Rockfire Resources (LSE:ROCK) has reported new assay results from its wholly owned Molaoi zinc deposit in Greece, including an 11-metre mineralised interval grading 5.0% zinc.
The results were obtained from diamond drill hole HMO-021, which also contained a shorter interval recording the highest zinc grade reported at the project to date.
The company said the drilling identified broader zones of zinc mineralisation, alongside silver and germanium, providing additional geological information for its ongoing resource assessment.
Rockfire is conducting further drilling at Molaoi to improve confidence in the deposit’s mineral resource estimate, with the objective of upgrading portions of the existing resource from the Inferred to the Indicated category.
The company is also preparing its maiden JORC-compliant Inferred mineral resource estimate for germanium, a potential by-product of future zinc production.
The latest assay results will contribute to the geological assessment of the deposit, although the company has not announced a revised zinc resource estimate or quantified the additional tonnage attributable to the new drilling.
Rockfire also reported progress in expanding its drilling capacity, having brought forward the delivery of a new Epiroc drilling rig to Athens.
The company intends to maintain continuous drilling operations while the additional equipment completes customs clearance, certification and registration procedures.
Meanwhile, drilling continues at hole HMO-022, where preliminary readings from a portable X-ray fluorescence (XRF) analyser have indicated further mineralisation.
These readings are preliminary and will require laboratory assay confirmation before they can be treated as verified analytical results.
Rockfire has also commissioned a drone-based magnetic survey at Molaoi to collect additional geological data and assist with identifying mineralised structures.
The survey forms part of the company’s broader exploration programme aimed at improving its understanding of the deposit and supporting future resource development.
Molaoi contains zinc, lead, silver and germanium mineralisation and is Rockfire’s principal exploration asset in Greece.
The company also holds gold, copper and silver exploration interests in Queensland, Australia, including the Plateau and Marengo projects, which are subject to farm-in agreements.
For investors, the latest drilling results provide further evidence of zinc mineralisation at Molaoi, including a project-record grade, while the resource upgrade programme remains ongoing.
The potential significance of the new intercepts will depend on their contribution to the overall mineral resource, including the continuity, extent and classification of the mineralised zones.
The planned germanium resource estimate represents another development to monitor, although the presence of germanium does not establish its economic recoverability.
Looking ahead, key milestones include additional laboratory assays, results from hole HMO-022, completion of the germanium resource estimate and progress towards upgrading the existing Molaoi resource classification.