TIDMADT1

RNS Number : 1631T

Adriatic Metals PLC

13 November 2023

13 November 2023

Adriatic Metals PLC

("Adriatic Metals" or the "Company")

RUPICE NORTHWEST DEPOSIT

EXPLORATION UPDATE

HIGHLIGHTS

-- Exploration drilling not included in the July 2023 Rupice Northwest ('RNW') Mineral Resource Estimate ('MRE') has successfully expanded the deposit westward.

-- Infill drilling has continued converting mineralization from Inferred to Indicated levels of resource confidence, enhancing mineralization grades and widths on sections.

-- A higher drilling density of 25m between holes on sections with structural complexity improved the connectivity of high-grades and defined the Western Fault Zone ('WFZ').

-- RNW Lower Zone step-out drilling west of the WFZ returned significant high-grade gold and copper intercepts e.g., 4.3m at 2,544g/t AgEq or 95.0% ZnEq including 851g/t Ag, 32.5% Zn, 20.6% Pb, 9.1g/t Au, 1.8% Cu, 5% BaSO(4) , 0.3% Sb in hole BR-38-23.

-- RNW Main Zone infill drilling improved grades and widths in-between previously drilled holes e.g., 30m at 921g/t AgEq, 29.6% ZnEq including 346g/t Ag, 9.3% Zn, 5.5% Pb, 1.0g/t Au, 0.5% Cu, 66% BaSO (4) , 0.1% Sb in hole BR-53-23.

-- RNW Main Zone step-out drilling kept delivering significant widths up to and along the WFZ e.g., 12.7m @ 867g/t AgEq or 27.9% ZnEq including 285g/t Ag, 8.4% Zn, 6.5% Pb, 2.3g/t Au, 0.6% Cu, <1% BaSO 4 in hole BR-39-23.

-- Significant high-grade mineralization has been added on two drill sections only partially drilled at the time of the July 2023 RNW MRE.

-- The 2023 RNW exploration drilling program has been completed with additional final drilling results to be reported in December ahead of an updated RNW MRE expected in Q1 2024.

-- RNW drill rigs (3) have been reallocated to expand and infill drill the northern and southern extents of the Rupice deposit. Both areas are under-drilled and contain open-ended mineralization.

-- Regional exploration drilling across the Droskovac prospect has been successful in defining a continuous Fe-Pb-Zn-Ag sulphide zone below siderite (FeCO(3) ) mineralization. First returned assay results are awaiting QAQC validation.

Paul Cronin, Adriatic's Managing Director and CEO, commented:

"2023 exploration drilling across the Rupice Northwest ('RNW') deposit has been successfully completed, marking an outstanding year of rapid resource growth.

RNW has expanded westward and to the southeast, bringing it closer to the Rupice deposit and access to underground mining. High silver, zinc and lead grades continue at mineable widths with elevated gold and copper grades.

Systematic infill drilling also reports thickening of the deposit between pre-existing holes with grades equivalent or better in areas drilled than in equivalent parts of the MRE. This material increase in resources is in additional to the July 2023 Rupice MRE inventory and showcases the robust nature of the deposit and scope for ongoing growth.

Regionally, exploration drilling has focussed on the Droskovac-Brezik prospect. Early drilling is confirming a base metals zone beneath historic iron ore mining. Five holes have intersected continuous iron, lead, zinc, silver rich massive sulphide mineralization. An exciting project that will be accelerated in 2024."

Click on, or paste, the following link into your web browser to view the announcement in full:

http://www.rns-pdf.londonstockexchange.com/rns/1631T_1-2023-11-12.pdf

Presented below are select significant assay results from 15 of 20 RNW exploration drill holes completed since the July 2023 Rupice MRE announcement and subsequent Exploration Update on 16 August 2023. Four (4) drill holes (BR-40-23, BR-43-23, BR-44-23 and BR-45-23) were abandoned and redrilled due to ground conditions and hole deviation. Hole BR-51-23 did not hit significant mineralization at the extremity of the mineralized system on the section. Details of all 19 holes are appended.

Drillhole Highlights

RNW Extension (New Mineralization)

Drillhole BR-39-23 is located 130m northwest of the Rupice Mineral Resource ('RMR') and drilled up-dip of the previously reported hole BR-36-23 (15.2m @ 1,502g/t AgEq, 48.3% ZnEq). Drilling intercepted:

-- BR-39-23 (RNW Main Zone) - 12.7m @ 867g/t AgEq, 27.9% ZnEq (285g/t Ag, 8.4% Zn, 6.5% Pb, 2.3g/t Au, 0.6% Cu, <1.0% BaSO 4 , 0.3% Sb) from 164.0m ;

Drillhole BR-42-23 is located 130m northwest of the Rupice Mineral Resource ('RMR') and drilled up-dip of BR-39-23. The drill hole intercepted:

-- BR-42-23 (RNW Upper Zone) - 3.00m @ 348.0g/t AgEq, 11.19% ZnEq (214.7g/t Ag, 1.17% Zn, 0.53% Pb, 0.24g/t Au, 0.75% Cu, <1.0% BaSO 4 , 0.50% Sb) from 111.3m.

