REG - Orosur Mining Inc - Infill continues to deliver, 71.85m @ 6.13g/t Au

Orosur MiningAnnouncement

Tue 07:00

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RNS Number : 6263W  Orosur Mining Inc  26 August 2025

 

 

 

Orosur Mining Inc - infill drilling continues to deliver, 71.85m @ 6.13g/t Au.

 

·    Assays from four more holes from the Pepas MRE infill program
include:

o PEP050 - 34m @ 2.33g/t Au from surface

o PEP051 - 61.3m @ 3.36g/t Au

o PEP052 - 71.85m @ 6.13g/t Au

·    El Cedro soil sampling 45% complete - first samples submitted for
assay.

·    Contracts being finalised for El Pantano (Argentina) drilling -
planned to commence mid-October.

 

 

London, August 26(th), 2025. 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 flagship, 100% owned, Anzá Gold
Project ("Project") in Colombia, and its El Pantano Gold/Silver Project ("El
Pantano") in Argentina.

 

Anzá - Colombia

As announced on 14(th) July 2025, the Company took the formal decision to
commence infill drilling at its Pepas gold prospect at Anzá with the
objective of moving Pepas to a NI43-101 compliant Mineral Resource Estimate
("MRE") by the end of the year.

 

The first several holes of this program (announced 17(th) July 2025),
vindicated this decision by returning exceptional widths and grades,
especially hole PEP045 which returned 62.3m @ 12.76g/t Au.

 

The drill program has been designed in conjunction with external consultants
to facilitate a MRE being calculated, with the multiple objectives of
infilling previous drilling, expanding beyond current drilling to define the
boundaries, and understanding the geological controls upon mineralisation and
the variations in geology and grade across the deposit.

 

Holes will be drilled in an order that attempts to address these issues
concurrently.

 

These four holes announced today are a continuation of this program and
designed largely to infill to the required spacing to allow a MRE to be
calculated to a high level of confidence. Drilling continues to return thick
sequences of high-grade gold mineralisation, starting from surface or near
surface.

 

Importantly, drilling is also providing guidance as to grade and mineralogical
variation across the ore body that will allow our teams to define various
metallurgical domains that will in turn form the basis of more advanced
metallurgical studies that are planned to commence soon.

 

 

 

 

 

 

 Hole Number     From (m)     To (m)     Interval (m)    Au (g/t)
 PEP050          0            34         34              2.33
 including       9.65         12.65      3               3.71
 including       23.3         25.4       2.1             9.4
 PEP051          0            7.4        7.4             0.43
                 11.2         72.5       61.3            3.36
 including       27.4         36.5       9.1             5.93
 including       39.3         48.9       9.6             5.31
 PEP052          0            4.4        4.4             2.24
                 9.4          81.25      71.85           6.13
 including       29.95        48.4       18.45           13.51
                 65.2         71.2       6               9.11
 PEP053          17           27.1       10.1            0.9

Table 1. Latest drill Intercepts, Pepas Prospect

 

 

 

Figure 2.  Plan of holes

 

 

Figure 3. Section, PEP050

 

 

Figure 4. Section PEP051, PEP051 and PEP053

 

 

 

 

 

 

El Cedro - Anzá, Colombia

The El Cedro prospect is a large gold porphyry system, located toward the
south of the Anzá project, on the same granted exploration licence as the
Pepas and APTA deposits.

 

The Company has recommenced a large ridge and spur soil sampling program that
had been previously suspended due to seasonal rain and access issues.  This
program is now roughly 45% complete, and it is expected that the remainder of
the program should be completed by mid-October 2025.

 

The first batch of 40 samples from the restarted program have been submitted
for assay this week, with results expected soon.

 

 

El Pantano - Argentina

The El Pantano Project is an early-stage gold/silver exploration project in
Santa Cruz province, southern Argentina.

 

The Project comprises approximately 550km2 of contiguous licences in the
prolific Deseado Massif region, roughly 45km from Anglo Gold's Cerro
Vanguardia mining camp.

 

The El Pantano Project is subject to an Exploration & Joint Venture ("JV")
agreement ("Agreement") with private Argentinean company DESEADO DORADO S.A.S
and its shareholders ("Deseado"), the details of which were announced on
February 15(th) 2022. The Company has earned a 51% interest in the El Pantano
Project and must spend an additional US$2m in the two years from Feb 14(th),
2025, in order to earn 100% ownership.

 

The Company has been carrying out regional exploration at El Pantano for
several years, including geological mapping, geochemical sampling, ground
magnetics and induced polarisation geophysical surveys. These work programs
have provided evidence suggestive of major rift-related low sulphidation
epithermal system, of the type that has led to the development of major gold
and silver deposits in the region.

 

Drill permits for El Pantano were obtained late in 2024, and the Company is
now finalising drill contracts with a view to commencing drilling in
mid-October 2025, the first drill program that has ever been undertaken
anywhere on the property.

 

Between 10 and 14 diamond holes are planned for a total of approximately
3000m, targeting geological structures and geochemical/geophysical anomalies
identified from previous work. Additional details will be provided once more
precise timing is finalised.

 

The area is very remote and largely unpopulated and thus substantial effort
has been required to plan and develop the necessary camp and access
infrastructure for a drilling program of this size.

 

The Deseado Massif is a major gold producing area in Argentina and thus some
necessary downstream infrastructure exists in the region. In particular, an
international laboratory company has a fire assay facility in the regional
town of Perito Moreno and thus a short assay turnaround time (for gold and
silver) is anticipated.

