Minaurum Drills High-Grade Silver at Alamos including: 21.45 m of 220 g/t AgEq, 5.85 m of 476 g/t AgEq and 1.75 m of 845 g/t AgEq

Rhea-AI Summary

Minaurum Gold (OTCQX: MMRGF) reported initial results from its 2025 resource-definition drill program at the Alamos silver project in Sonora, Mexico, targeting Promontorio, Europa and Travesia vein zones.

Key intercepts include 21.45 m of 220 g/t AgEq at Promontorio and multiple high-grade Europa results such as 5.85 m of 476 g/t AgEq (including 1.80 m of 1,339 g/t AgEq) and 1.75 m of 845 g/t AgEq. Assays received for holes AL25-129 to AL25-140; remaining assays pending. Results will feed an upcoming maiden resource estimate.

Positive

• Wide skarn/CRD intercept: 21.45 m at 220 g/t AgEq
• High-grade Europa intercept: 5.85 m at 476 g/t AgEq (includes 1.80 m at 1,339 g/t AgEq)
• Multiple near-surface and down-dip hits to support resource modelling (holes AL25-129 to AL25-140)

Negative

• Remaining assay results are pending, leaving full extent of mineralization unconfirmed
• Assay results have not been checked by re-analysis, introducing verification uncertainty

Vancouver, British Columbia--(Newsfile Corp. - October 16, 2025) - Minaurum Gold Inc. (TSXV: MGG) (OTCQX: MMRGF) ("Minaurum") is pleased to announce the initial results of its 2025 resource-definition drill program targeting the Promontorio, Europa, and Travesia vein zones at its Alamos Silver Project ("Alamos") in Sonora, Mexico. These vein zones returned numerous high-grade intersections including: (Table 1; Figures 1-3).

• 5.85 m of 476 g/t silver equivalent ("AgEq") including 1.80 m of 1,339 g/t AgEq (Hole AL25-135)
• 21.45 m of 220 g/t AgEq including 1.00 m of 497 g/t AgEq and 1.20 m of 1,377 g/t AgEq (Hole AL25-138)
• 2.40 m of 499 g/t AgEq including 0.85 m of 981 g/t AgEq (Hole AL25-139)
• 1.75 m of 845 g/t AgEq including 0.50 m of 1,366 g/t AgEq (Hole AL25-139)

"Drilling at both Europa and Promontorio continues to confirm the continuation of strong, wide zones of high-grade silver mineralization at depth and along strike," stated Darrell Rader, President and CEO of Minaurum Gold. "At Promontorio, drilling intersected over 21 metres of robust carbonate replacement-style lead-zinc-silver mineralization. These drill results along with those pending assays, will be incorporated into and will complete the data set for our upcoming maiden resource estimate."

2025 Resource-Definition Drilling

Minaurum has to date completed 28 holes on the Europa, Promontorio, and Travesia vein zones. Assays have been received for holes AL25-129 through AL25-140 with assays pending for the remainder (Figure 1).

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 show significant skarn/carbonate replacement (CRD) mineralization hosted by limestone in the footwall of the vein zones. Hole AL25-138 intersected a significant wide zone of skarn/CRD lead- and zinc-sulfide mineralization including silver and gold values: 21.45 m of 220 g/t AgEq including 1.00 m of 497 g/t AgEq and 1.20 m of 1,377 g/t AgEq (440 g/t Ag, 1.499 g/t Au, 9.089% Pb, 18.783% Zn) (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/3455/270488_99d135ace4b24907_003full.jpg

Table 1. Assay highlights of holes AL25-129 - AL25-140. 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.

Europa
Hole	From (m)	To (m)	Interval (m)	Ag g/t	Au g/t	Cu %	Pb %	Zn %	AgEq g/t
AL25-131	389.30	390.50	1.20	96	26	0.601	0.188	1.022	191
	including
	389.30	389.70	0.40	189	36	1.040	0.224	2.050	358
AL25-134	189.50	190.00	0.50	161	0.016	0.313	0.421	0.173	208
	243.20	243.70	0.50	122	0.003	0.149	0.235	0.453	155
	303.70	304.20	0.50	106	0.006	0.343	2.080	1.620	230
	353.00	355.15	2.15	108	0.004	0.120	0.149	0.224	130
	363.90	364.40	0.50	341	0.056	0.328	0.174	0.332	392
AL25-135	317.95	318.65	0.70	120	0.002	0.089	0.024	0.061	131
	360.90	361.35	0.45	909	0.023	0.619	0.136	0.176	981
	373.75	379.60	5.85	380	0.085	0.598	0.234	0.854	476
	including
	376.20	378.00	1.80	1,093	0.148	1.687	0.358	2.023	1,339
	which includes
	376.20	376.90	0.70	2,180	0.295	2.780	0.675	3.670	2,601
AL25-137	491.37	492.15	0.78	151	0.020	0.255	0.594	0.462	204
	including
	491.70	492.15	0.45	196	0.030	0.290	0.833	0.294	254
	497.07	497.60	0.53	79	0.050	0.317	0.470	1.400	164
AL25-139	306.30	308.70	2.40	380	0.037	0.542	0.607	1.745	499
	including
	306.30	307.15	0.85	769	0.042	0.953	0.923	3.330	981
	and
	308.50	308.70	0.20	866	0.037	0.828	1.780	2.690	1,065
	324.60	326.35	1.75	495	0.021	0.473	1.017	1.537	845
	including
	324.60	325.10	0.50	851	0.356	1.385	7.310	6.790	1,366
Promontorio
Hole	From (m)	To (m)	Interval (m)	Ag g/t	Au g/t	Cu %	Pb %	Zn %	AgEq g/t
AL25-138	156.00	177.45	21.45	54	0.365	0.124	1.315	3.348	220
	Including
	168.50	177.45	8.95	111	0.494	0.220	2.150	4.450	325
	And
	171.00	172.00	1.00	181	0.645	0.127	3.610	6.080	497
	and
	176.25	177.45	1.20	440	1.499	0.863	9.089	18.783	1,377
	235.05	236.05	1.00	7	0.084	0.010	0.669	4.145	145
AL25-140	199.85	200.95	1.10	30	0.119	0.146	2.686	4.415	235
	including
	200.30	200.95	0.65	37	0.153	0.175	3.240	5.540	292
	205.00	208.05	3.05	7	0.032	0.003	2.605	2.788	143
	including
	205.80	206.75	0.95	9	0.048	0.003	3.660	4.850	227
	241.40	241.85	0.45	49	0.171	0.051	0.606	1.975	138

