ABRA.TO · 2025-09-30 12:00:00

AbraSilver Drilling at Diablillos Intercepts Wide Gold Intervals at Oculto East and Broad Silver Intercepts at JAC Oculto East Returns 140 m at 0.57 g/t Gold & JAC Returns 32 m at 100 g/t Silver

Drill Results

AbraSilver Drilling at Diablillos Intercepts

Wide Gold Intervals at Oculto East and Broad

Silver Intercepts at JAC

Oculto East Returns 140 m at 0.57 g/t Gold & JAC Returns 32

m at 100 g/t Silver

Toronto, Ontario--(Newsfile Corp. - September 30, 2025) -

AbraSilver Resource Corp. (TSX: ABRA)

(OTCQX: ABBRF)

("AbraSilver" or the "Company") is pleased to announce new assay results from six

drill holes from the ongoing Phase V exploration program at its wholly-owned Diablillos project in

Argentina (the "Project").

These drill holes continue to expand oxide-hosted gold mineralization to the

east of the Oculto deposit and oxide silver mineralization within the JAC zone, highlighting the continued

strong exploration upside potential across the Diablillos system.

Highlight Drill Results -

Widths are reported as drilled lengths; true widths are not yet known.

Oculto East:

Numerous broad zones of continuous gold mineralization intercepted, including:

DDH 25-066:

1.0 metre ("m") with bonanza grades of 108.9 g/t gold

from 288 m

downhole, as well

as 18.0 m at 0.97 g/t gold

from 353 m

DDH 25-069:

24.0 m grading 1.02 g/t gold

from 243 m

DDH 25-071:

33.0 m grading 0.42 g/t gold

from 69 m

DDH 25-072:

140.0 m grading 0.57 g/t gold

from 262 m, including

8.0 m at 2.60 g/t gold

from 338 m

JAC:

Strong near-surface silver mineralization continues to expand the Mineral Resource

potential, including:

DDH 25-053:

29.0 m at 65 g/t silver

from 85 m, including

7.0 m at 108 g/t silver

DDH 25-058:

32.0 m at 100 g/t silver

from 58 m, including

2.0 m at 400 g/t silver

John Miniotis, President and CEO, commented, "These latest drill results highlight the strong continuity

of wide gold zones at Oculto East, together with additional near-surface silver mineralization at JAC.

The

potential to expand both gold and silver resources well beyond the current Mineral Resource conceptual

open pit further demonstrates the scale of Diablillos and firmly positions us to continue delivering value

through ongoing exploration and development."

Dave O'Connor, Chief Geologist, commented, "Drilling at Oculto East continues to confirm broad

intervals of gold mineralization to the east, while results at JAC reinforce the presence of thick,

continuous silver mineralization to the west. Together, these results highlight the strength and continuity of

the Diablillos system and its potential for significant additional Mineral Resource expansion."

Table 1 - Summary of Key Drill Intercepts

Intercepts greater than 25 gram-metres gold or 2,000 gram-metres silver shown in bolded text

Drill Hole

Area

From

)

(m)

Type

Interval (m)

g/t

DDH-25-053

JAC

85.0

114.0

Oxides

29.0

64.6

Including

94.0

101.0

Oxides

7.0

107.7

123.0

143.0

Oxides

20.0

41.1

DDH-25-058

JAC

58.0

90.0

Oxides

32.0

99.5

Including

69.0

71.0

Oxides

2.0

400.0

92.0

131.0

Oxides

39.0

35.3

DDH-25-066

Oculto East

148.0

151.0

Oxides

3.0

0.75

161.0

163.5

Oxides

2.5

0.80

196.5

202.5

Oxides

6.0

2.23

228.0

230.0

Oxides

2.0

77.5

234.0

253.5

Oxides

19.5

49.6

0.41

265.0

270.0

Oxides

5.0

27.9

0.51

274.0

276.0

Oxides

2.0

37.6

0.87

288.0

289.0

Oxides

1.0

61.8

108.9

295.0

299.0

Oxides

4.0

18.4

0.90

353.0

371.0

Oxides

18.0

8.6

0.97

402.0

404.0

Oxides

2.0

0.77

DDH-25-069

Oculto East

234.0

235.0

Oxides

1.0

6.8

1.32

242.0

266.0

Oxides

24.0

5.3

1.02

315.0

316.0

Oxides

1.0

4.6

1.08

DDH-25-071

Oculto East

69.0

101.0

Oxides

33.0

0.42

115.0

116.0

Oxides

1.0

11.8

0.86

127.7

129.0

Oxides

1.3

10.7

1.02

167.0

168.0

Oxides

1.0

0.91

DDH-25-072

Oculto East

166.0

183.0

Oxides

17.0

87.3

0.15

211.0

213.0

Oxides

2.0

0.57

230.0

234.0

Oxides

4.0

39.7

0.24

244.0

247.0

Oxides

3.0

1.15

262.0

402.0

Oxides

140.0

8.3

0.57

Including

338.0

346.0

Oxides

8.0

17.6

2.60

Note: All results in this news release are rounded. Assays are uncut & undiluted. Widths are drilled widths, not true widths.

