REG - Rome Resources PLC - High-value Tin, Copper and Zinc identified

Rome ResourcesAnnouncement

Mon 07:00

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RNS Number : 2415Z  Rome Resources PLC  15 September 2025

This announcement contains inside information for the purposes of Regulation
11 of the Market Abuse (Amendment) (EU Exit) Regulations 2019/310. With the
publication of this announcement via a Regulatory Information Service, this
inside information is now considered to be in the public domain.

15 September 2025

Rome Resources plc

("Rome" or the "Company")

High-value Tin, Copper and Zinc identified ahead of maiden MRE

 

Rome Resources plc announces the latest assay results received from recent
drilling at its Mont Agoma prospect, part of the Company's flagship Bisie
North Project in eastern Democratic Republic of Congo. The drilling campaign
has identified wide, high-value tin zones together with significant copper
and zinc mineralisation. These results are expected to provide the final
inputs to the Company's maiden mineral resource estimate ("MRE"), which is in
the process of being finalised by the MSA Group and which remains targeted for
publication by the end of September 2025.

 

Assays have been received for Mont Agoma drillholes MADD022, MADD025, MADD027
and MADD028, in the western mineralized zone and drillhole MADD030A in the
newly identified eastern tin zone (Mont Agoma East), where a 23 metre wide tin
zone has been identified from assayed core samples.

 

Within MADD030A at Mont Agoma East, the 23-metre assayed tin zone sits in a
larger 40-metre-wide tin mineralised zone, core recovery being lower in the
near-surface gossan material.

 

Highlights

 

·    Significant tin intercepts in these drillholes include:

 

o  MADD030A: 23.1m at 0.42% Sn from 3m, including 0.45m at 1.56% from 8.6m,
12.2m at 0.75% Sn from 12.3m, including, 1.6m at 1.42% from 13.5m and 5.0m at
0.92% Sn from 19.5m including 1m at 1.67% from 22m

o  MADD022: 5.7m at 0.56% Sn from 19m, including 0.5m at 3.12% Sn

o  MADD027: 19.0m at 0.38% Sn from 72m, including 0.40m at 1.10% Sn

o  MADD028: 1.0m at 1.74% Sn from 109m, including 0.50m at 2.88% Sn

o  MADD028: 13.0m at 0.24% Sn from surface, including 0.50m at 1.40% Sn

 

·    The intersection in MADD030A lies within a broader tin zone of 35m at
0.35% Sn from 3m making the eastern zone a significant drilling target with a
potential strike of more than 500 metres.

 

·    Tin is currently trading at c. US$34,000 per tonne, underscoring the
high value of these results.

 

·    Additionally, exceptional zinc and strong copper intercepts have been
recorded, the highlights being:

 

o  MADD025: 56m at 4.86% Zn from 136m, including 42.0m at 5.90% Zn

o  MADD025: 2.8m at 20.04% Zn from 131m and 9.5m at 3.3% Zn from 104m,
including 0.8m at 30.00% Zn

o  MADD027: 2.9m at 2.11% Cu from 67m, including 0.9m at 4.65% Cu

o  MADD028: 0.5m at 28.40% Zn from 130m and 11m at 11.05% Zn from 132m

o  MADD030A: 4.25m at 2.65% Cu from 71m, including 2.25m at 4.13%

 

 

Paul Barrett, Chief Executive Officer of Rome Resources, commented:

 

"These latest assay results underscore the high-value potential of Mont Agoma.
The tin grades we are seeing are excellent, particularly with tin trading at
around US$34,000 per tonne, while wide intercepts of high-grade zinc
mineralisation provide valuable additional economic upside. Importantly, the
confirmation of Mont Agoma East gives us a new growth prospect that is
expected to be incorporated into a follow-up resource estimate after the
maiden MRE, targeted to be announced by the end of this month.

 

Our immediate focus is to finalise the maiden MRE with MSA for both Mont Agoma
and Kalayi. This is expected to set the foundation for the next phase of the
project - drilling out the new eastern tin zone, undertaking deeper drilling
in the main Mont Agoma zone, and stepout drilling at the Kalayi tin project.

