Avino Drills 1,638 g/t Silver Over 7.90 Metres Including 15,352 g/t Silver Over 0.37 Metres at La Preciosa

Rhea-AI Summary

Avino Silver & Gold Mines (NYSE:ASM) has reported exceptional drilling results from its La Preciosa project, with significant high-grade silver intersections. The standout result includes 1,638 g/t silver and 1.92 g/t gold over 7.90 metres true width, including an impressive 15,352 g/t silver and 1.55 g/t gold over 0.37 metres in Hole PMLP 25-03.

The company completed four drill holes totaling 1,100 metres, intersecting the La Gloria vein in all holes and the Abundancia vein in three holes. The results exceeded grade expectations and verified the current vein-based resource model's geometry. Notable intercepts also include 544 g/t silver and 0.46 g/t gold over 6.42 metres in Hole PMLP 25-04.

Positive

• None.

Negative

• High nugget effects and pinch and swell geometry indicate potential grade variability
• Mineralization width varies significantly over short distances (under 10 metres)

Insights

Mining Geologist & Resource Analyst

Avino reports exceptional high-grade silver intercepts at La Preciosa, significantly exceeding current resource grade expectations.

The drilling results from La Preciosa represent exceptionally high-grade silver intercepts that substantially exceed average grades in the current resource. The headline intercept of 1,638 g/t silver over 7.90 meters true width, including an ultra-high-grade section of 15,352 g/t silver over 0.37 meters, demonstrates remarkable mineralization strength. For context, these grades are multiples higher than what would typically be considered high-grade in most silver deposits globally.

The confirmation of both grade and geometry through these twin holes validates the geological model while suggesting potential upside. The intercepts across both La Gloria and Abundancia veins demonstrate the classic epithermal "pinch and swell" vein characteristics typical of Mexican silver deposits, with remarkable grade consistency across multiple holes. The identification of additional unnamed veins with significant silver grades (525 g/t Ag in one case) indicates potential for satellite mineralization beyond the main veins.

The geological description reveals a complex, multi-phase epithermal system with extensive mineralization including acanthite (the primary silver-bearing mineral), along with various sulfides and precious metals. This mineral assemblage is characteristic of intermediate-sulfidation epithermal deposits, which often host significant precious metal accumulations with good depth potential.

Most significantly, management's comments about potentially using underground mining methods suggests they're evaluating a more selective mining approach that would target these higher-grade zones rather than lower-grade bulk mining. This approach typically results in lower capital costs but requires consistently high grades to be economical - something these results support. The continued step-out drilling to the north of La Gloria vein could potentially expand the resource if the higher grades continue in that direction.

VANCOUVER, BC / ACCESS Newswire / August 18, 2025 / Avino Silver & Gold Mines Ltd. (TSX:ASM)(NYSE American:ASM)(FSE:GV6)("Avino" or "the Company") reports results of four drill holes from La Preciosa which were drilled to twin previous drilling. Assay results for the intercepts of the La Gloria and Abundancia veins were very positive and are shown in Table 1.

Selected Intercept Highlights:

• Hole PMLP 25-03: 1,638 g/t Ag and 1.92 g/t Au over 7.90 metres true width

  • including 15,352 g/t Ag and 1.55 g/t Au over 0.37 metres true width

• Hole PMLP 25-04: 544 g/t Ag and 0.46 g/t Au over 6.42 metres true width

  • including 1,739 g/t Ag and 0.74 g/t Au over 0.66 metres true width

The variation of grades and thicknesses within relatively short distances (under 10 metres) compared with previously drilled intercepts were expected due to the "pinch and swell" geometry of the La Preciosa veins and the high nugget effects. The drill results exceeded grade expectations and verified the geometry of the current vein-based resource model. Higher grades intersected in the northern portion of the La Gloria Vein (in hole PMLP-25-02) are expected to continue further to the North and warrant additional step-out drilling to potentially expand the mineral resource defined on the shallow La Gloria Vein.

"We are delighted to report excellent grades on all four holes at La Preciosa. The intercept grades are significantly higher than the average grades outlined in our current resource, highlighting the potential we aim to capture by using underground mining methods. In addition, the larger widths encountered at both La Gloria and Abundancia were a welcome surprise underscoring that there is still much to learn about this deposit despite the 1,500 drill holes and substantial exploration investment performed by previous operators," said David Wolfin, President and CEO. "We will integrate these results into our ongoing geological model and continue drilling some of the underexplored areas of the named and unnamed veins. We will also combine this information with the data from channel sampling already underway as our mine development plan has us intersecting both veins during the current ramp advancement".