True widths are

unknown.

Figure 1 - Plan View of Drill Results

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/11792/268423_abrasilverimage1.jpg

Additional Details on Drill Results - Oculto East and JAC

At Oculto East, drilling continues to demonstrate broad, continuous intervals of oxide gold mineralization

extending beyond the eastern margin of the current conceptual open pit.

Hole DDH 25-072 returned

140.0 m grading 0.57 g/t Au and 8.3 g/t Ag

, including a higher-grade interval of

8.0 m at 2.60 g/t Au

while hole

DDH 25-066

intersected multiple zones of gold and silver mineralization including

1.0 m at

108.9 g/t Au and 61.8 g/t Ag

. Other results, such as

24.0 m grading 1.02 g/t Au in hole DDH 25-069

further highlight the strong continuity and scale of gold mineralization in this area.

Mineralization depicted in Figures 2 and 3 below appears to be within the conceptual pit boundary but is

actually situated on the margins.

This highlights the strong potential for upgrading mineralization along

the pit boundaries to the Measured category and enhancing overall project economics.

Figure 2 - Section Through Latest Drill Holes - at Oculto East Looking East

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/11792/268423_abrasilverimage2.jpg

Note: Widths are drilled widths, not true widths.

True widths are unknown.

At the JAC zone, drilling shows that shallow silver mineralization extends beyond the western margin of

the conceptual open pit, likely following a structure perpendicular to the main trend.

Hole DDH 25-053

intersected 29.0 m grading 65 g/t Ag

, including

7.0 m at 108 g/t Ag

, and hole

DDH 25-058

intersected 32.0 m at 100 g/t Ag

, including

2.0 m at 400 g/t Ag

. Silver mineralization at JAC remains

open to the south and west with potential to extend both the tank and heap leach Mineral Resources in

these directions.

Figure 3 - Section Through Latest Drill Holes - at JAC Looking East

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/11792/268423_abrasilverimage3.jpg

Table 2 - Collar Data

Hole Number

UTM Coordinates

Elevation

Azimuth

Dip

Depth (m)

Area

DDH 25-053

719282

7198746

4,138

-60

146

JAC

DDH 25-058

719210

7198763

4,135

-60

150

JAC

DDH 25-066

720810

7199498

4,395

315

-60

419

Oculto East

DDH 25-069

720777

7199776

4,317

180

-60

329.5

Oculto East

DDH 25-071

720923

7199790

4,345

180

-60

251

Oculto East

DDH 25-072

720757

7199406

4,394

340

-60

419

Oculto East

About Diablillos

The Diablillos property is located within the Puna region of Argentina, in the southern part of Salta

Province along the border with Catamarca Province, approximately 160 km southwest of the city of Salta

and 375 km northwest of the city of Catamarca. AbraSilver acquired the property in 2016, which

comprises 15 contiguous and overlapping mineral concessions with excellent year-round road access.

Exploration to date has outlined multiple occurrences of silver-gold oxide mineralization at Oculto, JAC,

Laderas, and Fantasma, located within a 500 m to 1.5 km distance surrounding the Oculto/JAC

epicentre. To date, over 150,000 metres have been drilled on the property, which continues to

demonstrate the strong growth potential of shallow, oxide-hosted silver and gold resources.

In addition, a

large porphyry complex is centered approximately 4 km northeast of Oculto which includes outcropping

porphyry intrusions within a major zone of alteration and associated gold rich epithermal mineralization.