 

The 23 metre tin intercept in hole MADD030A creates a compelling target for
further drilling down-plunge to the southeast. We look forward to delivering
the maiden resource estimate and moving quickly into the next phase of
resource drilling to capture this upside potential."

 

Exploration Update

 

The Company also announces the formal naming of Mont Agoma East, a newly
defined prospect where hole MADD030A (re-drill of abandoned hole MADD030)
reported a 23m-wide tin zone from surface. Together with results from the
western Mont Agoma zone, these assays indicate the system's scale and
reinforces the structural model of fault repetition, which has displaced
deeper mineralisation upwards into Mont Agoma East.

 

The tin results are particularly significant; while the main zone remains high
in the system the grades are strengthening with depth. Drill hole MADD030A
demonstrated intervals in excess of 2% Sn (measured by the XRF analyser),
pointing to the potential for higher-grade shoots at depth, consistent with
other granite-hosted tin-copper systems worldwide.

 

The significant zinc mineralisation intersected in drill hole MADD025 provides
further encouragement, representing a potential economic by-product and a
low-risk overburden as the tin zones are targeted at depth.

 

Maiden Mineral Resource Estimate

 

All assays from the western Mont Agoma zone are being incorporated into the
maiden MRE, which is expected to be announced by the end of this month.
Results from Mont Agoma East, including the 23 metres tin intercept in
MADD030A and the significant copper, tin and zinc mineralisation intersected
in MADD032 (Assays remain outstanding), are expected to be incorporated into a
subsequent resource update following further drilling.

 

Rome is working closely with the MSA Group to deliver a technically robust
maiden MRE that reflects the multi-metallic nature of Mont Agoma. This will
mark the first key milestone in defining a resource base at Bisie North, with
further upside to follow as Mont Agoma East is drilled out.

 

Further drilling detail

 

The assays from drillholes MADD022 through MADD028 in the western zone will be
incorporated in the maiden MRE, currently being finalized by the MSA Group in
South Africa. The assays from the eastern tin zone are expected be
incorporated into a resource update once the additional drilling has been
completed in the coming months.

 

Drillholes MADD022, MADD027 and MADD028 together with near surface tin
intersections in the early drill holes have defined a potentially higher tin
grade plunging shoot which abuts against the broad quartz silica fault zone in
the south (Figure 1). Tin grades in this ore shoot appear to increase with
depth, in line with the common gradation in granite-sourced copper-tin
deposits such as the Peruvian and Cornish plays. The same strike slip fault
zone runs parallel to the strike of mineralization and is interpreted to have
displaced the deeper mineralization to surface in MADD030A, creating the
eastern tin zone (Figure 2).

 

 

 

Figure 1. Long Section N-S across main Mont Agoma mineralisation zone

 

Figure 2. Outline map of tin zones in Mont Agoma

 

The 23-metre-wide tin intercept of the eastern tin zone from surface combined
with the absence of large amounts of copper indicates that the eastern zone is
deeper in the system and is therefore likely to have higher tin grades as it
plunges to the southeast.  The forward programme to drill this plunging shoot
at greater depths of up to 450 metres over a strike length of more than 500m
is expected to establish the geometry of the grade progression at depth and is
eagerly anticipated by management.

 

Looking ahead, additional step-out drilling targets are being developed with
ongoing geochemical soil sampling. An extension of the existing survey has led
to the identification of a northern extension of the copper anomaly and
additional areas with anomalous tin concentrations in the vicinity of
drillhole MADD030A in the eastern zone, tapering off southeastwards as the
interpreted ore shoot increases in depth. The geochemical database now holds
areas high-graded for step-out drilling for both tin and copper for to the
north of Mont Agoma and tin to the north of Kalayi.