 

Travesia
Hole	From (m)	To (m)	Interval (m)	Ag g/t	Au g/t	Cu %	Pb %	Zn %	AgEq g/t
AL25-129	225.60	228.40	2.80	92	0.060	0.251	0.104	0.671	144
	258.80	259.10	0.30	79.6	0.008	0.326	1.065	0.858	159
AL25-130	164.20	165.60	1.40	79.6	0.008	0.326	1.065	0.858	159
AL25-132	338.55	339.25	0.70	302	0.063	0.557	0.019	0.085	366
	341.20	342.00	0.80	74.6	0.340	0.297	0.028	0.136	139
AL25-133	106.25	106.75	0.50	187	0.012	0.639	0.003	0.012	252
	406.35	407.60	1.25	248	0.106	0.336	0.138	0.174	299
AL25-136	359.40	360.85	1.45	99	0.074	0.240	0.114	0.083	134
	including
	360.50	360.85	0.35	275	0.179	0.595	0.240	0.224	362
	363.90	364.30	0.40	127	0.021	0.211	0.139	0.059	155
	455.20	455.70	0.50	90.1	0.039	0.123	0.093	0.146	112

 

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/3455/270488_figure%202%20-%20mgg%20dh%20129-140%20nr%20figure%20-%20travesia-promontorio%20ls%20draft_101525.png

Europa Vein Zone

Europa drilling in 2025 has extended know mineralization at Europa, most notably down-dip in holes AL25-135 and AL25-137 (Table 1 and Figure 3). Holes AL25-131, AL25-134, and AL25-139 filled in gaps between known vein intersections. Assays are pending for several more holes at Europa and drilling continues to step out along strike and down dip. Significant mineralization was intersected in Hole AL25-135 which returned 5.85 m of 476 g/t AgEq including 0.70 m of 2,601 g/t AgEq (2,180 g/t Ag); and hole AL25-139 returned 2.40 m of 499 g/t AgEq including 0.50 m of 1,366 g/t AgEq (851 g/t Ag).

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/3455/270488_figure%203-%20mgg%20dh%20129-140%20nr%20figure%20-%20europa%20ls%20draft_101425.png

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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 
Telephone: 1 778 330-0994
Vancouver, BC V6C 3L6 
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/270488

FAQ

What drill highlights did Minaurum (MMRGF) report at Alamos on October 16, 2025?

Minaurum reported intercepts including 21.45 m of 220 g/t AgEq at Promontorio and 5.85 m of 476 g/t AgEq at Europa, among others.

How will the October 2025 drill results affect Minaurum (MMRGF) maiden resource timing?

The received assays (AL25-129 to AL25-140) and pending results will be incorporated to complete data for the upcoming maiden resource estimate.

Which Minaurum (MMRGF) veins returned the highest-grade silver-equivalent intercepts in 2025 drilling?

Europa returned very high-grade intercepts (e.g., 5.85 m at 476 g/t AgEq with internal 1.80 m at 1,339 g/t AgEq); Promontorio returned a wide CRD-style interval (21.45 m at 220 g/t AgEq).

Are all assays from Minaurum's (MMRGF) 2025 Alamos program complete and verified?

Assays have been received for holes AL25-129 to AL25-140 with others pending; results have not been re-analyzed and pending assays remain to be verified.

What commodity price basis did Minaurum (MMRGF) use to report AgEq grades?

AgEq grades are weight-averaged using the October 1, 2025 CIBC analyst consensus prices: Ag $29.73/oz, Au $2,646/oz, Cu $4.34/lb, Pb $0.92/lb, Zn $1.21/lb.

Will Minaurum (MMRGF) use the 2025 drill data at Alamos to create a resource estimate?

Yes. The company stated the 2025 drilling results and pending assays will complete the dataset for a maiden resource estimate.