Minaurum Gold Inc. (TSX-V: MGG) (OTCQX: MMRGF) (FSE: 78M)  is pleased to announce results from the Promontorio Sur vein zone at its Alamos Silver Project in Sonora, Mexico. The 1.5 km-long Promontorio Sur vein zone represents the unmined southern continuation of the recently identified high-grade Promontorio “stacked” vein zone. It is separated by a northwest trending, steeply southwest dipping fault that cuts four separate substantial vein structures, including the Las Guijas vein zone where the widest high-grade intercept drilled at Alamos returned 36.65 m of 328 g/t silver equivalent ‘AgEq’ (AL24-117) at Alamos (see news release dated February 27, 2025).

Exploratory drilling at Promontorio Sur has intersected mineralization typically seen at high levels of the Alamos vein system, indicating that high grade mineralization should be found at depth. Results include 1.05 m of 272 g/t AgEq, which included 0.20 m of 617 g/t AgEq (304 g/t Ag) and 2.65 m of 142 g/t AgEq, including 0.45 m of 300 g/t AgEq and a gold grade of 3.26 g/t Au (AL19-020), followed by a wide interval of CRD replacement-type mineralization including 4.95-m of 174 g/t AgEq that included 0.45 m of 536 g/t AgEq (5.41% Pb and 12.85% Zn) (see news release dated August 22, 2019) (Table 1, Figures 1-4).

“The Promontorio Sur vein zone presents a compelling opportunity to unlock a previously untapped section of the highest-grade stacked vein system within the Alamos Project. This prolific vein system hosts the historic Promontorio Mine, which has produced over 70 million ounces of silver, as well as the nearby La Quintera Mine—just 1 km to the north—which is estimated to have yielded an impressive 100 million ounces of silver. With 1.5 km of known strike length, Promontorio Sur represents one of the largest, virgin exploration targets at the Alamos Silver project,” stated Darrell Rader, President and CEO of Minaurum Gold, “We look forward to testing this target further.”

Quintera-Promontorio-Promontorio Sur Structural Trend

Promontorio Sur is the southernmost segment of the 3.5 km-long Promontorio-Quintera structural trend. The Promontorio-Quintera trend and its and hosted veins are cut by a northwest-striking, steeply southwest-dipping fault that cuts the high-grade Las Guijas vein. Displacement of the faulted-off portion of Las Guijas is estimated to be at least 200 m, with the southwestern side of the fault, including the Promontorio Sur zone, down-dropped relative to the northeastern side of the fault. Horizontal displacement appears to be in the order of tens of metres.

The Promontorio Sur vein zone can be traced on surface for 1.5 km as quartz-carbonate veinlets hosted in andesitic agglomerate. The veinlets are interpreted as representing high levels of the epithermal system, with potential for high-grade mineralization at depth. Outcrop geochemical sampling shows anomalous values of silver, gold, and base metals along the structure. Minaurum drilling shows that the andesite overlies altered and mineralized limestone, with mineralization occurring at a fault contact between volcanic rocks and limestone, as well as skarn and replacement-type mineralization within altered limestone.

Drilling to date at Promontorio and Promontorio Sur also indicates a significant skarn/carbonate replacement mineralization hosted by limestone in the footwall of the vein zones. The lead-zinc (gold) skarn/CRD event appears to have occurred later than the epithermal silver-copper mineralization and represents a large target.

Further exploration of the Promontorio Sur zone will focus on drilling the faulted-off portion of the Promontorio zone, Las Guijas vein as well as drilling under the area of the anomalous rock geochemistry (Figures 1 – 4). The Promontorio Stacked Vein Zone contains multiple high-grade veins, but remains significantly under explored, making it a target for systematic drill testing.

 Figure 1. Promontorio Sur Vein Zone, showing drill intercepts. Click image to enlarge.

Figure 2. Promontorio Sur vein zone in relation to the Promontorio-Quintera structural trend and Central Graben.

Holes AL24-124, AL24-127, and AL24-128 tested the Promontorio Sur zone between the northwest fault and AL19-020 (Figure 1-4, Table 1). AL24-124 cut 2.25 m of 134 g/t AgEq, including 0.40 m of 434 g/t AgEq or 0.60% Cu, 3.15% Pb and 6.49% Zn. AL24-127 and AL24-128 each intersected <0.65 m mineralized intervals that assayed 3.04% to 9.12% combined Pb and Zn.

Table 1. Assay highlights of holes AL24-124, -127, and -128; and holes AL19-020 and -024. Hole locations are shown in Figure 1. Weight-averaged silver-equivalent grades are based on January 1, 2025 Kitco.com metal prices: Ag $28.43/oz, Au $2,565.68/oz, Cu $3.93/lb, Pb $0.86/lb, Zn $1.32/lb. Results of holes AL19-020 and -024 were announced in a Minaurum new release dated 22 August 2019.

Figure 3. Longitudinal section of Promontorio Sur vein zone, looking ESE, showing areas targeted for drilling.

Figure 4. Longitudinal section of Travesía – Promontorio – Promontorio Sur.

Minaurum Gold Inc. 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.