Drillhole BR-46-23 is located 55m northwest of the RMR and drilled up-dip of previously reported hole BR-34-23 (3.10m @ 530g/t AgEq, 17.0% ZnEq). The drill hole intercepted:

-- BR-46-23 (RNW Main Zone) - 9.30m @ 652.4g/t AgEq, 20.97% ZnEq (262.3g/t Ag, 4.14% Zn, 2.54% Pb, 0.70g/t Au, 0.56% Cu, 61.2% BaSO 4 , 0.66% Sb) from 123.70m.

RNW Lower Zone - Extension (New Mineralization)

Drillhole BR-37-23 is located 115m northwest of the Rupice Mineral Reserve ('RMR') and drilled down-dip of previously reported hole BR-30-23 (7.70m @ 596g/t AgEq, 19.2% ZnEq). The drill hole intercepted:

-- BR-37-23 (RNW Lower Zone) - 7.80m @ 843.9g/t AgEq, 27.13% ZnEq (316.8g/t Ag, 6.13% Zn, 4.88% Pb, 2.44g/t Au, 1.11% Cu, 3.6% BaSO 4 , 0.19% Sb) from 275.20m -

o including 3.70m @ 1,457.3g/t AgEq, 46.85% ZnEq (552.9g/t Ag, 9.83% Zn, 8.66% Pb, 4.55g/t Au, 1.87% Cu, 4.0% BaSO4, 0.26% Sb) from 275.20m .

Drillhole BR-38-23 is located within the GAP area, 55m northwest of the RMR and drilled down-dip of previously reported hole BR-34-23 (4.50m @ 745g/t AgEq, 23.9% ZnEq). The drill hole intercepted:

-- BR-38-23 (RNW Lower Zone) - 8.30m @ 1,625.5g/t AgEq, 52.26% ZnEq (479.0g/t Ag, 17.76% Zn, 11.11% Pb, 4.86g/t Au, 1.08% Cu, 3.7% BaSO 4 , 0.17% Sb) from 222.70m -

o including 4.30m @ 2,954.4g/t AgEq, 95.00% ZnEq (851.0g/t Ag, 32.48% Zn, 20.58% Pb, 9.11g/t Au, 1.84% Cu, 5.3% BaSO(4) , 0.25% Sb) from 222.70m .

Drillhole BR-39-23 is located 130m northwest of the RMR and drilled up-dip of previously reported hole

BR-36-23 (15.20m @ 1,502g/t AgEq, 48.3% ZnEq). The drill hole intercepted:

-- BR-39-23 (RNW Lower Zone) - 10.70m @ 387.1g/t AgEq, 12.44% ZnEq (111.8g/t Ag, 3.59% Zn, 4.53% Pb, 0.43g/t Au, 0.61% Cu, 1.9% BaSO 4 , 0.06% Sb) from 201.00m .

Drillhole BR-42-23 is located 130m northwest of the RMR and drilled up-dip of previously reported hole

BR-39-23 (10.70m @ 387.1g/t AgEq, 12.44% ZnEq). The drill hole intercepted:

-- BR-42-23 (RNW Lower Zone) - 4.60m @ 615.5g/t AgEq, 19.79% ZnEq (198.0g/t Ag, 3.50% Zn, 2.52% Pb, 2.62g/t Au, 0.58% Cu, 28.8% BaSO 4 , 0.03% Sb) from 218.00m -

o including 1.90m @ 1,363.0g/t AgEq, 43.82% ZnEq (471.8g/t Ag, 8.29% Zn, 4.85% Pb, 5.76g/t Au, 1.36% Cu, 46.2% BaSO(4) , 0.07% Sb) from 220.70m.

Drillhole BR-45A-23 is located 130m northwest of the RMR and drilled down-dip of currently reported hole BR-39-23 (10.70m @ 387.1g/t AgEq, 12.44% ZnEq). The drill hole intercepted:

-- BR-45A-23 (RNW Lower Zone) - 6.50m @ 573.4g/t AgEq, 18.43% ZnEq (277.5g/t Ag, 2.71% Zn, 2.51% Pb, 1.45g/t Au, 0.82% Cu, 7.7% BaSO 4 , 0.18% Sb) from 235.50m .

