Molaoi Update

Rockfire Resources PLC

03 September 2026

 

3 September 2026

Rockfire Resources plc

("Rockfire" or the "Company")

Molaoi Update

Rockfire Resources plc (LON: ROCK), the base metal, critical mineral and precious metal exploration company, is pleased to provide an update of activities from the Company's 100%-owned Molaoi zinc deposit in Greece.

Highlights

·      Diamond drilling recommenced on schedule after the summer vacation and hole HMO-021 remains in progress.

·      Preliminary results from the comminution test work have been received from SLR Consulting. The result measures the Molaoi ore as 'Medium-Hard' with a Drop Weight Index ("DWi") of 8.66 kWh/t. Semi-Autogenous Grinding ("SAG") mills typically draw anywhere from 6 kWh/t to 12 kWh/t of energy to grind the rock. The Molaoi ore energy requirement sits well within the standard energy consumption range for global mining projects.

·      Rockfire has had an update from Epiroc regarding the arrival of Rockfire's own drilling rig with the rig expected slightly behind schedule, with arrival in Athens due at the end of October/early November 2026.

·      The Company has commenced interviewing experienced drillers to join Rockfire's subsidiary, Hellenic Minerals S.A. and has also made good progress with identifying and securing drilling assistants in preparation for drilling later in the year.

Drill hole location map within the Molaoi Licence.

David Price, Chief Executive Officer of Rockfire, commented:

"Preliminary results from the comminution test work have been received from SLR Consulting. The results show that the Molaoi ore is categorised as 'Medium Hard' in the 'Steve Morrell Comminution' ("SMC") test. Dr. Steve Morrell is a British National from the Imperial College London who developed a unique laboratory test for mineral processing which measures rock strength and ore hardness.

The result of the SMC test is used to determine the DWi, which is a measure of the strength of the rock when broken under impact conditions and has the units kWh/t. Around 99% of DWi values from global mining projects lie in the range 0.5 kWh/t (soft ore) to 14.0 kWh/t (hard ore), with Molaoi having a DWi of 8.66 kWh/t.

Rockfire is considering the option of a SAG mill, rather than a conventional ball mill. SAG mills rely on the rock impacting against itself inside a rotating mill, whereas ball mills rely on the introduction of expensive and high-wear steel balls, resulting in SAG mills having materially cheaper operating costs.

SAG mills typically draw anywhere from 6 kWh/t to 12 kWh/t of energy to grind the rock to a fine powder. From these results, These preliminary results indicate that the Molaoi energy requirement to grind the ore sits well within the standard energy consumption range. These tests and the resulting knowledge about the ore and the grinding characteristics and costs feed directly into the flowsheet for processing are expected to form the framework for feasibility parameters.

The market will continue to be informed and updated as we advance the Molaoi Project."

For further information on the Company, please visit www.rockfireresources.com or contact the following:

Rockfire Resources plc	E-mail: [e-mail]
David Price, Chief Executive Officer
Allenby Capital Limited (Nominated Adviser & Broker):	Tel: [phone]
John Depasquale / Ashur Joseph (Corporate Finance)
Matt Butlin / Kelly Gardiner (Sales and Corporate Broking)
CMC Markets UK Plc (Joint Broker)	Tel: [phone]
Douglas Crippen
Oak Securities (Joint Broker)	Tel: [phone]
Jerry Keen / Robert Bell

Qualified Person Statement

The technical information in this announcement is based on information compiled by Mr David Price, the Chief Executive Officer of Rockfire Resources plc, who is a Fellow of the Australasian Institute of Mining and Metallurgy (F.AusIMM). Mr Price has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which has been undertaken to qualify as a "Qualified Person" in accordance with the AIM Rules Guidance Note for Mining and Oil & Gas Companies. Mr Price consents to the inclusion in the announcement of the matters based on their information in the form and context in which it appears.

Glossary

Item	Definition
"3D"	three dimensional
'' Ag'' "Au"	Silver Gold
"Cu" "Ga"	Copper Gallium
'' Ge''	Germanium
'' g/t''	grams per tonne
''JORC''	Joint Ore Resource Committee
"km"	Kilometre
"m" "Ni"	Metre Nickel
'' Pb''	Lead
"ppm"	parts per million
"pXRF"	portable X-Ray Florescence
"VMS"	volcanogenic massive sulphide
''' Zn''	Zinc
"ZnEq''	zinc equivalent

Notes to Editors

Rockfire Resources plc (LON: ROCK) is a gold, base metal and critical mineral exploration company, with a high-grade zinc/lead/silver/germanium deposit in Greece and a portfolio of gold/copper/silver projects in Queensland Australia.

·      The Molaoi deposit in Greece has a JORC Inferred Mineral Resource of 15.0 million tonnes @ 7.26% Zn, 1.75% Pb and 39.50g/t Ag, for 1.5 million tonnes of ZnEq. metal. This resource uses a 4% low-grade cut, and equates to 1.09 million tonnes of zinc, 260,000 tonnes of lead and 19.1 million ounces of silver. Molaoi is also reported under the UNFC Code with classification E2, F2.1, G3 for Zn, Ag, and Pb, and E3.2, F3.1, G4.1 for Ge.

·      The Plateau deposit in Queensland has a JORC Inferred Resource of 131,000 ounces of gold and 800,000 ounces of silver, using a 0.5g/t Au cut off. 53,000 of these ounces lie within the top 100m from surface. Plateau is subject to a farm-in by ASX-listed Sunshine Metals Ltd (ASX:SHN).

·      The Marengo prospect in Queensland hosts high-grade gold, silver and copper within an historic goldfield, which is entirely under licence by Rockfire. Marengo is subject to a farm-in by ASX-listed Eastern Resources Ltd (ASX:EFE).

 

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