REG - Orosur Mining Inc - Pepas West Expanding

Orosur MiningAnnouncement

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RNS Number : 0614E  Orosur Mining Inc  13 May 2026

 

 

 

Pepas West Expanding

 

·    Ongoing drilling at Pepas West continues to show positive results:

o PEP085, 16.1m @ 2.68g/t Au

o PEP087, 21.7m @ 1.42g/t Au

o PEP088, 9.8m @ 1.41g/t Au

o PEP090, 23.45m @ 2.98g/t Au

·    Hole PEP090 stepped out 30m north of previous holes, demonstrating
extension potential.

·    Rig currently drilling south of Pepas, will return to Pepas West in
several weeks.

·    Hole MAP-106 at APTA now in the target zone.

 

London, May 13th, 2026. Orosur Mining Inc. ("Orosur" or the "Company")
(TSXV/AIM:OMI), is pleased to announce an update on the progress of
exploration activities at the Company's exploration project at Anzá in
Colombia ("Anzá" or the "Project").

 

Anzá - Colombia

The Anzá Project in Colombia comprises a number of granted exploration titles
and applications totalling roughly 330km(2), within the Mid-Cauca gold belt,
west of the city of Medellín.

 

These titles and applications are owned by two Colombian companies, Minera
Anzá, and Minera Monte Aguila, both wholly owned subsidiaries of the Company.
The latter of these was acquired by Orosur in November 2024 from the Company's
previous JV partners, Newmont Mining and Agnico Eagle Mines. Orosur thus owns
100% of the Anzá Project.

 

Since acquiring 100% control, the Company has focussed its attention on three
prospects:

·    Pepas - a shallow, high-grade ore body of gold mineralisation for
which the Company has calculated a Mineral Resource Estimate ("MRE"),
announced February 10(th) 2026.

·    APTA - a high-grade body of gold mineralisation that has to date seen
almost  39,000m of historical drilling, and at which drilling has recently
recommenced.

·    El Cedro - a cluster of gold porphyry intrusions in the south of the
Project area that are currently subject to mapping and sampling programs, with
a view to potentially being drilled as soon as targets can be finalised and
logistics arranged.

 

 

 

 

Figure 1. Anzá Project

 

 

Pepas

The Company's primary focus since reassuming control of the Project in late
2024, was to explore the immediate area of Pepas, ultimately leading to the
publication of a maiden MRE for the Pepas gold deposit on February 10(th),
2026.

 

This MRE was based upon drilling undertaken by the Company and its previous JV
partner from 2022 to late 2025. Results from the final hole included in the
MRE, PEP074, were announced on January 8(th), 2026.

 

Following completion of the MRE drillout in late 2025, the Company then
embarked on a semi-regional drilling program around the Pepas deposit. The
objective of this drilling program was to better understand the larger scale
litho-structural controls that led to formation of the Pepas deposit, such
that, in combination with additional mapping and sampling in the wider region,
vectors toward additional mineralisation might be developed.

 

As announced on April 14(th), 2026, a new zone of mineralisation, geologically
similar to Pepas, has been discovered approximately 100m west of the main
Pepas zone.

 

This zone had been first identified in two drill holes from early 2025, but
only returned to in early 2026 once the Pepas MRE had been completed.

 

A number of holes (PEP082 to PEP090) have now been completed into this zone,
from various positions and in various directions, in order to gain some
understanding of the nature, orientation and controls upon this zone. Results
thus far are highly encouraging with thick intersections of shallow gold
mineralisation being recorded.  Particularly encouraging was PEP090, drilled
some 30m NW of previous holes, demonstrating mineralisation over 100m in
strike with untested strike extension.