RNW - Infill (Resource Definition)

Drillhole BR-37-23 is located 115m northwest of the RMR. Drilling infilled between previously reported drill holes BR-30-23 (33.40m @ 1,197g/t AgEq, 38.5% ZnEq) and BR-27-22 (15.80m at 1,486.3g/t AgEq, 47.79% ZnEq) respectively. The drill hole intercepted: -

-- BR-37-23 (RNW Upper Zone) - 7.20m @ 191.5g/t AgEq, 6.15% ZnEq (70.1g/t Ag, 1.40% Zn, 0.71% Pb, 0.49g/t Au, 0.10% Cu, 8.7% BaSO 4 , 0.20% Sb) from 116.40m ;

-- BR-37-23 (RNW Main Zone) - 25.20m @ 1,281.2g/t AgEq, 41.19% ZnEq (359.0g/t Ag, 14.41% Zn, 8.89% Pb, 2.75g/t Au, 1.77% Cu, 10.2% BaSO 4 , 0.14% Sb) from 217.90m -

o including 12.15m @ 2,177.8g/t AgEq, 70.02% ZnEq (666.4g/t Ag, 24.94% Zn, 14.43% Pb, 5.23g/t Au, 1.84% Cu, 18.2% BaSO(4) , 0.20% Sb) from 219.25m .

-- BR-37-23 (RNW Main Zone) - 10.00m @ 819.1g/t AgEq, 26.33% ZnEq (309.2g/t Ag, 3.96% Zn, 4.87% Pb, 3.42g/t Au, 0.78% Cu, 6.0% BaSO 4 , 0.09% Sb) from 248.00m .

Drillhole BR-38-23 is located within the GAP area, 55m northwest of the RMR. Drilling infilled between previously and currently reported drill holes BR-09-23 (16.60m at 327.1g/t AgEq, 10.52% ZnEq) and BR-41-22 (17.20m at 233.0 g/t AgEq, 7.49% ZnEq) respectively. Drilling intercepted:

-- BR-38-23 (RNW Main Zone) - 11.90m @ 458.8g/t AgEq, 14.75% ZnEq (153.0g/t Ag, 4.21% Zn, 3.37% Pb, 0.86g/t Au, 0.45% Cu, 2.6% BaSO(4) , 0.38% Sb) from 153.80m .

-- BR-38-23 (RNW Main Zone) - 13.50m @ 1,040.1g/t AgEq, 33.45% ZnEq (622.6g/t Ag, 5.65% Zn, 3.89% Pb, 1.97g/t Au, 0.83% Cu, 6.5% BaSO(4) , 0.27% Sb) from 191.50m.

Drillhole BR-40A-23 is located 115m northwest of the RMR. Drilling infilled between previously reported drill holes BR-20-22 (30.30m at 932.0 g/t AgEq, 30.00% ZnEq) and BR-23-22 (28.90m at 695.0 g/t AgEq, 22.30% ZnEq) respectively. Drilling intercepted:

-- BR-40A-23 (RNW Upper Zone) - 12.10m @ 171.2g/t AgEq, 5.50% ZnEq (79.1g/t Ag, 0.73% Zn, 1.00% Pb, 0.19g/t Au, 0.14% Cu, 7.0% BaSO(4) , 0.27% Sb) from 105.10m -

-- BR-40A-23 (RNW Main Zone) - 30.70m @ 908.1g/t AgEq, 29.23% ZnEq (294.0g/t Ag, 9.41% Zn, 6.33% Pb, 1.20g/t Au, 0.43% Cu, 68.2% BaSO(4) , 0.07% Sb) from 223.00m -

o including 6.00m @ 1,456.3g/t AgEq, 46.82% ZnEq (930.3g/t Ag, 8.99% Zn, 5.31% Pb, 1.35g/t Au, 0.24% Cu, 75.8% BaSO4, 0.07% Sb) from 228.00m ;

o including 8.70m @ 1,077.1g/t AgEq, 34.63% ZnEq (165.3g/t Ag, 14.93% Zn, 10.99% Pb, 1.44g/t Au, 0.97% Cu, 47.3% BaSO(4) , 0.13% Sb) from 245.00m.

Drillhole BR-41-23 is located 115m northwest of the RMR. Drilling infilled between currently and previously reported drill holes BR-38-23 (13.50m @ 1,040.1g/t AgEq, 33.45% ZnEq) and BR-34-23 (4.50m @ 745g/t AgEq, 23.9% ZnEq) respectively. Drilling intercepted:

-- BR-41-23 (RNW Main Zone) - 17.20m @ 233.0g/t AgEq, 7.49% ZnEq (78.1g/t Ag, 1.32% Zn, 1.16% Pb, 0.43g/t Au, 0.59% Cu, 7.1% BaSO(4) , 0.17% Sb) from 154.50m.

