold over 42 metres (January 12, 2026 news release) identified in Phase 1. The zone remains open along strike and at depth.
Drilling at Union Mine will follow up on the projected extension of the structure where chip-channel sampling yielded 20.2 g/t Au and 226 g/t Ag with
Questcorp President & CEO, Saf Dhillon stated, "We are very excited to commence the second part of our Phase 2 exploration program. The switchover from diamond drilling to reverse circulation should significantly increase penetration rates as we continue to build our geological model at La Union. During the rainy season, we reviewed several carbonate replacement deposits ("CRD") throughout the western Cordillera, incorporating aspects of their exploration programs and strategy into the upcoming program. One aspect that stood out above all others is the near proximity to surface of La Union's CRD zones and targets (150 to 250 metres), compared to depths of 300 to in excess of 1000 metres at other CRD projects being drilled elsewhere in the western Cordillera."
"Phase 2A exploration program outlined a large IP target at Luis Hill and continuity of mineralization at Union. Phase 2B plans to test both of these targets with RC drilling. We expect RC drilling to advance more efficiently through the faulted ground encountered during core drilling. If the RC drilling performs as planned, it will give us a more cost-effective way to drill at Union and provide the option to run larger programs in the future," said John-Mark Staude, President and CEO of Riverside Resources.
Figure 1: Map of the La Union Project showing the planned Phase 2B drill holes at Luis Hill (Upper Right) and Union Mine (Lower Right) targets, with 2025 and 2026 drill collars.
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10197/322780_questcorp1.jpg
Luis Hill Target
Luis Hill hosts sediment-hosted gold mineralization identified in the upper part of the Clemente Formation during Phase 1 drilling (see news release, January 12, 2026). Operator Riverside's geology team has mapped the stratigraphy and structure northward for over 2 km and identified cross-cutting feeder structures as targets. The IP survey completed in Phase 2A 2026 delineated a chargeability anomaly at Luis Hill extending over 1 km along strike that coincides with the sediment-hosted gold mineralization from Phase 1 and remains open along strike and at depth. Phase 2A hole UND26-018 was drilled above the anomaly but did not reach target depth. The Phase 2B drilling is planned to test a geophysical anomaly with a near-vertical, 350 m deep drill hole.
Union Mine Target
Phase 2A hole UND26-013 at the Union Mine intersected the continuity of the historic Sproul manto mine near the past underground mining, with anomalous Pb and Zn values indicating proximity to the replacement body. Similarly, rock chip-channel sampling returned 30 m grading 20.2 g/t Au and 226 g/t Ag along the access wall to the upper part of the Union Mine. The structure is hosted in the Clemente Formation, a major CRD host unit, with potential for sediment-hosted gold in the reactive shales above and below the host carbonate. The Phase 2B drilling in the Union Mine Target is planned to test the continuity of the structure at an 80 m step-out along strike, supported by the ground magnetic geophysics of the project.
Interested investors are invited to review the La Union Project Technical Report, which can be found under Questcorp's profile on SEDAR+.
Qualified Person & QA/QC
The technical content of this news release has been reviewed and approved by R. Tim Henneberry, P. Geo (BC), a Director of the Company and a Qualified Person under National Instrument 43-101 - Standards of Disclosure for Mineral Projects.
About Questcorp Mining Inc.
Questcorp is engaged in the business of the acquisition and exploration of mineral properties in North America, with the objective of locating and developing economic precious and base metal properties of merit. The Company holds an undivided 100-per-cent interest in and to mineral claims totalling 1,168.09 hectares comprising the North Island Copper property, on Vancouver Island, B.C., subject to a royalty obligation. The Company also holds an option to acquire an undivided 100-per-cent interest in and to mineral claims totalling 2,520.2 hectares comprising the La Union Project located in Sonora, Mexico, subject to a royalty obligation.
ON BEHALF OF THE BOARD OF DIRECTORS,
Saf Dhillon
President & CEO
Questcorp Mining Inc.
saf@questcorpmining.ca
Tel. (604-484-3031)
Suite 550, 800 West Pender Street
Vancouver, British Columbia
V6C 2V6
This news release includes certain "forward-looking statements" under applicable Canadian securities legislation. Forward-looking statements include, but are not limited to, statements with respect to the timing, scope and objectives of the Phase 2B drilling program; the expected performance and cost-effectiveness of RC drilling; and the potential for future exploration programs at the La Union Project. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties, and other factors which may cause the actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, the results of exploration and drilling activities, drilling and equipment performance, weather and site access conditions, general business, economic, competitive, political and social uncertainties, uncertain capital markets; and delay or failure to receive board or regulatory approvals. There can be no assurance that such forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.
Neither the Canadian Securities Exchange nor its Regulation Services Provider (as that term is defined in the policies of the Canadian Securities 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/322780
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What will Questcorp’s Phase 2B drilling test at La Union?
Phase 2B initially targets Luis Hill and Union Mine. A near-vertical, 350 m deep hole is planned at Luis Hill to test an electrical chargeability anomaly. Union Mine drilling will test continuity of the structure at an 80 m step-out along strike.
Why is Questcorp switching to reverse circulation drilling at La Union?
Riverside expects reverse circulation drilling to advance more efficiently through the faulted ground encountered during core drilling. If it performs as planned, Riverside expects a more cost-effective way to drill at Union and the option to run larger programs in the future.