Minaurum Drills More High-Grade Silver at Alamos Silver Project

Rhea-AI Summary

Minaurum (OTCQX: MMRGF) reported additional results from its 2025 resource-definition drilling at the Alamos silver project in Sonora, Mexico, completing 35 holes across the Promontorio, Travesia and Europa vein zones.

Key assay highlights include 4.80 m of 287 g/t AgEq (incl. 0.50 m of 1,029 g/t AgEq) in AL25-141; 1.10 m of 730 g/t AgEq and 4.53 m of 396 g/t AgEq (incl. 0.50 m of 1,271 g/t AgEq) in AL25-142; and 1.40 m of 410 g/t AgEq in AL25-148. Weighting used CIBC consensus long-term commodity prices (Oct 1, 2025).

Positive

• 35 drill holes completed across Promontorio, Travesia, Europa
• AL25-141: 4.80 m @ 287 g/t AgEq including 0.50 m @ 1,029 g/t AgEq
• AL25-142: 4.53 m @ 396 g/t AgEq including 0.50 m @ 1,271 g/t AgEq
• Multiple stacked high-grade intervals at Europa supporting resource targets

Negative

• Assays pending for holes beyond AL25-149, leaving incomplete dataset
• Assay results have not been verified by re-analysis (no re-assay performed)
• Most high-grade intercepts are narrow (many ≤1.5 m), limiting immediate bulk-mining inference

Vancouver, British Columbia--(Newsfile Corp. - October 29, 2025) - Minaurum Gold Inc. (TSXV: MGG) (OTCQX: MMRGF) ("Minaurum") is pleased to announce further results of its 2025 resource-definition drill program targeting the Promontorio, Travesia, and Europa vein zones at its Alamos Silver Project ("Alamos") in Sonora, Mexico. Drilling continued to return numerous high-grade intersections including: (Table 1; Figures 1-4).

• 4.80 m of 287 g/t silver equivalent ("AgEq") including 0.50 m of 1,029 g/t AgEq (Hole AL25-141)
• 1.10 m of 730 g/t AgEq (Hole AL25-142)
• 3.08 m of 523 g/t AgEq (Hole AL25-142)
• 1.40 m of 410 g/t AgEq (Hole AL25-148)

"Drilling continues to demonstrate the continuity of high-grade silver mineralization down dip and along strike," stated Darrell Rader, President and CEO of Minaurum Gold. "At the Europa stacked vein system, hole AL25-142 vein intersected three intervals of significant mineralization, yielding targets for further drilling and resource development."

2025 Resource-Definition Drilling
Minaurum has completed 35 holes on the Europa, Promontorio, and Travesia vein zones. Assays have been received for holes AL25-129 through AL25-149, with assays pending for the remainder (Figures 2 and 3).

Promontorio Vein Zone
Promontorio, along with the Europa vein zone, is one of the high-priority targets in which Minaurum will establish a maiden resource at Alamos. The 1 km-long Promontorio vein zone consists of multiple veins including the Veta Grande and Veta Las Guijas veins. Drilling to date at Promontorio and Promontorio Sur has intersected mineralization in epithermal vein-hosted cutting volcanic and intrusive rocks in addition to skarn/carbonate replacement (CRD) mineralization hosted by limestone in the footwall of the vein zones. Hole AL25-141 intersected 4.80 m of 287 g/t AgEq including 0.50 m of 1,029 g/t AgEq (771 g/t Ag, 0.49 g/t Au, 0.49% Cu, 2.09% Pb, and 4.29% Zn) and 0.55 m of 753 g/t AgEq (352 g/t Ag, 0.495 g/t Au, 0.79% Cu, 3.10% Pb, and 7.59% Zn). Hole AL25-147 drilled approximately 200 m to the southeast, intersected lead- and zinc-mineralized structures within the limestone in the down-dropped Promontorio Sur zone target, returning 0.55 m of 140 g/t AgEq and 0.25 m of 139 g/t AgEq, presenting CRD mineralization continuity with significant potential at depth (Table 1, Figure 2).

Figure 1. Plan view showing locations of Travesia, Promontorio, and Europa vein zones.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/3455/271943_4fde203544c78880_003full.jpg

Table 1. Assay highlights of holes AL25-141 - AL25-149. Hole locations are shown in Figure 1. Weight-averaged silver-equivalent grades are based on October 1, 2025 Long-term CIBC Global Mining Group Analyst Consensus Commodity Price Forecast: Ag $29.73/tr oz, Au $2,646/tr oz, Cu $4.34/lb, Pb $0.92/lb, Zn $1.21/lb.