Drillhole BR-43A-23 is located 115m northwest of the RMR. Drilling infilled between currently reported drill holes BR-38-23 (11.9m @ 458.8g/t AgEq, 14.75% ZnEq) and BR-09-23 (11.8m @ 1,212g/t AgEq, 39% ZnEq) respectively. Drilling intercepted:

-- BR-43A-23 (RNW Main Zone) - 11.10m @ 359.5g/t AgEq, 11.56% ZnEq (207.2g/t Ag, 1.79% Zn, 1.46% Pb, 0.51g/t Au, 0.06% Cu, 5.4% BaSO4, 0.52% Sb) from 206.50m.

Drillhole BR-44A-23 is located 115m northwest of the RMR. Drilling infilled between previously reported drill holes BR-20-22 (30.30m at 932.0 g/t AgEq, 30.00% ZnEq) and BR-09-22 (28.90m at 695.0 g/t AgEq, 22.30% ZnEq) respectively. Drilling intercepted:

-- BR-44A-23 (RNW Main Zone) - 21.60m @ 934.5g/t AgEq, 30.04% ZnEq (194.6/t Ag, 13.47% Zn, 6.56% Pb, 1.35g/t Au, 0.76% Cu, 45.7% BaSO(4) , 0.06% Sb) from 208.40m -

o including 8.10m @ 905.0g/t AgEq, 29.10% ZnEq (264.4g/t Ag, 11.34% Zn, 5.50% Pb, 1.35g/t Au, 0.29% Cu, 61.3% BaSO(4) , 0.04% Sb) from 208.40m ;

o including 6.90m @ 1,331.1g/t AgEq, 42.80% ZnEq (214.9g/t Ag, 21.39% Zn, 10.91% Pb, 1.88g/t Au, 1.33% Cu, 31.4% BaSO(4) , 0.11% Sb) from 220.50m .

Drillhole BR-45A-23 is located 130m northwest of the RMR. Drilling infilled between currently and previously reported drill holes BR-39-23 (12.70m @ 866.6g/t AgEq, 27.86% ZnEq) and BR-36-23 (15.20m @ 1,502g/t AgEq, 48.3% ZnEq) respectively. Drilling intercepted:

-- BR-45A-23 (RNW Main Zone) - 21.10m @ 466.2g/t AgEq, 14.99% ZnEq (204.1g/t Ag, 2.41% Zn, 2.17% Pb, 1.21g/t Au, 0.61% Cu, 9.2% BaSO(4) , 0.25% Sb) from 166.00m -

o including 2.70m @ 2,243.5g/t AgEq, 72.14% ZnEq (1201.4g/t Ag, 7.52% Zn, 10.07% Pb, 7.31g/t Au, 1.25% Cu, 49.2% BaSO(4) , 0.34% Sb) from 166.70m.

-- BR-45A-23 (RNW Main Zone) - 4.40m @ 502.8g/t AgEq, 16.16% ZnEq (125.9g/t Ag, 6.46% Zn, 4.03% Pb, 0.85g/t Au, 0.66% Cu, 1.3% BaSO(4) , 0.07% Sb) from 221.90m.

Drillhole BR-47-23 is located 115m northwest of the RMR. Drilling infilled between previously reported drill holes BR-23-22 (28.90m at 695.0 g/t AgEq, 22.30% ZnEq) and BR-26-22 (21.10m at 527.5 g/t AgEq, 16.96% ZnEq) respectively. Drilling intercepted:

-- BR-47-23 (RNW Main Zone) - 30.60m @ 843.1g/t AgEq, 27.11% ZnEq (306.7g/t Ag, 8.35% Zn, 5.18% Pb, 0.93g/t Au, 0.45% Cu, 66.3% BaSO(4) , 0.07% Sb) from 243.20m -

o including 9.60m @ 864.2g/t AgEq, 27.79% ZnEq (513.1g/t Ag, 4.49% Zn, 3.60% Pb, 0.65g/t Au, 0.18% Cu, 78.2% BaSO(4) , 0.05% Sb) from 249.40m ;

o including 3.00m @ 1,106.2g/t AgEq, 35.57% ZnEq (192.6g/t Ag, 15.34% Zn, 11.15% Pb, 1.60g/t Au, 0.73% Cu, 47.4% BaSO(4) , 0.06% Sb) from 263.80m ;

o including 3.40m @ 1,418.9g/t AgEq, 45.62% ZnEq (215.1g/t Ag, 22.20% Zn, 11.90% Pb, 1.73g/t Au, 1.95% Cu, 29.5% BaSO(4) , 0.27% Sb) from 269.30m.

