REG - Orosur Mining Inc - Orosur drills 62.3m @ 12.76g/t Au at Pepas

Orosur MiningAnnouncement

17/07/2025 07:30

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RNS Number : 3684R  Orosur Mining Inc  17 July 2025

 

 

 

Orosur Mining Inc - Exceptional results at Pepas

 

·    Assays from nine more holes at Pepas and surrounds. Best results
include:

o PEP040 - 10.25m @ 1.35 g/t Au

o PEP041 - 31.75m @ 2.01 g/t Au

o PEP042 - 3.25m @ 4.89 g/t Au

o PEP044 - 38.50m @ 6.01 g/t Au

o PEP045 - 62.3m @ 12.76 g/t Au

o PEP046 - 53.2m @ 3.36 g/t Au

 

·    Geological studies developing new concepts for later testing.

 

London, July 17(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 Anzá Project ("Project") in
Colombia.

 

Colombia - ANZÁ 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.

 

The Project sits within the prolific mid-Cauca belt, Colombia's primary gold
belt, and is located along strike between several world class gold/copper
deposits including Buritica, Quebradona and Guayabales/Marmato (Figure 1).

 

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.

 

 

Figure 1.  Mid-Cauca Belt

 

 

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 2. Main prospects, licences pre-MMA acquisition

 

 

Pepas Prospect

Pepas was discovered by MMA in late 2021 by BLEG sampling and geological
mapping, followed by 11 diamond drill holes in 2022 (PEP001 to PEP011).

 

After completion of the transaction to buy MMA ("Transaction"), the Company
restarted drilling at Pepas in late-November 2024.

 

Drilling commenced with hole PEP012, which was positioned to confirm previous
high-grade results in holes PEP001, PEP005 and PEP007 drilled in 2022.

 

 

 

Figure 3.  Plan of holes

 

Drilling at Pepas, post Transaction, has largely concentrated on a small
central core, where a body of high-grade gold mineralisation is being defined
from surface.   Additional drilling has also been undertaken around this
central core to understand the wider geological context and as the
commencement of a larger scale exploration program.

 

Of the nine holes discussed in this announcement, six (PEP038 to PEP043) were
drilled around but outside the Pepas core, while three (PEP044 to PEP046) have
been drilled as part of the previously announced infill program that is
designed to move Pepas to a Mineral Resource Estimate (MRE).

 

PEP038 was drilled to the north at what is referred to as Pepas North.  This
was the third of three holes drilled here as the first move to this area,
following up positive surface geochemical results. This hole was drilled
orthogonal to the two previous holes, to provide the maximum lithological and
structural information.  PEP038 returned a result of 16.8m @ 0.68g/t Au. As
with the two previous holes in this vicinity, this hole demonstrates the scale
of the epithermal system that hosts Pepas and has provided valuable
information to understand the controls of this system.

 

PEP039 was a speculative exploration hole drilled a substantial distance to
the south and west of the Pepas core, following up zones of surface
silicification. No substantial results were returned.

 

PEP040 was drilled outside the known Pepas envelope to the SW, to test
lower-level shallow mineralisation previously identified by earlier drilling.
The hole returned a small intersection of 10.25m @ 1.35g/t Au from surface
(figure 4) that indicates the potential for a body of satellite
mineralisation, adjacent to the Pepas core, that will require additional
follow up.

 

Figure 4. PEP040 and PEP046 section

 

 

PEP041 was drilled outside the currently known Pepas envelope to the north to
test the northward extension of the mineralisation first identified by earlier
drilling undertaken by the Company's previous JV partner MMA.  This hole
returned a positive intersection of 31.75m @ 2.01 g/t Au, opening this area
for potential extension (figure 5).

 

Figure 5. PEP041 Section

 

PEP042 was drilled to the NE of the currently known central core of
mineralisation as a conceptual hole to test geophysical zones that were
identified by the recent airborne magnetic survey. No surface geochemical work
has yet been undertaken in this area. Several thin zones of encouraging gold
mineralisation were encountered in this hole, well outside the known
mineralised core (figure 6).  This result has substantially increased the
potential of this area and will now be followed up with surface mapping and
sampling, and potentially later drilling.

Figure 6.  PEP042 Section

 

PEP043 was drilled outside the known mineralised envelope to test areas of
surface silicification.  No substantial intersections were recorded

 

Holes PEP044, PEP045 and PEP045 were all drilled as part of the previously
announced MRE infill program at Pepas.

 

A plan for this program has been developed to infill Pepas to sufficient
degree to potentially allow a high level (measured and indicated) MRE to be
calculate, but also to assist in understanding the controls upon
mineralisation and to better define the very high-grade zones that have the
potential to add substantial ounces.

 

Results from these holes were exceptional, with PEP044 returning 38.5m @
6.01g/t Au, PEP045 returning 62.3m @ 12.76g/t Au and PEP046 returning 53.2m @
3.36g/t Au (figures 4 and 7).

 

The Company feels these results vindicate its decision to begin the resource
drilling phase at Pepas, with these exceptionally thick, and high-grade
results, substantially upgrading the potential for contained ounces beyond
what had been assumed at the commencement of the process.  In addition, the
results, particularly that of PEP045, have provided valuable insight to the
primary controls upon this mineralisation, suggestive of the main feeder zone
being a series of steeply dipper structures along the SW margin of the zone.
The depth extent implications of this theory will be tested in later drilling

 

Figure 7. PEP044 and PEP045 section

 

 

Drill intersections for these most recent holes are as follows:

 

 Hole Number     From (m)     To (m)     Interval (m)    Au (g/t)
 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
 including       37.2         43.75      6.55            4.62
 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
 including       23.25        39.8       16.55           11.19
 PEP045          9.5          71.8       62.3            12.76
 including       35.1         48         12.9            23.19
                 61.7         71.8       10.1            33.39
 PEP046          0            53.2       53.2            3.36
 including       7.6          18         10.4            6.29

Table 1. Latest drill Intercepts, Pepas Prospect

 

 

 

Geological Modelling

As previously announced, Company geological teams, in cooperation with an
external consultant are currently engaged in a comprehensive review and
reinterpretation of all drilling undertaken on the Anzá project since its
inception in roughly 2012, with particular focus on the APTA and Pepas
prospects as these both have near-term resource potential.

 

The results thus far are highly encouraging, with recent insights suggesting
substantively different genetic theories to that put forward by the previous
owners of the ANZÁ project and the Company's previous JV partner.  These
concepts are being finalised now, which will lead to exploration plans being
formalised to run in parallel with the ongoing resource infill program at
Pepas.

 

 

Holes Drilled post MMA Transaction

26 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

Table 2.  Results to date, post MMA Transaction

 

Orosur CEO Brad George commented:

"The latest results at Pepas are exciting.  Not only do we continue to expand
the area of potential that will require drill follow-up, but the commencement
of resource drilling has exceeded all expectations, with some of the thickest
and highest grade intersections seen anywhere in the world. We have only just
begun."

 

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

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

 

*  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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