MGG.V · 2026-09-22 12:00:00

Minaurum Resource Step-Out Drilling Returns: 3.40 m of 397 g/t AgEq at Europa Sur, 1.90 m of 323 g/t AgEq at Quintera, and 0.90 m of 1469 g/t AgEq at San Jose in Alamos Silver Project

Drill Results

NEWS RELEASE

MINAURUM SILVER INC.

FOR RELEASE: September 24, 2026 TRADING SYMBOL TSX.V: MGG

Minaurum Resource Step-Out Drilling Returns:

3.40 m of 397 g/t AgEq at Europa Sur, 1.90 m of 323 g/t AgEq at Quintera,

and 0.90 m of 1469 g/t AgEq at San Jose in Alamos Silver Project

Minaurum Silver Inc. (“Minaurum” or the “Company”) (TSXV: MGG) (OTCQX: MMRGF)

is pleased to report high -grade silver drill results from the Europa, Quintera, San Jos e, and

Promontorio Sur Vein Zones, as part of its ongoing Phase II, 50,000 -metre resource-expansion

drilling program at the Alamos Silver Project (“Alamos”) in Sonora, Mexico.

Highlights include:

Europa Sur Vein Zone

• 1.60 m of 412 g/t silver equivalent (“AgEq”)

(314 g/t Ag, 0.41 g/t Au, 0.42% Cu, 0.41% Pb, 0.78% Zn)

including 0.40 m of 708 g/t AgEq

(409 g/t Ag, 1.51 g/t Au, 1.27% Cu, 0.82% Pb, 1.66% Zn) (Hole AL26-233)

• 3.40 m of 397 g/t AgEq

(237 g/t Ag, 0.20 g/t Au, 0.95% Cu, 0.80% Pb, 1.87% Zn)

including 0.30 m of 1,433 g/t AgEq

(1,135 g/t Ag, 0.23 g/t Au, 2.26% Cu, 1.42% Pb, 2.36% Zn) (Hole AL26-246)

Quintera Vein Zone

• 1.90 m of 323 g/t AgEq

(263 g/t Ag, 0.02 g/t Au, 0.44% Cu, 0.27% Pb, 0.63% Zn) (Hole AL26-243)

• 0.50 m of 1,559 g/t AgEq

(1,460 g/t Ag, 0.04 g/t Au, 1.11% Cu, 0.01% Pb, 0.01% Zn) (Hole AL26-250)

San Jose Vein Zone

• 0.90 m of 1,469 g/t AgEq

(1,103 g/t Ag, 0.26 g/t Au, 2.42% Cu, 2.80% Pb, 3.35% Zn)

including 0.50 m of 2,425 g/t AgEq

(1,910 g/t Ag, 0.43 g/t Au, 3.90% Cu, 1.60% Pb, 4.71% Zn) (Hole AL26-249)

“Resource-expansion drilling continues to demonstrate the strong continuity of our high -

grade silver vein zones —including Quintera and Europa Sur —while the San Jose vein

delivered impressive results with silver grades exceeding 1 kg/t,” stated Darrell Rader,

President and CEO. “Additionally, Promontorio Sur received its first round of step -out

drilling, yielding encouraging initial results, with further assays to be released as they

become available.”

Figure 1. Plan view showing locations of Quintera, Promontorio, Europa, and San Jos e vein zones. Click to

enlarge.

Quintera - Travesia Vein Zones

Drilling at Quintera is successfully defining the vertical and horizontal extent of the high -

grade silver shoot both below and along strike of the historical workings. Positioned 100 to

150 metres in the hanging wall (western side) of the Quintera vein zone, the Travesia vein zone

allows a single drill hole to intersect both systems. Although Quintera was excluded from

Minaurum’s initial resource estimate (see news release dated January 28, 2026), it will be

incorporated into the upcoming resource update.

In the Travesia vein zone, hole AL26-243 intersected 1.90 m of 323 g/t AgEq, including 0.50 m

of 715 g/t AgEq (637 g/t Ag, 0.69% Cu, 0.30% Pb, 0.53% Zn). Hole AL26-236 and hole AL25-

250 cut 0.65 m of 318 g/t AgEq (236 g/t Ag, 0.01 g/t Au, 0.84% Cu, 0.31% Pb, 0.10% Zn) and

0.50 m of 1,559 g/t AgEq, respectively in the Quintera vein zone. Hole AL26-250 cuts Quintera

approximately 100 m down-dip from the 5.95 m of 1,117 g/t AgEq intersection (Hole AL26-215)

(see news release dated July 8, 2026), while hole AL26-236 cut the Quintera zone about 80 m to

the north and 20 m higher than the AL26-250 intercept (Table 1, Figures 2, 3, and 4).