 

 Hole Number     From (m)     To (m)     Interval (m)    Au (g/t)
 PEP084          0            6.95       6.95            0.98
                 8.5          10.8       2.3             0.48
 PEP085          0            3.7        3.7             0.63
                 14.95        31.05      16.1            2.68
 including       20.9         26.25      5.35            4.18
 PEP086          0            9.8        9.8             0.96
 including       0            4.3        4.3             1.83
 PEP087          9.4          31.1       21.7            1.42
 including       19.05        27.8       8.75            2.28
 PEP088          4.9          14.7       9.8             1.41
 PEP089          6.9          11.15      4.25            0.38
 PEP090          9.6          14.15      4.55            0.46
                 17.95        41.4       23.45           2.98
 including       29.9         37.3       7.4             7.23
                 64.1         69.9       5.8             1.94
 including       67.6         69.9       2.3             3.19

Table 1. Latest drill Intercepts, Pepas Prospect

 

As previously announced, after completion of hole PEP090, the rig operating at
Pepas has been moved southward to other targets, to allow time for geological
and assay information from Pepas West to be compiled. This is an ongoing
process; however, the Company's geological team note that Pepas West is worthy
of follow-up and it is planned that the rig will return here in several weeks
to begin to define the size of this mineralised zone.

Figure 2.  Plan of holes, Pepas West

 

 

Figure 3. Section PEP084,85,86

 

Figure 4. Section PEP087

 

Figure 5. Section PEP088

 

 

Figure 6. Section PEP090

 

APTA

The APTA prospect in the centre of the Project area has seen almost 39,000m of
drilling by various companies since 2012. This work has identified a
substantial epithermal gold system.

 

The last phase of drilling was undertaken by the Company's previous JV
partner, MMA, from late 2020 through early 2022, at which time the abatement
of Covid related operational restrictions allowed MMA field crews to begin to
explore the wider Anzá project area. Results from the final holes of this
phase of work were announced on 27(th) June 2022.

 

A new phase of drilling was commenced some weeks ago, with hole MAP-106
planned to assess several new geological concepts to assist in planning a
larger drill campaign that may, if successful, allow APTA to move to resource
status.

 

Progress of MAP-106 has been very slow due to several zones of difficult and
broken ground. However, the hole is now well past 300m and within the target
zone. Going forwards, new drill pads are being developed in different
locations such that these issues are not repeated.

 

 

Orosur CEO Brad George commented:

"It is encouraging to see Anzá now beginning to delivery on its promise.
Pepas now has a resource, with more being found nearby, APTA being drilled and
El Cedro yet to come."

 

 

For further information, visit www.orosur.ca (http://www.orosur.ca) , follow
on X @orosurm or please contact:

 

Orosur Mining Inc

Louis Castro, Chairman,

Brad George, CEO

info@orosur.ca

Tel: +1 (778) 373-0100

 

SP Angel Corporate Finance LLP - Nomad & Joint Broker

Caroline Rowe / Jen Clarke / Devik Mehta

Tel: +44 (0) 20 3470 0470

 

Turner Pope Investments (TPI) Ltd - Joint Broker

Andy Thacker/Guy McDougall

Tel: +44 (0)20 3657 0050

 

Flagstaff Communications and Investor Communications

Tim Thompson

Alison Allfrey

Fergus Mellon

orosur@flagstaffcomms.com

Tel: +44 (0)207 129 1474

 

The information contained within this announcement is deemed by the Company to
constitute inside information as stipulated under the Market Abuse Regulations
(EU) No. 596/2014 ('MAR') which has been incorporated into UK law by the
European Union (Withdrawal) Act 2018. Upon the publication of this
announcement via Regulatory Information Service ('RIS'), this inside
information is now considered to be in the public domain.

