Oceana Metals is launching a major drilling and re-assaying campaign at its Serra Negra Rare Earths Project in Brazil, aiming for an initial resource estimate later in 2026.
- 20,000m drilling program to map rare earth mineralisation
- Re-assaying 8,000m of historic drill core underway
- District-scale geophysical surveys planned to refine targets
- Key local management appointments in Brazil
- Well-funded with A$17.6 million for exploration
Drilling Program Targets Scale and Continuity of Rare Earths
Oceana Metals Limited (ASX:OCN) has greenlit an initial 20,000-metre drilling campaign at its Serra Negra Rare Earths Project in Brazil, marking a significant step towards defining the scale and continuity of the rare earth element (REE) mineralisation. This program, expected to commence within weeks, aims to underpin an initial resource estimate later this year. The drilling will focus on the central carbonatite complex and test extensions across the 10-kilometre-wide alkaline intrusion, which is notably larger than the nearby Araxá complex known for world-class REE and niobium deposits.
The company expects to start with two diamond rigs and, pending protocol validation, ramp up drilling intensity to accelerate resource delineation and exploration of new targets emerging from ongoing work.
Historic Core Re-Assaying to Validate Mineralisation
Parallel to drilling preparations, Oceana has commenced re-logging, re-sampling, and re-assaying approximately 8,000 metres of historic drill core originally drilled for phosphate and titanium but never assayed for rare earths or niobium. This extensive core, stored near Belo Horizonte and soon to be processed closer to the project in Patrocinio, is being methodically sampled on one-metre intervals with rigorous quality controls. Results from this program will be released in batches over the coming months, providing critical data to confirm mineralisation distribution and geological controls.
This re-assaying effort builds on earlier portable XRF screening and grab sample assays that returned encouraging REE grades, supporting the potential for a significant deposit. The initiative follows the company's recent $20M acquisition funding secured to underpin this aggressive exploration phase.
Geophysical Surveys to Illuminate Carbonatite Architecture
To complement drilling and core analysis, Oceana is soliciting tenders for district-scale geophysical surveys including drone aeromagnetics, close-spaced ground gravity, and airborne electromagnetic (EM) surveys. These will provide unprecedented insight into the carbonatite's structural framework and mineralisation controls, potentially revealing new REE and niobium targets across the Serra Negra complex. The lack of previous detailed geophysical data at Serra Negra makes this a critical step in refining exploration models and guiding drilling priorities.
Local Leadership and Funding Position
Oceana has appointed Ms Marina Silva as Land Access, Environment Permitting and Environmental Studies Manager, who is already advancing drill permitting and community engagement. Ms Cintia Maia has been named Local Manager of Oceana Minerals Brazil Ltda, the company's newly incorporated Brazilian subsidiary that will oversee operations at Serra Negra. These appointments reflect a strategic push to embed local expertise and streamline project execution.
Financially, the company is well positioned with a pro forma cash balance of approximately A$17.6 million following acquisition completion and placement tranches, providing ample runway to execute its planned exploration programs and advance resource definition activities.
This exploration push builds on Oceana’s broader strategic pivot towards critical minerals, following leadership changes and asset acquisitions earlier in 2026, including the company’s rebrand and leadership refresh that signalled a new phase focused on metals exploration.
Bottom Line?
Oceana’s aggressive drilling and re-assaying campaign at Serra Negra sets the stage for a pivotal resource definition phase, but results and resource confirmation remain months away.
Questions in the middle?
- Will the drilling confirm the continuity and grade sufficient for a maiden resource?
- How will geophysical survey data reshape target prioritisation across the Serra Negra complex?
- Can Oceana maintain permitting momentum and community support to sustain exploration pace?