Drillhole BR-48-23 is located 130m northwest of the RMR. Drilling infilled between previously reported drill holes BR-16-23 (8.20m @ 527.9g/t AgEq, 16.97% ZnEq) and BR-12-22 (12.3m at 797 g/t AgEq, 25.6% ZnEq) respectively. Drilling intercepted:

-- BR-48-23 (RNW Upper Zone) - 4.60m @ 149.9g/t AgEq, 4.82% ZnEq (73.2g/t Ag, 0.40% Zn, 0.38% Pb, 0.29g/t Au, 0.24% Cu, 7.4% BaSO(4) , 0.17% Sb) from 80.20m ;

-- BR-48-23 (RNW Main Zone) - 20.70m @ 848.9g/t AgEq, 27.29% ZnEq (195.6g/t Ag, 10.75% Zn, 6.70% Pb, 1.52g/t Au, 0.94% Cu, 21.7% BaSO(4) , 0.08% Sb) from 180.50m -

o Including 7 .90m @ 1,329.9g/t AgEq, 42.76% ZnEq (293.6g/t Ag, 18.92% Zn, 9.54% Pb, 2.60g/t Au, 0.79% Cu, 42.2% BaSO(4) , 0.08% Sb) from 182.50m ;

o including 6.30m @ 819.6g/t AgEq, 26.35% ZnEq (202.3g/t Ag, 9.41% Zn, 6.97% Pb, 1.11g/t Au, 1.60% Cu, 6.3% BaSO(4) , 0.14% Sb) from 192.60m .

Drillhole BR-49-23 is located within the GAP area, 55m northwest of the RMR. Drilling infilled between currently and previously reported drill holes BR-09-23 (4.80m @ 355.6g/t AgEq, 11.43% ZnEq) and BR-04-23 (2.90m @ 1,429.5g/t AgEq, 45.96% ZnEq) respectively. Drilling intercepted:

-- BR-49-23 (RNW Main Zone) - 6.30m @ 644.8g/t AgEq, 20.73% ZnEq (269.4g/t Ag, 2.71% Zn, 3.12% Pb, 2.23g/t Au, 0.28% Cu, 40.7% BaSO(4) , 0.08% Sb) from 200.90m.

Drillhole BR-53-23 is located 180m northwest of the RMR. Drilling infilled between previously reported drill holes BR-32-22 (23.00m @ 577.5 g/t AgEq, 18.57% ZnEq) and BR-29-22 (33.40m @ 662.7 g/t AgEq, 21.31% ZnEq) respectively. Drilling intercepted:

-- BR-53-23 (RNW Main Zone) - 10.00m @ 82.90g/t AgEq, 2.66% ZnEq (37.7g/t Ag, 0.86% Zn, 0.36% Pb, 0.08g/t Au, 0.07% Cu, <1.0% BaSO(4) , 0.05% Sb) from 211.00m .

-- BR-53-23 (RNW Main Zone) - 18.20m @ 143.2g/t AgEq, 4.60% ZnEq (77.1g/t Ag, 1.42% Zn, 0.39% Pb, <0.01g/t Au, <0.01% Cu, 8.5% BaSO(4) , 0.13% Sb) from 232.80m .

-- BR-53-23 (RNW Main Zone) - 6.00m @ 82.9g/t AgEq, 2.66% ZnEq (55.1g/t Ag, 0.79% Zn, 0.18% Pb, <0.01g/t Au, <0.01% Cu, 2.6% BaSO(4) , 0.02% Sb) from 261.00m .

-- BR-53-23 (RNW Main Zone) - 30.00m @ 921.0g/t AgEq, 29.61% ZnEq (346.3g/t Ag, 9.29% Zn, 5.51% Pb, 1.01g/t Au, 0.45% Cu, 65.9% BaSO(4) , 0.11% Sb) from 275.40m -

o including 5.00m @ 1,925.1g/t AgEq, 61.90% ZnEq (1615.0g/t Ag, 3.41% Zn, 3.34% Pb, 1.61g/t Au, 0.62% Cu, 77.2% BaSO(4) , 0.12% Sb) from 278.00m ;

o including 5.40m @ 1215.8g/t AgEq, 39.09% ZnEq (138.5g/t Ag, 18.28% Zn, 13.93% Pb, 1.31g/t Au, 1.12% Cu, 41.5% BaSO(4) , 0.28% Sb) from 299.00m .

RUPICE NORTHWEST EXPLORATION results

Adriatic Metals PLC (ASX:ADT, LSE:ADT1, OTCQX:ADMLF) ("Adriatic" or the "Company") is pleased to report on recent exploration results at the Company's flagship Vares Silver Project in Bosnia & Herzegovina.

As previously announced on the 16 August 2023, exploration drilling intersected high-grade mineralization in drill holes BR-30-23, BR-31B-23, BR-32-23, BR-33A-23, BR-34-23, BR-35-23 and BR-36-23 from across RNW. These holes were located 55m to 280m northwest of the existing RMR. Subsequently, the Company has focused exploration activities on further extending and infilling RNW with continued success.