Table 1. Assay highlights for Quintera and Travesia vein zones. True widths are based on current interpretation

of mineralized structures. Weight-averaged silver-equivalent grades (AgEq g/t) are based on the 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. Metallurgical recovery assumption: 88.3% for Ag, 88.5% for Au, 75.5%

for Cu, 83% for Pb, 75% for Zn.

Hole From

(m)

Interval

(m)

True

Width

(m)

g/t

AgEq

g/t

AL26-236

341.70 342.00 0.30 0.25 162 0.00 0.45 0.11 0.02 203

465.15 465.80 0.65 0.50 236 0.01 0.84 0.31 0.10 318

491.00 491.60 0.60 0.45 70 0.11 0.25 0.27 1.33 138

AL26-243

227.80 229.70 1.90 1.35 263 0.02 0.44 0.27 0.63 323

including

227.80 228.30 0.50 0.35 637 0.00 0.69 0.30 0.53 715

AL26-250 473.35 473.65 0.30 0.25 112 0.00 0.26 0.71 0.38 157

565.05 565.55 0.50 0.40 1460 0.04 1.11 0.01 0.01 1559

Figure 2. Longitudinal section of Travesia vein zone, showing position of drill intercepts. Click to enlarge.

Figure 3. Longitudinal section of Quintera vein zone, showing drill intercepts and historical workings.

Click to enlarge.

Figure 4. Cross section of Travesia and Quintera vein zone s, showing relationship of hole AL26 -250 to holes

AL26-215 and historical workings. Click to enlarge.

Promontorio Sur Vein Zone

South of the Promontorio mine, quartz-calcite veinlets with anomalous values of silver and copper

cut andesitic volcanic rocks and can be traced for more than 1 km. Previous drilling reported high

grades in the northern part of the Promontorio S ur vein zone adjacent to the NW -trending fault

that separates it from the Promontorio zone in fault -controlled veining as well as in carbonate -

replacement in limestone beneath the volcanics (see news releases dated August 22, 2019;

September 24, 2024; February 13 and 27, 2025).

Step-out drilling about 200 m to the south of the NW-trending fault in Hole AL26-248 intersected

0.45 m of 386 g/t AgEq (177 g/t Ag, 0.86 g/t Au, 1.18% Cu, 0.30% Pb, 1.04% Zn ) within a 6

m-wide vein zone (Table 2, Figure 2). Drilling continues at Promontorio Sur with assays pending.

Table 2. Assay highlights for Promontorio Sur vein zone . True widths are based on current interpretation of

mineralized structures. Weight-averaged silver-equivalent grades (AgEq g/t) are based on the 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. Metallurgical recovery assumption: 88.3% for Ag, 88.5% for Au, 75.5% for

Cu, 83% for Pb, 75% for Zn

Hole From

(m)

Interval

(m)

True

Width

(m)

g/t

AgEq

g/t

AL26-248

83.50 85.60 2.10 1.90 41 0.51 0.28 0.17 0.30 121

including

83.50 83.95 0.45 0.40 177 0.86 1.18 0.30 1.04 386

and

85.10 85.60 0.50 0.45 2 0.93 0.04 0.33 0.26 101

Europa – Europa Sur Vein Zones

Europa Sur was not included in Minaurum’s initial resource (see news release dated January 28,

2026). Recent drilling at Europa Sur includes holes designed to intersect the upper 150-200 metres

(from surface) of the structure.

Drill results to date from Europa Sur, including those in this news release show significant

potential for resource expansion outside of the central Europa vein zone (see news releases

dated March 31, May 27, and July 8, 2026). Furthermore, the zone is distinct from the central

part of the Europa zone for its locally higher grades of gold and copper (see news release

dated May 27, 2026).

Several high -grade silver, gold and copper intercepts were returned in addition to the

headline holes AL26-233 (0.40 m of 409 g/t Ag, 1.51 g/t Au, 1.27% Cu) and AL26-246 (0.30 m

of 1,135 g/t Ag, 0.23 g/t Au, 2.26% Cu). AL26-253 intersected a 3.15 m interval of mineralization

including 0.55 m of 298 g/t AgEg (185 g/t Ag, 0.02 g/t Au, 0.80% Cu, 0.82% Pb, 1.14% Zn) .

