Eminence Minerals Expands Campo Grande Auger Drilling Following First-Phase Completion

By Mining Hub News Desk
12 August 2026, 8:46 p.m. EDT 2 min read

Eminence Expands Campo Grande Drilling Program – image 3
Auger drilling team at the Campo Grande Project.. Source: Eminence Minerals Limited

Eminence Minerals has completed the initial phase of its auger drilling campaign at the Campo Grande Project in Bahia, Brazil, and is expanding exploration into new high-priority targets in the northeastern and southern areas of the property.

The ongoing campaign has completed 30 auger holes totaling 316.4 metres across Targets 2, 3, and 4. A further 11 holes spanning 75.2 metres have been drilled at Targets 5 and 6, with work continuing as the rig advances eastwards. Samples from Targets 3 and 4 have been dispatched in batches to the SGS GEOSOL laboratory in Vespasiano, Brazil, with assay results expected in September or October 2026.

Drilling at Targets 1 and 2 was discontinued after 12 holes for a total of 50 metres because each hole encountered paragneiss bedrock at depths between 1.5 metres and 6.5 metres, averaging 4.2 metres. Nine of those 12 holes failed to meet the company's sample acceptance criteria as no saprolite horizon was developed, resulting in no samples being submitted for analysis.

Eminence holds a 100% interest in the 1,690-square-kilometre Campo Grande Project within the Rocha da Rocha Rare Earth Province, which adjoins tenure held by Brazilian Rare Earths and Alurion Resources. Nearby explorer Resouro Strategic Metals reported raising $1.86 million in the first tranche of an upsized private placement for its Tiros rare earth and titanium project within the surrounding district on 7 August 2026.

Following the first phase, Eminence is expanding the campaign to test two mineralisation models: ion-adsorption clay rare earth elements and bauxite-gallium mineralisation. A program of up to 70 holes is planned at the Northeast Target, which is interpreted as a potential continuation of the Amargosa Bauxite-Gallium trend. Landowner access has been secured for eight drill collars at the Northeast Target, allowing drilling to start immediately, while negotiations continue for the remaining 62 collars.

A further 67-hole auger program is planned at the South Target, subject to landowner access agreements. To accelerate the systematic exploration effort, a second drilling crew is being mobilised, alongside concurrent surface sampling programs to expand geochemical coverage across the broader project area.

Read the full announcement: Eminence Expands Campo Grande Drilling Program