Details within this announcement are from twenty (20) new drill holes BR-37-23, BR-38-23, BR-39-23, BR-40-23, BR-40A-23, BR-41-23, BR-42-23, BR-43-23, BR-43A-23, BR-44-23, BR-44A-23, BR-45-23, BR-45A-23, BR-46-23, BR-47-23, BR-48-23, BR-49-23, BR-51-23, BR-53-23 and BR-55-23. Significant assay results are detailed from fifteen (15) of the drill holes - BR-37-23, BR-38-23, BR-39-23, BR-40A-23, BR-41-23, BR-42-23, BR-43A-23, BR-44A-23, BR-45A-23, BR-46-23, BR-47-23, BR-48-23, BR-49-23, BR-53-23 and BR-55-23. Drill holes BR-40-23, BR-43-23, BR-44-23, BR-45-23 are abandoned and contain no significant assays. Hole BR-51-23 was completed without intercepting any significant mineralization.

Results represent drilling from four (4) drill sections being extended westward and infill drilled between existing holes to an Indicated resource level of confidence. Multiple mineralized bodies are intersected including RNW Upper Zone, Main Zone and Lower Zone. For clarity of reporting, significant assays are reported as being 'infill' (resource definition) or 'extension' (step-out). Infill holes include BR-37-23, BR-38-23, BR-40A-23, BR-41-23, BR-43A-23, BR-44A-23, BR-45A-23, BR-47-23, BR-48-23, BR-49-23 and BR-53-23. Extension holes include BR-39-23, BR-42-23, BR-46-23 and BR-55-23.

Section NW4960 (RNW)

Hole BR-53-23 was successful in infilling between holes BR-29-22 and BR-32-22, confirming the mineralization spatial and grade continuity. Grades and thickness were higher than in adjacent holes. The hole confirmed a series of stacked base metal horizons on the hanging wall of the Main Zone previously defined in holes either side of BR-53-23. Outcomes support an Indicated resource level of confidence.

Section NW4880 (RNW)

Hole BR-37-23 twinned hole BR-30-23, infilling between previously reported drillholes BR-30-23 and BR-27-23. The hole infilled the RNW Main Zone along with RNW Lower Zone, confirming that mineralization had been folded into an antiform abutting the Western Fault Zone ('WFZ') and offset to the west.

Holes BR-40A-23, BR-44A-23 and BR-47-23 infilled and confirmed mineralization continuity and high grade between previously drilled, widely spaced holes in the barite and sulphide rich 'Main Zone' of RNW. Mineralization is now at an Indicated resource level of confidence.

Section NW4840 (RNW)

Six (6) holes were completed on this key section since the last exploration announcement. Holes BR-39-23 (step-out), BR-42-23 (infill), BR-45A-23 (infill), BR-48-23 (infill) and BR-55-23 (infill) confirmed mineralization continuity and high grade between previously drilled, widely spaced holes to an Indicated resource level of confidence.

Hole BR-45A-23 twinned hole BR-39-23, infilling between currently and previously reported drillholes BR-39-23 and BR-36-23 respectively. The hole closed a gap in the RNW Main Zone along with RNW Lower Zone and confirmed that mineralization had been folded into an antiform abutting the Western Fault Zone ('WFZ').

Hole BR-42-23 extended mineralization westward by 58m up-dip and to the southwest. Hole BR-51-23 drilled 35m up dip from BR-42-23 without intersecting any significant mineralized interval. Mineralization in the redomained Lower Zone narrows to only a few metres, is generally massive sulphide at significant grades e.g. BR-42-23 reporting 198.0g/t Ag, 3.50% Zn, 2.52% Pb, 2.62g/t Au, 0.58% Cu, 28.8% BaSO 4 , 0.03% Sb.

Section NW4800 (RNW)

This is the current best-drilled section closest to the RMR and is within the area referred to as the Rupice-RNW GAP. Rupice and RNW are interpreted to overlap across this area. Holes BR-38-23 (infill), BR-41-23 (infill), BR-43A-23 (infill) and BR-49-23 (infill) confirm mineralization continuity and high grade between previously drilled, widely spaced holes to an Indicated resource level of confidence. Close-spaced drilling confirms mineralization to have been folded into an antiform abutting the WFZ.

Hole BR-46-23 extended RNW Upper Zone mineralization 28m up-dip from previously reported drillhole BR-34-23. The significant mineralization is interpreted to be associated with the WFZ and being stratabound.

Figure 1: Plan view of Rupice and location of drill collars from recent drilling activity

Note 1: Sections A-A', B-B', C-C' and D-D' offset to southeast of section lines to not obscure drill holes traces.

2023 Exploration Works

Currently reported assays will be included in an updated 2023 Rupice resource estimate which is expected in Q1 2024. Final assays from 2023 RNW drilling to be included in MRE update will be reported in December 2023.