Comparatively nearby examples of high sulphidation epithermal deposits include: La Coipa (Chile);

Yanacocha (Peru); El Indio (Chile); Lagunas Nortes/Alto Chicama (Peru) Veladero (Argentina); and Filo

del Sol (Argentina). The most recent Mineral Resource estimate for Diablillos is shown in Table 3:

Table 3 - Diablillos Mineral Resource Estimate - As of July 21, 2025

Zone

Category

Tonnes

(000 t)

(g/t)

AgEq

(g/t)

Contained Ag

(000 Oz Ag)

Contained Au

(000 Oz Ag)

Contained

AgEq

(000 Oz Ag)

Tank Leach

Oxides

Measured

26,545

119

0.71

183

101,564

604

156,487

Indicated

46,584

0.63

114

84,430

948

170,592

Measured &

73,129

0.66

139

185,994

1,553

327,078

Indicated

Inferred

9,693

0.57

10,616

176

26,647

Heap Leach

Oxides

Measured

6,673

0.14

3,486

5,342

Indicated

24,102

0.17

9,163

133

17,506

Measured &

30,774

0.16

12,649

162

22,848

Indicated

Inferred

10,024

0.20

2,811

6,850

Total

Oxides

Measured

33,218

0.59

152

105,050

634

161,829

Indicated

70,686

0.48

93,593

1,081

188,098

Measured &

103,904

0.51

105

198,643

1,715

349,927

Indicated

Inferred

19,628

0.38

13,427

241

33,496

Footnotes for Tank Leach Resource:

Mineral Resources are not Mineral Reserves and have not demonstrated economic viability.

The formula for calculating AgEq is as follows: Silver Eq Oz = Silver Oz + Gold Oz x (Gold Price/Silver Price) x (Gold Recovery/Silver

Recovery).

The Mineral Resource model was populated using Ordinary Kriging grade estimation within a three-dimensional block model and mineralized

zones defined by wireframed solids, which are a combination of lithology and alteration domains.

The 1m composite grades were capped

where appropriate.

The Mineral Resource is reported inside a conceptual Whittle open pit shell derived using US$ 27.50/oz Ag price, US $2,400/oz Au price,

83% process recovery for Ag, and 87% process recovery for Au.

The constraining open pit optimization parameters used were US $1.94/t mining cost, US $22.96/t processing cost, US $3.32/t G&A cost, and

average 51-degree open pit slopes.

The MRE has been categorized in accordance with the CIM Definition Standards (CIM, 2014).

A Net Value per block [NVB] calculation was used to constrain the Mineral Resource, determine the "Benefits = Income-Cost", where,

Income = [(Au Selling Price (US$/oz) - Au Selling Cost (USD/Oz)) x (Au grade (g/t)/31.1035)) x Au Recovery (%)] + [(Ag Selling Price

(US$/oz) - Ag Selling Cost (USD/Oz)) x (Ag grade (g/t)/31.1035)) x Ag Recovery (%)] and Cost = Mining Cost (US$/t) + Process Cost (US$/t)

+ Transport Cost (US$/t) + G&A Cost (US$/t) + [Royalty Cost (%) x Income]

The Mineral Resource is sub-horizontal with sub-vertical feeders and a reasonable prospect for eventual economic extraction by open pit

and tank leach processing methods.

In-situ bulk density were assigned to each model domain, according to samples averages for each lithology domain, separated by alteration

zones and subset by oxidation.

All tonnages reported are dry metric tonnes and ounces of contained gold are troy ounces.

Mining recovery and dilution factors have not been applied to the Mineral Resource estimates.

The Mineral Resource was estimated by Luis Rodrigo Peralta, B.Sc., FAusIMM CP (Geo), Independent Qualified Person under NI 43-101.

Mr. Peralta is not aware of any environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues that could

materially affect the potential development of the Mineral Resource.

All figures are rounded to reflect the relative accuracy of the estimates. Minor discrepancies may occur due to rounding to appropriate

significant figures.

Footnotes for Heap Leach Resource:

Mineral Resources are not Mineral Reserves and have not demonstrated economic viability.

The formula for calculating AgEq is as follows: Silver Eq Oz = Silver Oz + Gold Oz x (Gold Price/Silver Price) x (Gold Recovery/Silver

Recovery).

The Mineral Resource model was populated using Ordinary Kriging grade estimation within a three-dimensional block model and mineralized

zones defined by wireframed solids, which are a combination of lithology and alteration domains.

The 1m composite grades were capped

where appropriate.

The Mineral Resource is reported inside a conceptual Whittle open pit shell derived using US$ 27.50/oz Ag price, US $2,400/oz Au price,

80% process recovery for Ag, and 58% process recovery for Au.

The constraining open pit optimization parameters used and overall operational cost of US $11.31/t.

The MRE has been categorized in accordance with the CIM Definition Standards (CIM, 2014).

