AbraSilver Drilling at Diablillos Intersects 8.5 Metres at 13.81 g/t Gold at Oculto East Separate Hole Intersects Broad Zone of 180 m Grading 0.65 g/t Gold
AbraSilver Drilling at Diablillos Intersects 8.5
Metres at 13.81 g/t Gold at Oculto East
Separate Hole Intersects Broad Zone of 180 m Grading 0.65 g/t
Gold
Toronto, Ontario--(Newsfile Corp. - October 28, 2025) -
AbraSilver Resource Corp. (TSX: ABRA)
(OTCQX: ABBRF)
("AbraSilver" or the "Company") is pleased to announce new assay results from five
drill holes from the ongoing Phase V exploration program at its wholly-owned Diablillos project in
Argentina (the "Project").
These results continue to expand oxide-hosted gold mineralization to the east
of the Oculto deposit, extending the high-grade gold zone and highlighting the continued strong
exploration upside potential across the Diablillos system.
Highlight Drill Results –
Widths are reported as drilled; true widths are not yet known.
At Oculto East, numerous broad zones of gold and silver mineralization were intercepted,
including:
DDH 25-073:
10.0 metres ("m") grading 59 g/t silver
(from 117 m downhole) &
20.0 m
grading 0.66 g/t gold
(223 m downhole)
DDH 25-074:
31.0 m grading 0.59 g/t gold
(from 255 m)
DDH 25-075A:
73.0 m grading 0.55 g/t gold
(from 277 m),
including 13.5 m at 0.83 g/t
gold
&
16.5 m grading 0.75 g/t gold
DDH 25-076:
12 m grading 62 g/t silver
(from 128 m downhole) &
a very broad, well-
mineralized intercept of 180.0 m grading 0.65 g/t gold
(from 170 m), including
15.0 m at
1.36 g/t gold
DDH 25-077:
A high-grade interval of 13.81 g/t gold over 8.5 m
from 317 m
,
and a
separate interval of
44.0 m at 0.65 g/t gold
from 368 m
John Miniotis, President and CEO, commented, "Drilling at Oculto East continues to deliver impressive
results with wide, high-grade gold intercepts. The continued expansion of this zone well beyond the
current conceptual open pit demonstrates the strong growth potential of Diablillos and positions us to
continue unlocking significant value through ongoing exploration and development."
Figure 1 – Plan View of Drill Results
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/11792/272103_6e58763c443ed887_001full.jpg
Dave O'Connor, Chief Geologist, commented, "Drilling at Oculto East continues to confirm broad, high-
grade gold mineralization extending well beyond the eastern margin of the conceptual open pit. The
consistency of these strong intercepts points to a large, continuous mineralized envelope with significant
potential for further 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)
To
(m)
Type
Interval
(m)
Ag
g/t
Au
g/t
DDH-25-073
Oculto East
117.0
127.0
Oxides
10.0
59.0
-
133.0
139.0
Oxides
6.0
36.9
0.24
223.0
243.0
Oxides
20.0
13.3
0.66
256.0
266.0
Oxides
10.0
24.7
0.78
313.5
315.5
Oxides
2.0
-
0.86
327.5
330.0
Oxides
2.5
4.2
1.41
DDH-25-074
Oculto East
224.0
225.0
Oxides
1.0
-
1.30
233.0
243.0
Oxides
10.0
-
0.61
255.0
286.0
Oxides
31.0
-
0.59
DDH-25-075A
Oculto East
148.0
168.0
Oxides
20.0
3.5
0.40
187.0
189.0
Oxides
2.0
3.5
1.05
277.0
350.0
Oxides
73.0
3.3
0.55
Including
286.0
299.5
Oxides
13.5
4.0
0.83
Including
313.0
329.5
Oxides
16.5
2.6
0.75
DDH-25-076
Oculto East
121.0
124.0
Oxides
3.0
83.7
0.17
128.0
140.0
Oxides
12.0
62.1
0.17
150.0
156.0
Oxides
6.0
10.3
1.12
161.0
162.0
Oxides
1.0
5.5
0.99
170.0
350.0
Oxides
180.0
10.8
0.65
Including
297.0
312.0
Oxides
15.0
25.3
1.36
DDH-25-077
Oculto East
317.0
337.0
Oxides
20.0
6.2
0.27
337.0
345.5
Oxides
8.5
14.3
13.81
368.0
412.0
Oxides
44.0
3.6
0.65
425.0
428.0
Oxides
3.0
10.1
0.77
435.0
450.0
Mixed
15.0
13.3
0.62
446.5
448.0
Sulphides
1.5
8.9
2.81
Note: All results in this news release are rounded. Assays are uncut & undiluted. Widths are drilled widths, not true widths.
True widths are
unknown.
Additional Details on Drill Results – Oculto East
Several holes drilled at Oculto East continue to demonstrate broad, continuous intervals of oxide gold
mineralization extending beyond the eastern margin of the current conceptual open pit. The stand-out
intercept was returned in hole DDH 25-077 with
a high-grade interval of 8.5 m grading 13.81 g/t gold
and 14.3 g/t silver
.
As seen in Figure 2 below, this intercept occurs along the same mineralized trend
as hole
DDH 25-024
, which previously returned
31.0 m grading 9.96 g/t gold and 16.2 g/t silver
,
highlighting the strong continuity of high-grade gold mineralization at Oculto East.
Additional assay results from nearby holes are pending, with drilling ongoing to further define the
continuity and extent of this expanding high-grade gold zone within the larger mineralized system.