 

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

 

 

 

Drill Hole Details - Pepas prospect 2022/2026 Programme*

 Hole ID   Easting (m)  Northing (m)  Elevation asl (m)  Dip (°)   Azimuth (°)
 PEP-001   403384       705000        1001               -50       150
 PEP-002   403384       705000        1001               -60       290
 PEP-003   403240       705142        1001               -49.60    95.2
 PEP-004   403508       705671        838                -59.8     99.8
 PEP-005   403373       704990        1008               -49.8     94.6
 PEP-007   403374       704990        1008               -69.9     170
 PEP-008   403232       704803        971                -50       60
 PEP-009   403032       705057        1055               -50       80
 PEP-010   403375       705106        982                -50.31    190.4
 PEP-011   403573       704939        1001               -50.3     255
 PEP-012   403415       704890        997                -56       352
 PEP-013   403413       704887        997                -50       43
 PEP-014   403400       704910        1007               -50       43
 PEP-015   403375       704938        1017               -50       43
 PEP-016   403326       704912        999                -50       43
 PEP-017   403365       704848        976                -40       47
 PEP-018   403345       704851        977                -45       43
 PEP-019   403446       704890        991                -45       43
 PEP-020   403446       704890        991                -75       43
 PEP-021   403424       704935        1012               -62       223
 PEP-022   403424       704935        1012               -42       223
 PEP-023   403245       704927        969                -50       43
 PEP-024   403245       704927        969                -78       43
 PEP-025   403369       704888        1001               -45       43
 PEP-026   403339       704955        1008               -63       50
 PEP-027   403468       704909        1003               -46       228
 PEP-028   403398       704957        1012               -58       223
 PEP-029   403311       705018        1011               -50       50
 PEP-030   403311       705018        1011               -50       000
 PEP-031B  403486       704901        998                -52       220
 PEP-032   403431       704861        982                -60       15
 PEP-033   403431       704861        982                -65       100
 PEP-034   403431       704861        982                -45       315
 PEP-035   403369       704882        996                -45       223
 PEP-036   403311       705152        989                -45       30
 PEP-037   403354       705227        958                -50       210
 PEP-038   403332       705219        967                -45       128
 PEP-039   403411       704798        957                -45       73
 PEP-040   403369       704882        995                -80       212
 PEP-041   403373       704936        1008               -50       3
 PEP-042   403396       705038        716                -50       82
 PEP-043   403298       704942        981                -50       43
 PEP-044   403402       704948        1011               -62       33
 PEP-045   403406       704949        1011               -60       223
 PEP-046   403420       704933        1007               -53       43
 PEP-047   403414       704927        1008               -74       223
 PEP-048   403448       704922        1005               -54       043
 PEP-049   403447       704920        1005               -55       223
 PEP-050   403459       704905        1003               -45       43
 PEP-051   403391       704928        1011               -61       43
 PEP-052   403391       704928        1011               -87       43
 PEP-053   403391       704929        1012               -60       223
 PEP-054   403380       704954        1011               -52       43
 PEP-055   403380       704954        1011               -86       223
 PEP-056   403371       704970        1012               -61       43
 PEP-057   403371       704970        1012               -71       223
 PEP-058   403371       704970        1012               -85       223
 PEP-059   403384       704976        1007               -59       43
 PEP-060   403372       704908        1005               -55       43
 PEP-061   403361       704988        1010               -80       223
 PEP-062   403361       704988        1010               -61       43
 PEP-063   403345       705005        1009               -50       80
 PEP-064   403356       704923        1005               -51       43
 PEP-065   403359       704949        1008               -59       43
 PEP-065B  403359       704949        1008               -50       43
 PEP-066   403423       704938        1009               -64       223
 PEP-067   403400       704870        990                -53       43
 PEP-068   403342       704989        1010               -56       43
 PEP-069   403342       704987        1010               -80       218
 PEP-070   403260       705071        1013               -50       30
 PEP-071   403333       705005        1009               -51       90
 PEP-072B  403435       704879        989                -70       43
 PEP-073   403423       704917        1006               -50       307
 PEP-074   403423       704917        1006               -60       127
 PEP-075   403240       705267        946                -50       221
 PEP-076   403240       705267        946                -60       042
 PEP-077   403304       705228        959                -60       042
 PEP-078   403304       705228        959                -60       222
 PEP-079   403304       705228        959                -50       120
 PEP-080   403093       705100        1026               -50       042
 PEP-081   403215       705006        984                -55       032
 PEP-082   403261       704941        977                -58       190
 PEP-083   403267       704913        972                -45       342
 PEP-084   403267       704913        972                -50       125
 PEP-085   403267       704913        972                -50       310
 PEP-086   403272       704910        979                -55       310
 PEP-087   403262       704941        977                -50       260
 PEP-088   403252       704946        979                -50       202
 PEP-089   403252       704946        979                -50       202
 PEP-090   403238       704980        976                -45       200

*Coordinates WGS84, UTM Zone 18

 

 

 

 

About Orosur Mining Inc.