A Net Value per block [NVB] calculation was used to constrain the Mineral Resource, determine the "Benefits = Income-Cost", where,

Income = [(Au Selling Price (US$/oz) - Au Selling Cost (USD/Oz)) x (Au grade (g/t)/31.1035)) x Au Recovery (%)] + [(Ag Selling Price

(US$/oz) - Ag Selling Cost (USD/Oz)) x (Ag grade (g/t)/31.1035)) x Ag Recovery (%)] and Cost = Mining Cost (US$/t) + Process Cost (US$/t)

+ Transport Cost (US$/t) + G&A Cost (US$/t) + [Royalty Cost (%) x Income]

In-situ bulk density were assigned to each model domain, according to samples averages for each lithology domain, separated by alteration

zones and subset by oxidation.

All tonnages reported are dry metric tonnes and ounces of contained gold are troy ounces.

Mining recovery and dilution factors have not been applied to the Mineral Resource estimates.

The Mineral Resource was estimated by Mr. Peralta, B.Sc., FAusIMM CP (Geo), Independent Qualified Person under NI 43-101.

Mr. Peralta is not aware of any environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues that could

materially affect the potential development of the Mineral Resource.

All figures are rounded to reflect the relative accuracy of the estimates. Minor discrepancies may occur due to rounding to appropriate

significant figures.

QA/QC and Core Sampling Protocols

AbraSilver applies industry standard exploration methodologies and techniques, and all drill core

samples are collected under the supervision of the Company's geologists in accordance with industry

best practices. Drill core is transported from the drill platform to the logging facility where drill data is

compared and verified with the core in the trays. Thereafter, it is logged, photographed, and split by

diamond saw prior to being sampled. Samples are then bagged, and quality control materials are

inserted at regular intervals at site; these include blanks and certified reference materials as well as

duplicate core samples which are collected in order to assess sampling precision and reproducibility.

Groups of samples are then placed in large bags which are sealed with numbered tags in order to

maintain a chain-of-custody during the transport of the samples from the project site to the laboratory.

All samples are received by the ASA (Alex Stewart Argentina) preparation laboratory in Salta, where

they are prepared, then the pulp sachet is directly dispatched to its facility in Mendoza, Argentina, where

they are analyzed. All samples are analyzed using a multi-element technique consisting of a four-acid

digestion followed by ICP/AES detection, and gold is analyzed by 50g Fire Assay with an AAS finish.

Silver results greater than 100g/t are re-analyzed using four acid digestion with an ore grade AAS finish.

Qualified Persons

David O'Connor P.Geo., Chief Geologist for AbraSilver, is the Qualified Person as defined by National

Instrument 43-101 Standards of Disclosure for Mineral Projects, and he has reviewed and approved the

scientific and technical information in this news release.

About AbraSilver

AbraSilver is an advanced-stage exploration company focused on rapidly advancing its 100%-owned

Diablillos silver-gold project in the mining-friendly Salta province of Argentina.

The current Measured and

Indicated Mineral Resource estimate for Diablillos (tank leach-only) consists of 73.1 Mt grading 79 g/t Ag

and 0.66 g/t Au, containing approximately 186Moz silver and 1.6Moz gold, with significant further upside

potential based on recent exploration drilling. The Company is led by an experienced management team

and has long-term supportive shareholders. In addition, the Company has an earn-in option and joint

venture agreement with Teck on the La Coipita project, located in the San Juan province of Argentina.

AbraSilver is listed on the Toronto Stock Exchange under the symbol "ABRA" and in the U.S. on the

OTCQX under the symbol "ABBRF."

For further information please visit the AbraSilver Resource website at

www.abrasilver.com

, our LinkedIn

page at

AbraSilver Resource Corp.

, and follow us on X at

www.x.com/abrasilver

Alternatively, please contact:

John Miniotis, President and CEO

[email protected]

Tel: +1 416-306-8334

Cautionary Statements

This news release includes certain "forward-looking statements" under applicable Canadian securities

legislation. Forward-looking statements are necessarily based upon a number of estimates and

assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties,

and other factors which may cause the actual results and future events to differ materially from those

expressed or implied by such forward-looking statements. All statements that address future plans,

activities, events or developments that the Company believes, expects or anticipates will or may occur

are forward-looking information. There can be no assurance that such statements will prove to be

accurate, as actual results and future events could differ materially from those anticipated in such

statements. Accordingly, readers should not place undue reliance on forward-looking statements. When

considering this forward-looking information, readers should keep in mind the risk factors and other

cautionary statements in the Company's disclosure documents filed with the applicable Canadian

securities regulatory authorities on SEDAR+ at

www.sedarplus.ca

The risk factors and other factors

noted in the disclosure documents could cause actual events or results to differ materially from those

described in any forward-looking information. The Company disclaims any intention or obligation to

update or revise any forward-looking statements, whether as a result of new information, future events or

otherwise, except as required by law.

Neither the 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 news release.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/268423

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