Drilling Results

Assays have been received on four holes totalling 1,100 metres drilled at La Preciosa, intersecting the La Gloria vein in all four holes, the Abundancia vein in three holes, and additional unnamed veins in three of the holes. Assays were processed under Avino's standard QA/QC program, with no indications of bias or contamination detected. Unlike the Avino Mine, the La Preciosa deposit contains no notable copper mineralization, so no copper values are reported.

Details are shown in the table and images below.

Table 1 - Summary Drill Results

Structure	Hole Number	From (m)	To (m)	Intercept Length (m)	True width (m)	Ag (g/t)	Au (g/t)	AgEq¹ (g/t)
La Gloria	PMLP-25-01	84.35	88.5	4.15	3.41	398	0.36	431
	Including	85.05	86.8	1.75	1.44	601	0.36	634
Abundancia	PMLP-25-01	166.35	182.6	16.25	14.80	257	0.38	292
	Including	166.35	171.85	5.5	5.04	594	0.72	660
	Including	169	170	1	0.92	1173	1.00	1,264
Unnamed_1	PMLP-25-02	72.6	75.82	3.22	2.92	282	0.19	299
	Including	73.34	75.1	1.76	1.6	422	0.20	440
La Gloria	PMLP-25-02	99.1	103.3	4.2	3.45	970	0.44	1,010
	Including	99.72	102.65	2.93	2.41	1260	0.52	1,307
	Including	100.3	101.73	1.43	1.17	1936	0.64	1,994
Abundancia	PMLP-25-02	281.6	287	5.4	5.27	112	0.19	129
La Gloria	PMLP-25-03	106.4	116.05	9.65	7.90	1638	1.92	1,812
	Including	113.8	116.05	2.25	1.84	5006	0.61	5,061
	Including	113.8	114.25	0.45	0.37	15352	1.55	15,493
Unnamed_2	PMLP-25-03	134.9	136.8	1.9	1.30	525	1.20	635
Abundancia	PMLP-25-03	288.8	290.05	1.25	1.22	45	0.18	61
La Gloria	PMLP-25-04	183.83	192.5	8.67	6.42	544	0.46	585
	including	190.96	191.85	0.89	0.66	1739	0.74	1,807
Abundanica Splay 1	PMLP-25-04	214.14	214.98	0.84	0.83	125	0.28	150
Unnamed_3	PMLP-25-04	271.84	272.4	0.56	0.51	174	0.33	204
Unnamed_4	PMLP-25-04	274.5	275.2	0.7	0.66	369	0.82	444

1. AgEq in drill results above assumes $3000/oz Au and $33.00/oz Ag, and 100% metallurgical recovery

Figure 1 - Plan View of the La Gloria Vein Showing the Current Drill Hole Locations and the Twin Hole Locations as well as the Projected View of the Decline and Surface Works.

Figure 2 - Longitudinal View of the La Gloria Vein Showing the Current Holes (highlighted) Relative to the Historic Drilling

Figure 3 - Longitudinal View of the Abundancia Vein Showing the Current Holes (highlighted) Relative to the Historic Drilling

Figure 4 - Cross-Section of PMLP25-01, looking North, Showing the Abundancia Vein, the La Gloria vein and the Projections of the Decline Ramp.

Geological Description

La Preciosa deposit is situated on the eastern flank of the Cretaceous to mid-Tertiary Sierra Madre Occidental. The SMO is the largest silicic igneous province in North America, and it stretches from the USA-Mexico border to the latitude of Guadalajara, where the SMO is covered by the late Miocene to Quaternary Trans-Mexican Volcanic Belt.

Mineralization at the La Preciosa is hosted within multiple discrete poly-phase quartz veins, often displaying banded, smoky, drusy, and chalcedonic textures. Also, in each stage, there is variably crustiform banded fracture fill/breccia cement mineralogy. Fluorite, amethyst, a substantial number of barite laths, calcite, and rhodochrosite may also be present, and sulphide mineralization in the form of sphalerite, galena, pyrite, chalcopyrite, acanthite, sparse native silver, and free gold, as well as iron and manganese oxides have been noted in drill core. The principal silver-bearing mineral at the La Preciosa is acanthite-pseudomorphic after argentite or as microcrystalline to amorphous grains.