Orosur Mining Inc. (TSXV: OMI; AIM: OMI) is a minerals explorer and developer
currently operating in Colombia and Argentina.

 

Qualified Persons Statement

The information in this news release was compiled, reviewed, verified and
approved by Mr. Brad George, BSc Hons (Geology and Geophysics), MBA, Member of
the Australian Institute of Geoscientists (MAIG), CEO of Orosur Mining Inc.
and a qualified person as defined by National Instrument 43-101.

 

Orosur Mining Inc. staff follow standard operating and quality assurance
procedures to ensure that sampling techniques and sample results meet
international reporting standards.

 

Drill core is split in half over widths that vary between 0.3m and 2m,
depending upon the geological domain. One half is kept on site in the Minera
Anzá core storage facility in the case of the Anza Project, or on site in
temporary racks in the case of the El Pantano Project, with the other sent for
assay.

 

Industry standard QAQC protocols are put in place with approximately 10% of
total submitted samples being blanks, repeats or Certified Reference Materials
(CRMs).

 

Samples for holes PEP-001 to PEP-011 were sent to the Medellin preparation
facility of ALS Colombia Ltd, and then to the ISO 9001 certified ALS Chemex
laboratory in Lima, Peru.

 

Samples from PEP-012 onwards are sent to Medellin laboratory of Actlabs for
preparation and fire assay, with some sample then sent to the Canadian Actlabs
facility for multi element assay

 

Samples from the EL Pantano project are sent to the preparation facility and
fire assay laboratory of Alex Stewart Laboratories in Perito Moreno to be
assayed for gold.  Pulps are then sent to the larger Alex Stewart facility in
Mendoza for multi-element analysis.

 

30 gram nominal weight samples are then subject to fire assay and AAS analysis
for gold with gravimetric re-finish for overlimit assays of >5 g/t.
ICP-MS Ultra-Trace level multi-element four-acid digest analyses may also
undertaken for such elements as silver, copper, lead and zinc, etc.

 

Gold intersections are reported using a lower cut-off of 0.3g/t Au over 3m.

 

Intersections are quoted as downhole thicknesses.  True thicknesses are
unknown.

 

Forward Looking Statements

 

All statements, other than statements of historical fact, contained in this
news release constitute "forward looking statements" within the meaning of
applicable securities laws, including but not limited to the "safe harbour"
provisions of the United States Private Securities Litigation Reform Act of
1995 and are based on expectations estimates and projections as of the date of
this news release.

 

Forward-looking statements include, without limitation, the continuing focus
on the Pepas prospect, the exploration plans in Colombia and the funding of
those plans, and other events or conditions that may occur in the future.
There can be no assurance that such statements will prove to be accurate.
Actual results and future events could differ materially from those
anticipated in such forward-looking statements. Such statements are subject to
significant risks and uncertainties including, but not limited to, those
described in the Section "Risks Factors" of the Company's MD&A for the
year ended May 31, 2025. The Company's continuance as a going concern is
dependent upon its ability to obtain adequate financing. This material
uncertainty may cast significant doubt upon the Company's ability to realize
its assets and discharge its liabilities in the normal course of business and
accordingly the appropriateness of the use of accounting principles applicable
to a going concern. The Company disclaims any intention or obligation to
update or revise any forward-looking statements whether as a result of new
information, future events and such forward-looking statements, except to the
extent required by applicable law.

 

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