Hole AL26-232 intersected 1.80 m of mineralization which included 0.30 m of 341 g/t AgEq (261

g/t Ag, 0.01 g/t Au, 0.80% Cu, 0.31% Pb, 0.18% Zn) (Table 3, Figures 5 and 6).

Both are step-out holes approximately 80 m below and above, respectively, intersecting the pinch

of the vein as indicated by the previously drilled higher grade intercept in hole AL26-225

returning 5.15 m of 392 g/t AgEq (198 g/t Ag, 0.27 g/t Au, 1.10% Cu , 1.69% Pb, 1.75% Zn)

(see news release dated August 25, 2026).

Hole AL26-239 cut 2.70 m of 179 g/t AgEq (79 g/t Ag, 0.36 g/t Au, 0.27% Cu, 0.57% Pb, 1.40%

Zn) including 0.30 m of 734 g/t AgEq (343 g/t Ag, 1.31 g/t Au, 1.58% Cu, 1.28% Pb, 4.80%

Zn) demonstrating the potential for additional high-grade gold and copper.

Figure 5. Longitudinal section of Europa-Europa Sur vein zone , showing locations of highlighted mineralized

intersections. Click to enlarge.

Figure 6. Cross section of Europa-Europa Sur vein zone , showing locations of highlighted mineralized

intersections n hole AL26-253 above and AL26-232 below AL26-225. Click to enlarge

Table 3. Assay highlights for Europa Sur vein zone. True widths are based on current interpretation of mineralized

structures. Weight-averaged silver-equivalent grades (AgEq g/t) are based on the 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. Metallurgical recovery assumption: 88.3% for Ag, 88.5% for Au, 75.5% for Cu, 83% for

Pb, 75% for Zn.

Hole From

(m)

Interval

(m)

True

Width

(m)