The main vein system on the Abundancia ridge consists of dominantly north-south-striking and westward-dipping veins plus east-southeast -striking, south-dipping crosscutting veins. The Abundancia vein system has been traced on the surface for over 1.5 km. In the eastern part of the Project, a north- to northwest-striking, shallow west-dipping vein system with associated hanging wall veining and alteration is exposed in a series of hills. This vein system is referred to as the Martha vein and has been traced by drilling for over 2.5 km along the strike.

The mineralization in the area occurs in veins, veinlets, and stockwork. These veins average in true width less than 15 m (Martha Vein) and consist of several stages of banded crustiform to colloform, quartz (and cryptocrystalline quartz at shallow depths), adularia, barite, and typically later carbonates (both calcite and rhodochrosite); illite commonly replaces the adularia. There are variable amounts of pyrite, sphalerite, and galena plus argentite, and variable amounts of tetrahedrite - tennantite, freibergite, and Ag sulfosalt.

There are steep-dipping veins in the west, such as the La Gloria vein. These steep veins can be considered as a mineralized zone or lode of stock work, silicification, breccias, veins, vein breccias, veinlets, and a general mix of multiple styles of mineralization.

The mineralization displays characteristics typical of epithermal veins in Mexico, particularly of the Ag-rich variety. Quartz veins are accompanied by adularia, barite, calcite, and rhodochrosite of variable timing, as well as acanthite, freibergite, Ag sulfosalts and minor electrum, plus variable amounts of pyrite, honey-coloured sphalerite, tennantite/tetrahedrite, chalcopyrite and galena, and supergene Fe and Mn oxides; the hypogene minerals are characteristic of intermediate-sulphidation deposits in Mexico. Mineralization is believed to be Tertiary in age, and both the Lower Volcanic Supergroup (LVS) and Upper Volcanic Supergroup (UVS) are mineralized, but the overlying basalts are recent and not mineralized.

Sampling and Assay Methods

Following detailed geological and geotechnical logging, selected drill core areas were cut in half. One half of the core was submitted to the SGS Laboratory facility in Durango, Mexico, and the other half was retained on-site for verification and reference. Gold is assayed by fire assay with an AA finish. Any samples exceeding 3.0 gold g/t are re-assayed and followed by a gravimetric finish. Multi-element analyses are also completed for each sample by SGS ICP14B methods. Silver is fire assayed with a gravimetric finish for samples assaying over 100 g/t. Avino uses a series of standard reference materials, blank reference materials, and duplicates as part of their QA/QC program during assaying.

Qualified Person(s)

Avino's projects in Durango, Mexico are under the geoscientific oversight of Michael F. O'Brien, P.Geo., Senior Principal Consultant, Red Pennant Communications, and under the supervision of Peter Latta, P.Eng, Avino's VP, Technical Services, who are both qualified persons within the context of NI 43-101. Both have reviewed and approved the technical data in this news release.

About Avino

Avino is a silver producer from its wholly owned Avino Mine near Durango, Mexico. The Company's silver, gold and copper production remains unhedged. The Company intends to maintain long term sustainable and profitable mining operations to reward shareholders and the community alike through our growth at the historic Avino Property and the strategic acquisition of the adjacent La Preciosa which was finalized in Q1 2022. Early in 2024, the pre-feasibility Study on the Oxide Tailings Project was completed. This study is a key milestone in our growth trajectory. As part of Avino's commitment to adopting sustainable practices, we have been operating a dry-stack tailings facility for more than two years with excellent results. We are committed to managing all business activities in a safe, environmentally responsible, and cost-effective manner, while contributing to the well-being of the communities in which we operate. We encourage you to connect with us on X (formerly Twitter) at @Avino_ASM and on LinkedIn at Avino Silver & Gold Mines. To view the Avino Mine VRIFY tour, please click here.

Note: All Avino Silver & Gold Mines Ltd. drill results are detailed in separate news releases and these releases are available on our website at www.avino.com and on our SEDAR profile at www.sedar+.ca.