Figure 2 – Section Through Latest Drill Holes – at Oculto East Looking Northeast
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/11792/272103_6e58763c443ed887_002full.jpg
Note: Widths are drilled widths, not true widths.
True widths are unknown.
Exploration Update
In parallel with the ongoing oxide-focused drilling, exploration is underway at the porphyry complex
located approximately 4 kilometres northeast of Oculto. The Company has completed a deep drill hole at
the Cerro Blanco target and four shallow holes at the Cerro Viejo target, with an additional deep drill hole
underway at Cerro Viejo. These holes were designed to evaluate the potential for a large-scale
mineralized system at depth. In addition, a deep drill hole is currently underway at Oculto East to test for
potential porphyry-style mineralization beneath the high-grade gold zone, marking an important step
toward assessing the deeper potential across the broader Diablillos system.
All assay results for these
deeper holes are expected to be received before year-end.
Collar Data
Hole Number
UTM Coordinates
Elevation
Azimuth
Dip
Depth (m)
Area
DDH 25-073
720644
7199602
4,317
180
-70
350
Oculto East
DDH 25-074
720926
7199724
4,362
180
-60
290
Oculto East
DDH 25-075A
721099
7199691
4,427
175
-70
350
Oculto East
DDH 25-076
721007
7199649
4,413
175
-60
350
Oculto East
DDH 25-077
720877
7199433
4,432
315
-75
450
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)
Ag
(g/t)
Au
(g/t)
AgEq
(g/t)
Contained
Ag
(000OzAg)
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
56
0.63
114
84,430
948
170,592
Measured &
73,129
79
0.66
139
185,994
1,553
327,078
Indicated
Inferred
9,693
34
0.57
86
10,616
176
26,647
Heap Leach
Oxides
Measured
6,673
16
0.14
25
3,486
30
5,342
Indicated
24,102
12
0.17
23
9,163
133
17,506
Measured &
30,774
13
0.16
23
12,649
162
22,848
Indicated
Inferred
10,024
9
0.20
21
2,811
64
6,850
Total
Oxides
Measured
33,218
98
0.59
152
105,050
634
161,829
Indicated
70,686
41
0.48
83
93,593
1,081
188,098
Measured &
103,904
59
0.51
105
198,643
1,715
349,927
Indicated
Inferred
19,628
21
0.38
53
13,427
241
33,496
Footnotes for Tank Leach Resource:
1
.
Mineral Resources are not Mineral Reserves and have not demonstrated economic viability.
2
.
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).
3
.
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.
4
.
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.
5
.
The constraining open pit optimization parameters used were US $1.94/t mining cost, US $22.96/t processing cost, US $3.32/t G&A cost, and
average 51-degree open pit slopes.
6
.
The MRE has been categorized in accordance with the CIM Definition Standards (CIM, 2014).
7
.
A Net Value per block [NVB] calculation was used to constrain the Mineral Resource, determine the "Benefits = Income-Cost", where,
Income = [(Au Selling Price (US$/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$/t) + [Royalty Cost (%) x Income]
8
.
The Mineral Resource is sub-horizontal with sub-vertical feeders and a reasonable prospect for eventual economic extraction by open pit
and tank leach processing methods.
9
.
In-situ bulk density were assigned to each model domain, according to samples averages for each lithology domain, separated by alteration
zones and subset by oxidation.
10
.
All tonnages reported are dry metric tonnes and ounces of contained gold are troy ounces.
11
.
Mining recovery and dilution factors have not been applied to the Mineral Resource estimates.
12
.
The Mineral Resource was estimated by Luis Rodrigo Peralta, B.Sc., FAusIMM CP (Geo), Independent Qualified Person under NI 43-101.
13
.
Mr. Peralta is not aware of any environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues that could
materially affect the potential development of the Mineral Resource.
14
.
All figures are rounded to reflect the relative accuracy of the estimates. Minor discrepancies may occur due to rounding to appropriate
significant figures.
Footnotes for Heap Leach Resource:
1
.
Mineral Resources are not Mineral Reserves and have not demonstrated economic viability.
2
.
The formula for calculating AgEq is as follows: Silver Eq Oz = Silver Oz + Gold Oz x (Gold Price/Silver Price) x (Gold Recovery/Silver
Recovery).
3
.
The Mineral Resource model was populated using Ordinary Kriging grade estimation within a three-dimensional block model and mineralized
zones defined by wireframed solids, which are a combination of lithology and alteration domains.
The 1m composite grades were capped
where appropriate.
4
.
The Mineral Resource is reported inside a conceptual Whittle open pit shell derived using US$ 27.50/oz Ag price, US $2,400/oz Au price,
80% process recovery for Ag, and 58% process recovery for Au.
5
.
The constraining open pit optimization parameters used and overall operational cost of US $11.31/t.
6
.
The MRE has been categorized in accordance with the CIM Definition Standards (CIM, 2014).
7
.
A Net Value per block [NVB] calculation was used to constrain the Mineral Resource, determine the "Benefits = Income-Cost", where,
Income = [(Au Selling Price (US$/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]
8
.
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.
9
.
All tonnages reported are dry metric tonnes and ounces of contained gold are troy ounces.
10
.
Mining recovery and dilution factors have not been applied to the Mineral Resource estimates.
11
.
The Mineral Resource was estimated by Mr. Peralta, B.Sc., FAusIMM CP (Geo), Independent Qualified Person under NI 43-101.
12
.
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.
13
.
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
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.
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