Focus in Q4 2023 has been to complete the 2023 drilling campaign at RNW. This has been achieved with successful addition of a further section of drilling added at the southeastern end of RNW (waiting on assay return) bringing RNW further into overlap with Rupice. Definition of the WFZ and the splitting of mineralization into coherent RNW Main (east of WFZ) and Lower Zones (west of WFZ) has been achieved. Outcomes from the improved structural definition will translate into a more continuous distribution of mineralization, greater tonnage and grade consistency in the next update of the RNW MRE.

Conversion of the majority of RNW mineralization from an Inferred to Indicated level of risk has been achieved, improving on an already high percentage of Indicated level mineralization reported in the July 2023 Rupice MRE. A minor percentage of Inferred level mineralization remains at the peripheries of RNW and in areas where due to unavailability of suitable drilling platforms, windows of Inferred mineralization will remain for future conversion.

As of November, three (3) diamond drill rigs are focused on Rupice Main into 2024. Drilling on Rupice Main is focussed on the northern and southern extremities of mineralization remaining to be infilled and extended. Areas being drilled are dominantly Inferred resource in the July 2023 Rupice MRE with opportunity for extension up-dip and down-dip. Diamond drilling aims to achieve a nominal 40m x 30m mineralized intercept spacing between holes. The same disciplined and systematic drilling methodology successfully adopted at RNW will be continued across Rupice. Early results from drilling suggest greater mineralization and grade continuity in areas drilled, with stratigraphic and structural controls being better defined.

Diamond drilling across the Droskovac prospect was commenced in August, continued through Q3 and into Q4 with one drill rig. Five drill holes have been completed. The drilling has been successful in intersecting a zone of pyrite hosted base and precious metals below the historic Droskovac siderite iron orebody. pXRF results confirm significant results for Fe, Ag, Pb, Zn and Cu. First external assay results have been received and are being validated. Detailed outcomes from Droskovac will be released once all assays have been received, validated, interpreted and placed into geological context. The opportunity of Droskovac being revived as both an underground iron, base and precious metals project is being reviewed. Significant thicknesses of high-grade iron occurring as siderite (FeCO(3) ) have been intersected above the base and precious metals zone intersected in Adriatic Metals drill holes.

Extensive planning for 2024 was in progress in Q3 and continues through Q4. The major focus in the Vares district for 2024 remain the expansion RNW, Rupice and developing the Droskovac project to a first resource estimate stage. Greenfields project advancement is also planned at Brezik (extension of Droskovac) and Vares East. A return for further follow-up of 2023 exploration outcomes at Rupice West and Semizova Ponikva is also planned.

Supporting all work is the current active involvement of technical specialists in the understanding and definition of lithogeochemisty, structural, geophysical and basin-analysis (sedimentology) research. The work is commissioned to pull together a detailed knowledge of mine-scale and regional scale controls on mineralization working together with the Adriatic Metals Exploration team. Scott Halley (MinMap) is retained for ongoing lithogechemical modelling; Elizabeth Thompson (Transition Elements) for structural synthesis; David McInnes (Montana Geoscience) for geophysics; and Petrostrat (UK) has completed a scope of work for defining the Rupice regional sedimentary basin model. Specialist knowledge growth is also supported through partnerships with regional Universities providing MSc students focused on characterizing mineralization styles and controls at the mine-scale.

Moving into 2024, the Exploration team are gearing up to implement hyperspectral logging, linked to AI processed spectral, lidar and lithogeochemical analysis, coupled with onsite digital ore microscopy. A merging of technologies to interpret faster bigger, more complex data sets to drive the discovery of new opportunities.

Figure 2: Regional geology & tenement map of current and future exploration areas

q

Figure 3: Cross-section (A-A') through BR-53-23

Figure 4: Cross-section (B-B') through BR-37-23, BR-40A-23, BR-44-23 and BR-47-23

Figure 5: Cross-section (C-C') through BR-39-23, BR-42-23, BR-45A-23, BR-48-23, BR-51-23 and BR-55-23

Figure 6: Cross-section (D-D') through BR-38-23, BR-41-23, BR-43A-23, BR-46-23 and BR-49-23

Figure 7: Long-section of Rupice looking southwest.

-ends-

MARKET ABUSE REGULATION DISCLOSURE

The information contained within this announcement is deemed by the Company (LEI: 549300OHAH2GL1DP0L61) to constitute inside information for the purposes of Article 7 of the Market Abuse Regulation (EU) No 596/2014 as it forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018 as amended ("UK MAR"), and Article 7 of the Market Abuse Regulation (EU) No. 596/2014 ("EU MAR"). The person responsible for arranging and authorising the release of this announcement on behalf of the Company is Paul Cronin, Managing Director and CEO.