For Further Information, Please Contact:

Investor Relations
Tel: 604-682-3701
Email: IR@avino.com

This news release contains "forward-looking information" and "forward-looking statements" (together, the "forward looking statements") within the meaning of applicable securities laws and the United States Private Securities Litigation Reform Act of 1995, including the mineral resource estimate for the Company's Avino Property, including La Preciosa, located near Durango in west-central Mexico (the "Avino Property") with an effective date of October 16, 2023 and can be viewed within Avino's latest technical report dated February 5, 2024 for the Pre-feasibility Study and references to to Measured, Indicated Resources, and Proven and Probable Mineral Reserves referred to in this press release. This information and these statements, referred to herein as "forward-looking statements" are made as of the date of this document. Forward-looking statements relate to future events or future performance and reflect current estimates, predictions, expectations or beliefs regarding future events and include, but are not limited to, statements with respect to: (i) the estimated amount and grade of mineral reserves and mineral resources, including the cut-off grade; (ii) estimates of the capital costs of constructing mine facilities and bringing a mine into production, of operating the mine, of sustaining capital, of strip ratios and the duration of financing payback periods; (iii) the estimated amount of future production, both ore processed and metal recovered and recovery rates; (iv) estimates of operating costs, life of mine costs, net cash flow, net present value (NPV) and economic returns from an operating mine; and (v) the completion of the full Technical Report, including a Preliminary Economic Assessment, and its timing. Any statements that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives or future events or performance (often, but not always, using words or phrases such as "expects", "anticipates", "plans", "projects", "estimates", "envisages", "assumes", "intends", "strategy", "goals", "objectives" or variations thereof or stating that certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved, or the negative of any of these terms and similar expressions) are not statements of historical fact and may be forward-looking statements. These forward-looking statements are made as of the date of this news release and the dates of technical reports, as applicable. Readers are cautioned not to place undue reliance on forward-looking statements, as there can be no assurance that the future circumstances, outcomes or results anticipated in or implied by such forward-looking statements will occur or that plans, intentions or expectations upon which the forward-looking statements are based will occur. While we have based these forward-looking statements on our expectations about future events at the date that such statements were prepared, the statements are not a guarantee that such future events will occur and are subject to risks, uncertainties, assumptions and other factors which could cause events or outcomes to differ materially from those expressed or implied by such forward-looking statements.

Cautionary note to U.S. Investors concerning estimates of Mineral Reserves and Mineral Resources

All reserve and resource estimates reported by Avino were estimated in accordance with the Canadian National Instrument 43-101 and the Canadian Institute of Mining, Metallurgy and Petroleum ("CIM") Definition Standards. The U.S. Securities and Exchange Commission ("SEC") now recognizes estimates of "measured mineral resources," "indicated mineral resources" and "inferred mineral resources" and uses new definitions of "proven mineral reserves" and "probable mineral reserves" that are substantially similar to the corresponding CIM Definition Standards. However, the CIM Definition Standards differ from the requirements applicable to US domestic issuers. US investors are cautioned not to assume that any "measured mineral resources," "indicated mineral resources," or "inferred mineral resources" that the Issuer reports are or will be economically or legally mineable. Further, "inferred mineral resources" are that part of a mineral resource for which quantity and grade are estimated on the basis of limited geologic evidence and sampling. Mineral resources which are not mineral reserves do not have demonstrated economic viability.

Neither TSX nor its Regulation Services Provider (as that term is defined in the policies of the TSX) accepts responsibility for the adequacy or accuracy of this release.

SOURCE: Avino Silver & Gold Mines Ltd.

View the original press release on ACCESS Newswire

FAQ

What were the key drilling results from Avino's (ASM) La Preciosa project in August 2025?

The key result was 1,638 g/t silver and 1.92 g/t gold over 7.90 metres, including an exceptional intersection of 15,352 g/t silver and 1.55 g/t gold over 0.37 metres in Hole PMLP 25-03.

How many drill holes did Avino (ASM) complete at La Preciosa and what veins were intersected?

Avino completed four drill holes totaling 1,100 metres, intersecting the La Gloria vein in all four holes and the Abundancia vein in three holes.

What is the geological structure of Avino's (ASM) La Preciosa deposit?

La Preciosa is hosted within multiple discrete poly-phase quartz veins with banded, smoky, drusy, and chalcedonic textures. The main silver-bearing mineral is acanthite, with mineralization typical of epithermal veins in Mexico.

What are the implications of ASM's La Preciosa drilling results for the resource model?

The results exceeded grade expectations and verified the current vein-based resource model geometry, with potential for resource expansion identified in the northern portion of the La Gloria Vein.

What is the significance of the 'pinch and swell' geometry mentioned in ASM's drilling results?

The 'pinch and swell' geometry indicates significant grade and thickness variations over short distances, which was expected and explains the variation in grades and thicknesses within relatively short distances of under 10 metres.