 

 

Orosur CEO Brad George commented:

"Pepas remains on track and the high bar set by the early holes continues to
be cleared on a regular basis. In the meantime, we are excited to be getting
close to opening a second drilling front on our El Pantano project in
Argentina. Early stage, but this is elephant country, and we like what we have
seen thus far".

 

 

Colombia - ANZÁ Project ("Project")

The Anzá Project is now 100% owned by the Company following completion of a
Share Purchase Agreement ("SPA"), announced 28(th) November 2024, whereby the
Company purchased all of the shares of its previous JV partner; Minera Monte
Aguila ("MMA").

 

The Project, which is located 50km west of Medellin, is easily accessible and
boasts excellent infrastructure including water, power and communications as
well as a large exploration camp.

 

From September 2018 to November 2024, the Anzá Project was under the control
of its previous JV partner MMA, itself a 50/50 venture between the world's two
largest gold miners, Agnico Eagle Mines and Newmont Mining.

 

Prospects

The Company is currently focussed on three prospects within the Anzá Project
- Pepas, APTA and El Cedro. All three prospects are within the same granted
exploration title that is broken into two, non-contiguous pieces (Figure 2).

 

Drilling is currently being undertaken at the Pepas prospect in the northern
extent of the Anzá Project (pre-acquisition) over 10km north of the central
base camp at APTA. In parallel, mapping and sampling is being undertaken over
the El Cedro porphyry system in the south of the project area.

 

 

Figure 5. Main prospects, licences pre-MMA acquisition

 

 

Holes Drilled post MMA Transaction

38 holes have been drilled at Pepas since the MMA Transaction in November
2024.

Assay results are tabulated below.

 

 Hole Number     From (m)     To (m)     Interval (m)    Au (g/t)
 PEP012          0            66.75      66.75           5.64
 PEP013          0            77.30      77.30           7.68
 PEP014          0            75.1       75.1            5.58
 PEP015          23.5         63.7       40.2            3.75
 PEP016          61.6         105.3      43.7            3.13
 PEP017          56.1         96.3       40.2            2.06
 PEP018          0            54.1       54.1            6.01
 PEP019          0            44.3       44.3            1.63
 PEP020          0            54.65      54.65           1.94
 PEP021          0            107.05     107.05          6.22
 PEP022          0            76.3       76.3            7.24
 PEP023          0            15         15              1.7
 PEP024          9.24         15.6       6.35            1.99
 PEP025          0            10.1       10.1            1.45
                 16.5         79         62.5            5.4
 PEP026          0            14.8       14.8            0.57
                 43.6         72         28.4            2.52
 PEP027          1            80.15      79.15           2.0
 PEP028          29.5         60.85      31.35           1.61
 PEP029          0            30.7       30.7            0.31
 PEP030          0            77.9       77.9            0.32
                 115.6        122.6      7               0.31
 PEP031B         28.15        41.1       12.95           0.73
                 74.1         95.9       20.8            0.3
 PEP032          0            92         92              1.68
 PEP033          0            21.3       21.3            5.88
 PEP034          36           95         59              10.15
 PEP035          0            11.4       11.4            2.71
 PEP036B         0            40.45      40.45           0.62
 PEP037          0            3          3               0.65
 PEP038          0            16.8       16.8            0.68
 PEP039          No significant intersections
 PEP040          0            10.25      10.25           1.35
 PEP041          34.35        66.1       31.75           2.01
 PEP042          104.8        107.55     2.75            1.41
                 116.45       119.7      3.25            4.89
 PEP043          No significant intersections
 PEP044          5.8          44.3       38.5            6.01
 PEP045          9.5          71.8       62.3            12.76
 PEP046          0            53.2       53.2            3.36
 PEP047          0            104        104             6.61
 PEP048          0            32.3       32.3            3.65
 PEP049          0            94.2       94.2            3.74
 PEP050          0            34         34              2.33
 PEP051          0            7.4        7.4             0.43
                 11.2         72.5       61.3            3.36
 PEP052          0            4.4        4.4             2.24
                 9.4          81.25      71.85           6.13
 PEP053          17           27.1       10.1            0.9

Table 2.  Results to date, post MMA Transaction

 

 

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

 

Orosur Mining Inc

Louis Castro, Executive Chairman,

Brad George, CEO

info@orosur.ca

Tel: +1 (778) 373-0100

 

SP Angel Corporate Finance LLP - Nomad & Joint Broker

Jeff Keating / Jen Clarke / Devik Mehta

Tel: +44 (0) 20 3470 0470

 

Turner Pope Investments (TPI) Ltd - Joint Broker

Andy Thacker/James Pope

Tel: +44 (0)20 3657 0050

 

Flagstaff Communications and Investor Communications

Tim Thompson

Mark Edwards

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 2022/2024 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

 

*  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, Argentina and Nigeria.

 

About the Anzá Project

Anzá is a gold exploration project, comprising three exploration licences,
and a large number of licence applications, totalling 399km2, in the prolific
Mid-Cauca belt of Colombia.

 

The Anzá Project is currently wholly owned by Orosur via its subsidiaries,
Minera Anzá S.A. and Minera Monte Aquila S.A.S.

 

The project is located 50km west of Medellin and is easily accessible by
all-weather roads and boasts excellent infrastructure including water, power,
communications and large exploration camp.

 

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, 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 assay.

 

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, 2024. The Company's continuance as a going concern is
dependent upon its ability to obtain adequate financing, to reach profitable
levels of operations and to reach a satisfactory closure of the Creditor´s
Agreement in Uruguay. These material uncertainties 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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