 

 

 

For further information, please contact:

 

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 Rome Resources Plc                                                     Tel. +44 (0)20 3143 6748

 Paul Barrett, Chief Executive Officer

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 Joscelin Pinnington (Sales & Corporate Broking)

 OAK Securities (Joint Broker)                                           Tel. +44 (0)20 3973 3678

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Full List of Reported Assays

 

 BHID      From    To      Width  Sn%   Cu%   Ag (ppm)  Zn%    Pb%
 MADD022   64.00   65.00   1.00         1.09
           103.00  106.00  3.00         1.43
           135.00  138.00  3.00         0.71
           179.00  180.00  1.00         1.88
 incl.     179.00  179.50  0.50         3.09
 MADD022   189.00  189.50  0.50         0.92
           33.00   34.00   1.00                                0.74
           19.00   24.70   5.70   0.56
 incl.     23.00   23.50   0.50   3.12
 MADD022   36.00   45.30   9.30   0.39
 incl.     42.00   43.00   1.00   1.40
 MADD022   73.00   74.00   1.00   0.14
           55.00   56.00   1.00                         1.33
           141.00  166.00  25.00                        1.21
 incl.     148.00  153.00  5.00                         2.89
           161.00  161.45  0.45                         6.39
 MADD022   179.00  179.50  0.50                         1.92
 MADD025   115.00  127.20  12.20              13
           152.00  154.00  2.00               15
           167.00  167.50  0.50               11
           171.00  172.00  1.00               13
           188.00  189.00  1.00               14
           83.00   84.00   1.00         0.50
           120.00  124.00  4.00         0.58
           198.00  199.00  1.00         0.51
           119.00  127.20  8.20                                0.94
           138.00  138.50  0.50                                0.51
           141.65  144.00  2.35               13               0.82
           151.00  154.00  3.00                                1.00
           54.00   55.00   1.00   0.20
           118.00  137.50  19.50  0.14
           166.50  178.00  11.50  0.15
           104.00  113.50  9.50                         3.33
 incl.     106.00  106.80  0.80                         2.40
           112.70  113.50  0.80                         30.00
 MADD025   114.50  130.00  15.50                        5.53
 incl.     114.50  120.00  5.50                         3.88
           124.00  130.00  6.00                         9.95
 MADD025   130.50  131.00  0.50                         16.70
           131.50  134.30  2.80                         20.04
           136.00  192.00  56.00                        4.86
 incl.     136.00  178.00  42.00                        5.90
           183.00  186.00  3.00                         5.58
           191.00  192.00  1.00                         2.05
 MADD027   66.80   68.50   1.70               21
           75.00   76.00   1.00               10
           82.60   105.50  22.90              20
           128.00  129.00  1.00   0.11
           67.60   70.50   2.90         2.11
 incl.     67.60   68.50   0.90         4.65            6.09
 MADD027   83.10   88.00   4.90         2.50
           96.40   99.00   2.60         0.52
           103.00  129.00  26.00        0.72
 incl.     105.00  105.50  0.50         2.18
           121.00  121.60  0.60         2.31
           126.50  127.00  0.50         2.50
 MADD027   134.00  135.00  1.00         0.63
           50.00   50.80   0.80               10               1.65
           61.00   69.70   8.70                                0.87
 incl.     63.00   64.00   1.00                                2.73
 MADD027   82.60   94.00   11.40                               1.08
           98.00   109.00  11.00                               1.30
 incl.     98.00   98.60   0.60               125              4.09
           102.00  106.00  4.00                                1.57
 MADD027   49.00   56.00   7.00   0.10
           61.00   68.50   7.50   0.23
           72.20   91.20   19.00  0.38
           94.60   105.50  10.90  0.21
 incl.     100.60  101.00  0.40   1.10
 MADD027   114.00  115.00  1.00   0.10
           67.60   109.00  41.40                        4.07
 incl.     82.60   84.00   1.40                         3.99   3.13
           88.00   105.00  17.00                        7.83
 MADD028   89.00   101.00  12.00              13
           104.00  110.00  6.00               7
           136.50  139.50  3.00               15
           142.60  144.30  1.70               17
           129.00  130.00  1.00         0.50
           151.50  152.50  1.00         1.56
 incl.     152.00  152.50  0.50         2.48
 MADD028   160.00  162.00  2.00         1.06
           28.00   29.00   1.00                                0.72
           89.00   99.00   10.00                               0.62
           134.55  139.50  4.95                                1.05
 incl.     138.50  139.00  0.50                                5.72
 MADD028   143.00  144.30  1.30                                0.91
           109.50  110.50  1.00   1.74
 incl.     110.00  110.50  0.50   2.88
 MADD028   115.00  119.00  4.00   0.18
           125.00  126.00  1.00   0.13
           130.00  143.00  13.00  0.24
 incl.     135.00  135.50  0.50   1.40
 MADD028   149.50  157.50  8.00   0.18
           162.50  163.50  1.00   0.24
           89.00   98.00   9.00                         1.72
 incl.     95.50   96.00   0.50                         19.70
 MADD028   107.50  109.50  2.00                         9.02
 incl.     108.00  109.50  1.50                         11.81
 MADD028   110.00  119.00  9.00                         4.37
           125.00  130.50  5.50                         2.94
 incl.     130.00  130.50  0.50                         28.40
 MADD028   132.50  143.45  10.95                        11.05
           147.00  148.00  1.00                         2.01
           156.00  156.50  0.50                         1.85
 MADD030A  0.00    3.60    3.60               20
           62.60   65.00   2.40         0.68
           64.60   68.10   3.50         0.53
           71.35   75.60   4.25         2.65
 incl.     71.35   73.60   2.25         4.13
 MADD030A  2.80    23.10   20.30                               0.80
 incl.     15.00   15.60   0.60                                2.33
           43.50   44.10   0.60                                2.41
 MADD030A  61.30   62.60   1.30                                0.80
           0.00    23.10   23.10  0.42
 incl.     7.00    8.00    1.00   1.56
           14.00   15.60   1.60   1.42
           21.00   22.00   1.00   1.67
 MADD030A  24.60   32.10   7.50   0.09                         0.70
           34.00   35.00   1.00   0.12                         0.87
           36.00   38.50   2.50   0.02                         0.47
           42.00   48.60   6.60   0.05                         1.06
           49.00   50.00   1.00   0.03                         0.66
           52.00   53.00   1.00   0.08
           53.85   54.60   0.75   0.01
           61.30   65.00   3.70   0.04
           64.60   75.60   11.00  0.02