g/t

AgEq

g/t

AL26-232

173.30 173.65 0.35 0.32 162 0.05 0.36 0.45 0.75 224

439.45 441.25 1.80 1.62 87 0.00 0.38 0.32 0.29 133

including

439.45 439.75 0.30 0.27 261 0.01 0.80 0.31 0.18 341

and

440.65 441.25 0.60 0.54 88 0.01 0.50 0.44 0.42 150

444.60 444.90 0.30 0.27 190 0.01 0.37 1.07 0.24 249

AL26-233

135.20 136.80 1.60 1.36 314 0.41 0.42 0.41 0.77 412

including

135.20 135.60 0.40 0.34 409 1.51 1.27 0.82 1.66 708

170.95 171.40 0.45 0.40 274 0.06 0.43 0.29 0.57 335

176.80 177.70 0.90 0.75 144 0.02 0.20 0.21 0.43 177

including

177.40 177.70 0.30 0.25 340 0.04 0.38 0.49 1.00 409

238.75 239.05 0.30 0.25 444 0.08 0.76 0.45 0.12 528

283.20 283.50 0.30 0.25 620 0.07 0.52 0.58 0.17 686

289.90 290.20 0.30 0.25 166 0.05 0.19 0.21 0.14 194

309.05 309.35 0.30 0.25 471 0.13 0.63 0.97 0.44 566

AL26-234 458.65 459.35 0.70 0.65 114 0.01 0.13 0.12 0.54 141

AL26-235 264.10 264.40 0.30 0.28 141 0.05 0.53 0.32 1.19 226

AL26-237 413.85 414.15 0.30 0.28 143 0.01 0.27 0.13 0.15 173

AL26-239

257.35 257.65 0.30 0.25 801 0.18 0.39 0.39 0.79 877

268.40 269.00 0.60 0.50 547 0.12 0.81 0.57 0.31 646

412.60 415.30 2.70 2.30 79 0.36 0.27 0.57 1.40 179

including

412.60 413.80 1.20 1.05 134 0.68 0.56 0.97 2.44 320

which includes

412.90 413.20 0.30 0.25 343 1.31 1.58 1.28 4.80 734

418.30 418.90 0.60 0.50 400 0.33 0.24 0.63 1.43 496

AL26-240 459.40 459.70 0.30 0.25 57.8 0.03 0.09 1.00 2.41 145

AL26-242

295.00 298.20 3.20 2.75 159 0.07 0.15 0.29 0.61 198

including

296.45 298.20 1.75 1.50 231 0.11 0.18 0.43 0.89 286

which includes

297.70 298.20 0.50 0.43 355 0.16 0.16 0.46 0.62 406

AL26-245 289.95 290.50 0.55 0.45 99 0.02 0.25 0.39 1.84 174

AL26-246

143.05 144.80 1.75 1.25 180 0.03 0.22 0.40 0.60 223

including

143.05 143.45 0.40 0.30 303 0.05 0.35 0.50 1.20 375

394.10 397.50 3.40 2.50 237 0.20 0.95 0.80 1.87 397

including

394.85 395.15 0.30 0.20 1135 0.23 2.26 1.42 2.36 1433

and

396.20 397.50 1.30 1.00 262 0.33 1.63 1.43 3.02 530

AL26-247

160.85 161.15 0.30 0.28 120 0.03 0.18 0.30 0.64 160

211.10 211.75 0.65 0.60 621 0.18 0.92 1.63 3.72 837

296.20 297.70 1.50 1.35 223 0.01 0.14 0.16 0.16 243

including

296.20 296.60 0.40 0.35 443 0.02 0.25 0.16 0.06 471

342.05 342.40 0.35 0.30 284 0.01 0.30 0.62 1.59 361

385.20 386.00 0.80 0.75 375 0.09 0.78 0.25 0.95 477

including

385.65 386.00 0.35 0.32 752 0.18 1.56 0.42 1.80 952

411.00 416.05 5.05 4.55 181 0.03 0.35 0.57 1.00 248

including

412.30 414.00 1.70 1.55 336 0.04 0.69 0.80 2.06 464

and

415.55 416.05 0.50 0.45 311 0.06 0.47 1.24 0.37 390

AL26-252 135.80 137.15 1.35 0.95 84 0.30 0.31 0.50 1.23 176

AL26-253

352.85 356.00 3.15 2.80 112 0.04 0.34 0.74 0.86 180

including

353.75 354.30 0.55 0.50 185 0.02 0.80 0.82 1.14 298

and

355.70 356.00 0.30 0.27 104 0.27 0.45 4.20 3.05 324

371.80 373.70 1.90 1.70 75 0.06 0.47 0.41 0.29 136

including

373.30 373.70 0.40 0.37 184 0.11 1.32 0.66 0.72 337

AL26-255

167.65 168.60 0.95 0.75 235 0.00 0.20 0.11 0.07 256

including

167.65 168.10 0.45 0.35 374 0.00 0.30 0.18 0.10 406

San Jose Vein Zone

Hole AL26-249 demonstrated the high-grade potential of the San Jos e vein zone, intersecting

0.90 m of 1,469 g/t AgEq (1,103 g/t Ag, 0.26 g/t Au, 2.42 % Cu, 2.80% Pb, 3.35% Zn) ,

including 0.50 m of 2,425 g/t AgEq (1,910 g/t Ag, 0.43 g/t Au, 3.90% Cu, 1.59% Pb, 4.71%

Zn) (Table 4, Figure 7).

Figure 7. Longitudinal section of the San Jose vein zone, showing positions of drill intercepts.

Table 4. Assay highlights for San Jose vein zone. True widths are based on current interpretation of mineralized

structures. Weight-averaged silver-equivalent grades (AgEq g/t) are based on the 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. Metallurgical recovery assumption: 88.3% for Ag, 88.5% for Au, 75.5% for Cu, 83% for

Pb, 75% for Zn.

Hole From

(m)

Interval

(m)

True

Width

(m)

g/t

AgEq

g/t

AL26-231 310.40 311.50 1.10 0.95 74 0.03 0.34 0.12 0.03 109

AL26-238 150.15 150.75 0.60 0.56 93.4 0.00 0.10 0.07 0.08 106

AL26-241

210.50 215.50 5.00 4.00 142 0.02 0.16 0.39 0.26 171

including

211.10 211.50 0.40 0.33 284 0.02 0.51 0.50 0.15 343

AL26-244 191.65 192.00 0.35 0.30 68.3 0.02 0.06 0.10 0.04 79

AL26-249

162.80 163.70 0.90 0.85 1103 0.26 2.42 2.80 3.35 1469

including

163.20 163.70 0.50 0.48 1910 0.43 3.90 1.59 4.71 2425

AL26-251 146.90 147.55 0.65 0.50 18 0.00 0.14 0.00 0.01 30

AL26-254

162.45 163.20 0.75 0.68 133 0.02 0.36 0.03 0.07 167

275.65 277.45 1.80 1.65 83 0.01 0.06 2.18 1.15 160

including

275.65 276.10 0.45 0.40 165 0.03 0.05 3.58 0.91 265

YouTube: @MinaurumSilver

X: @MinaurumSilver

LinkedIn: Minaurum Silver Inc.

Facebook: Minaurum Silver Inc.

Subscribe to our email list at www.minaurum.com

← Back to feed