Promontorio
Hole	From  (m)	To (m)	Interval (m)	Ag g/t	Au g/t	Cu %	Pb %	Zn %	AgEq g/t
AL25-141	254.75	255.45	0.70	176	0.003	0.611	0.312	0.266	251
	260.73	261.25	0.52	110	0.131	0.226	0.209	0.353	159
	267.50	268.00	0.50	107	0.028	0.248	0.273	0.432	152
	334.90	339.70	4.80	154	0.167	0.281	1.063	2.409	287
	including
	334.90	335.40	0.50	771	0.498	0.499	2.090	4.290	1,029
	and
	337.20	337.75	0.55	352	0.495	0.797	3.100	7.590	753
AL25-144	279.45	279.60	0.15	47	0.036	0.349	2.140	0.986	158
AL25-146	364.10	365.00	0.90	24.1	0.005	0.072	0.006	0.049	33
AL25-147	269.60	270.15	0.55	63.6	0.255	0.490	0.107	0.083	140
	285.00	285.45	0.45	3.5	0.027	0.005	1.160	2.690	106
	288.50	288.75	0.25	4.7	0.038	0.023	1.055	3.810	139

 

Europa
Hole	From  (m)	To (m)	Interval (m)	Ag g/t	Au g/t	Cu %	Pb %	Zn %	AgEq g/t
AL25-142	177.45	178.55	1.10	606	0.079	0.641	0.817	1.283	730
	including
	178.00	178.55	0.55	1,075	0.154	1.035	1.380	2.160	1,282
	349.55	350.10	0.55	146	0.016	0.226	2.530	5.070	365
	473.60	474.10	0.50	177	0.008	0.235	0.181	0.467	218
	493.00	497.53	4.53	275	0.081	0.341	0.906	2.145	396
	including
	494.45	497.53	3.08	369	0.104	0.433	1.231	2.705	523
	which includes
	495.80	496.30	0.50	983	0.153	0.853	1.985	5.280	1,271
AL25-143	247.85	248.35	0.50	91.8	0.001	0.452	0.069	1.285	174
	263.65	264.55	0.90	145	0.035	0.370	0.667	1.410	239
AL25-145	380.80	381.65	0.85	145	0.071	0.383	1.150	1.010	242
AL25-148	194.35	195.75	1.40	300	0.183	0.442	0.663	1.265	410
AL25-149	174.70	175.40	0.70	225	0.067	1.370	1.190	1.655	440

 

Travesia Vein Zone
The Travesia vein zone lies to the north of the Promontorio zone and in the same structural corridor (Figures 1 and 2). Further drilling is anticipated at Travesia to test potential for high-grade mineralization along strike and down dip.

Figure 2. Longitudinal section of Travesia-Promontorio vein zones, showing locations of highlighted mineralized intersections.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/3455/271943_4fde203544c78880_004full.jpg

Europa Vein Zone
Drilling has extended high-grade mineralization down-dip and along-strike (see Minaurum news release dated October 16, 2025). In the Nueva Europa vein zone, an interval of 1.10 m of 730 g/t AgEq with high grade silver of 606 g/t Ag including 0.55 m of 1,075 g/t Ag.

Hole AL25-142 returned 4.53 m of 396 g/t AgEq including 0.50 m of 1,271 g/t AgEq containing 983 g/t Ag (0.15 g/t Au, 0.85% Cu, 1.98% Pb, 5.28% Zn); and hole AL25-148 reported 1.40 m of 410 g/t AgEq. Along-strike and to the south, hole AL25-143 returned 0.90 m of 239 g/t AgEq and AL25-149 reported 0.70 m of 440 g/t AgEq also containing a high-grade interval of 300 g/t Ag. Drilling continues to step out along strike and down dip at Europa. (Table 1 and Figures 3 and 4).

Figure 3. Longitudinal section of Europa vein zone, showing locations of highlighted mineralized intersections.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/3455/271943_4fde203544c78880_005full.jpg

Figure 4. Cross section of Europa and Nueva Europa vein zones, showing holes AL25-142 and AL25-148.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/3455/271943_4fde203544c78880_006full.jpg

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Minaurum Gold Inc. (TSXV: MGG) (OTCQX: MMRGF) (FSE: 78M) is an Americas-focused explorer concentrating on the high-grade 100% owned, production-permitted Alamos silver project in southern Sonora, Mexico and the Lone Mountain CRD Project in Nevada, USA. Minaurum is managed by one of the strongest technical and finance teams and will continue its founders' legacy of creating shareholder value by acquiring and developing a pipeline of Tier-One precious-and base metal projects.

ON BEHALF OF THE BOARD

"Darrell A. Rader"

Darrell A. Rader
President and CEO

For more information, please contact:
Sunny Pannu - Investor Relations and Corporate Development Manager
(778) 330 0994 or via email at pannu@minaurum.com

The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this news release.

___________________________________________________________________________

1570- 200 Burrard Street Vancouver, BC V6C 3L6

Telephone: 1 778 330-0994 www.minaurum.com info@minaurum.com

 

Data review and verification: Stephen R. Maynard, Vice President of Exploration of Minaurum and a Qualified Person (QP) as defined by National Instrument 43-101, reviewed and verified the assay data, and has approved the disclosure in this News Release. Verification was done by visual inspection of core samples and comparison to assay results. Assay results have not been checked by re-analysis. No factors were identified that could materially affect the accuracy or reliability of the data presented in this news release.