 

Drill hole coordinates and details.

 Drillhole  Easting  Northing  RL   Azimuth  Dip  Depth (m)
 MADD022    578948   9891440   804  230      -60  206.3
 MADD025    578960   9891584   804  230      -63  31.5
 MADD027    578894   9891597   807  230      -60  155.7
 MADD028    578940   9891636   790  230      -60  191.2
 MADD030A   578907   9891749   774  230      -60  113.0

Coordinates are handheld GPS and in UTM 35S format.

 

Qualified Person Statement

 

Dr Deon Vermaakt is a consultant of Rome Resources plc, a qualified geologist
and a registered Professional Natural Scientist (Geological Science) with the
South African Council for Natural Scientific Professions (SACNASP Reg. No.
400074/03). Dr Vermaakt is a qualified person (QP) under NI 43-101 and as
defined by the AIM Note for Mining, Oil and Gas Companies and has reviewed and
approved the scientific and technical information contained in this news
release.

 

Four batches consisting of 756 samples were submitted to ALS laboratory for
analysis. Of these 76 were QAQC samples inserted into the sampling stream at
regular intervals. The QAQC samples consisted of 29 CRM's, 26 Blanks and 21
laboratory duplicates. The majority of QAQC samples returned satisfactory
results consistent with industry standards, 1 CRM returned slightly lower and
3 Blanks slightly higher (above average) results, these are being investigated
but are not considered material. The overall QAQC of the Mont Agoma drilling
programme is acceptable and within standard norms.

 

Dr Vermaakt reviews all the sampling procedures on an on-going basis.

 

Glossary

 

 Cu:       The chemical element for copper

 Gossan:   Weathered near-surface zone, generally presenting difficult drilling

         conditions

 Km:       Kilometres (Metric)

 m:        Metres (Metric)

 XRF:      A portable x-ray fluorescence analyser

 Sn:       The chemical element for tin

 Zn:       The chemical element for zinc

 

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