Authorised by Paul Cronin, Managing Director & CEO

For further information please visit: www.adriaticmetals.com ; email: info@adriaticmetals.com , @AdriaticMetals on Twitter; or contact:

 
 Adriatic Metals PLC 
 Paul Cronin / Klara Kaczmarek               Via Buchanan 
 
 Buchanan                                    Tel: +44 (0) 20 7466 
                                              5000 
 Bobby Morse / Oonagh Reidy                  adriatic@buchanan.uk.com 
 Morgans Corporate Limited 
 Rob Douglas / Sam Warriner / Mitch Duffy    Tel: +61 7 3334 4888 
 
 RBC Capital Markets 
 James Agnew / Jamil Miah                    Tel: +44 (0) 20 7653 
                                              4000 
 
 Stifel Nicolaus Europe Limited 
 Ashton Clanfield / Callum Stewart / Varun   Tel: +44 (0) 20 7710 
  Talwar                                      7600 
 
 Citadel Magnus 
 Cameron Gilenko                             Tel: +61 2 8234 0100 
 

COMPETENT PERSONS REPORT

The information in this report which relates to exploration results is based on and fairly represents information and supporting documentation compiled by Mr Sergei Smolonogov, who is a member of the Australian Institute of Geoscientists (AIG). Mr Smolonogov is an employee of Adriatic Metals PLC and has sufficient experience relevant to the style of mineralization and type of deposit under consideration and to the activity he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the "Australian Code of Reporting of Exploration Results, Mineral Resources and Ore Reserves". Mr Smolonogov consents to the inclusion in this report of the matters based on that information in the form and context in which it appears.

ABOUT ADRIATIC METALS

Adriatic Metals PLC (ASX:ADT, LSE:ADT1, OTCQX:ADMLF) is a precious and base metals developer that is advancing the world-class Vares Silver Project in Bosnia & Herzegovina, as well as the Raska Zinc-Silver Project in Serbia.

The Vares Silver Project is fully funded to production, which is expected in January 2023. The 2021 Project Definitive Feasibility Study shows robust economics of US$1,062 million post-tax NPV(8) , 134% IRR and a capex of US$168 million. Concurrent with ongoing construction activities, the Company continues to explore across its highly prospective 44km(2) concession package.

The Mineral Resource estimate for the Rupice underground deposit comprising part of the Vares Silver Project was updated in accordance with ASX Listing Rule 5.8 on 27 July 2023. The Company confirms that it is not aware of any new information or data that materially affects the information included in the previous announcement and that all material assumptions and technical parameters underpinning the estimate in the previous announcement continue to apply and have not materially changed.

The Ore Reserve estimate for the Rupice deposit comprising part of the Vares Silver Project was announced in accordance with ASX Listing Rule 5.9 on 19 August 2021. The Company confirms that it is not aware of any new information or data that materially affects the information included in the previous announcement and that all material assumptions and technical parameters underpinning the estimate in the previous announcement continue to apply and have not materially changed.

In accordance with ASX Listing Rule 5.19, the Company confirms that the production targets and forecast financial information for the Vares Project were first disclosed in accordance with ASX Listing Rules 5.16 and 5.17 in the Company's announcement dated 19 August 2021. The Company confirms that all the material assumptions underpinning the production target and the forecast financial information in the previous announcement continue to apply and have not materially changed.

DISCLAIMER

Forward-looking statements are statements that are not historical facts. Words such as "expect(s)", "feel(s)", "believe(s)", "will", "may", "anticipate(s)", "potential(s)"and similar expressions are intended to identify forward-looking statements. These statements include, but are not limited to statements regarding future production, resources or reserves and exploration results. All of such statements are subject to certain risks and uncertainties, many of which are difficult to predict and generally beyond the control of the Company, that could cause actual results to differ materially from those expressed in, or implied or projected by, the forward-looking information and statements. These risks and uncertainties include, but are not limited to: (i) those relating to the interpretation of drill results, the geology, grade and continuity of mineral deposits and conclusions of economic evaluations, (ii) risks relating to possible variations in reserves, grade, planned mining dilution and ore loss, or recovery rates and changes in project parameters as plans continue to be refined, (iii) the potential for delays in exploration or development activities or the completion of feasibility studies, (iv) risks related to commodity price and foreign exchange rate fluctuations, (v) risks related to failure to obtain adequate financing on a timely basis and on acceptable terms or delays in obtaining governmental approvals or in the completion of development or construction activities, and (vi) other risks and uncertainties related to the Company's prospects, properties and business strategy. Our audience is cautioned not to place undue reliance on these forward-looking statements that speak only as of the date hereof, and we do not undertake any obligation to revise and disseminate forward-looking statements to reflect events or circumstances after the date hereof, or to reflect the occurrence of or non-occurrence of any events.

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(END) Dow Jones Newswires

November 13, 2023 02:00 ET (07:00 GMT)

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