Analytical Procedures and Quality Assurance/Quality Control: Preparation and assaying of drilling samples from Minaurum's Alamos project are done with strict adherence to a Quality Assurance/Quality Control (QA/QC) protocol. Core samples are sawed in half and then bagged in a secure facility near the site and then shipped either by a licensed courieror by Company personnel to ALS Minerals' preparation facility in Hermosillo, Sonora, Mexico. ALS prepares the samples, crushing them to 70% less than 2mm, splitting off 250g, and pulverizing the split to more than 85% passing 75 microns. The resulting sample pulps are prepared in Hermosillo, and then shipped to Vancouver for chemical analysis by ALS Minerals. In Vancouver, the pulps are analyzed for gold by fire assay and ICP/AES on a 30-gram charge. In addition, analyses are done for silver, copper, lead, and zinc using 4-acid digestion and ICP analysis. Samples with silver values greater than 100 g/t; and copper, lead, or zinc values greater than 10,000 ppm (1%) are re-analyzed using 4-acid digestion and atomic absorption spectrometry (AAS).

Quality-control (QC) samples are inserted in the sample stream every 20 samples on average, and thus represent 5% of the total samples. QC samples include standards, blanks, and duplicate samples. Standards are pulps that have been prepared by a third-party laboratory; they have gold, silver, and base-metal values that are established by an extensive analytical process in which several commercial labs (including ALS Minerals) participate. Standards test the calibration of the analytical equipment. Blanks are rock material known from prior sampling to contain less than 0.005 ppm gold; they test the sample preparation procedure for cross-sample contamination. In the case of duplicates, the sample interval is cut in half and then quartered. The first quarter is the original sample, the second becomes the duplicate. Duplicate samples provide a test of the reproducibility of assays in the same drilled interval. When final assays are received, QC sample results are inspected for deviation from accepted values. To date, QC sample analytical results have fallen in acceptable ranges on the Alamos project.

When final assays are received, QC sample results are inspected for deviation from accepted values by the QP. To date, QC sample analytical results have fallen in acceptable ranges on the Alamos project.

ALS Minerals is independent of Minaurum Gold and is independent of the Qualified Person.

Cautionary Note Regarding Forward-Looking Information: This news release contains "forward-looking information" within the meaning of applicable Canadian securities legislation. "Forward-looking information" includes, but is not limited to, statements with respect to activities, events or developments that the Company expects or anticipates will or may occur in the future. Generally, but not always, forward-looking information and statements can be identified by the use of words such as "plans", "expects", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", or "believes" or the negative connotation thereof or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" or the negative connotation thereof.

In making the forward-looking information in this release, Minaurum has applied certain factors and assumptions that are based on Minaurum's current beliefs as well as assumptions made by and information currently available to Minaurum. Although Minaurum considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect, and the forward-looking information in this release are subject to numerous risks, uncertainties and other factors that may cause future results to differ materially from those expressed or implied in such forward-looking information.

Readers are cautioned not to place undue reliance on forward-looking information. Minaurum does not intend, and expressly disclaims any intention or obligation to, update or revise any forward-looking information whether as a result of new information, future events or otherwise, except as required by law.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/271943

FAQ

What were the top drill results for Minaurum (MMRGF) at Alamos on October 29, 2025?

Top results include AL25-141: 4.80 m @ 287 g/t AgEq (incl. 0.50 m @ 1,029 g/t AgEq) and AL25-142: 4.53 m @ 396 g/t AgEq (incl. 0.50 m @ 1,271 g/t AgEq).

How many holes did Minaurum complete in the 2025 Alamos resource-definition program?

Minaurum completed 35 holes on the Europa, Promontorio, and Travesia vein zones, with assays received for AL25-129 through AL25-149.

Do Minaurum's Alamos assays show continuity of high-grade silver for MMRGF?

Yes; drilling reported continuity down-dip and along-strike with multiple stacked high-grade intervals at Europa and Promontorio.

Are all assay results for the Alamos 2025 program finalized for MMRGF?

No; assays have been received for AL25-129 to AL25-149, while results for remaining holes are still pending.

Were Minaurum's Alamos assay results independently re-analyzed before release?

No; the release states that assay results have not been checked by re-analysis, though QA/QC samples reportedly fell in acceptable ranges.

What commodity prices were used to calculate AgEq in Minaurum's Alamos results?

Weight-averaged AgEq grades used the CIBC long-term analyst consensus prices dated Oct 1, 2025: Ag $29.73/oz, Au $2,646/oz, Cu $4.34/lb, Pb $0.92/lb, Zn $1.21/lb.