ASX-listed Equinox Resources has reported additional outstanding ultrahigh-grade surface sample results from its Mata da Corda rare earths project, in Brazil.

The company notes that additional assay results from surface clay samples at the project have confirmed ongoing ultrahigh-grade rare earth clays, including 10 110 parts per million total rare earth oxides.

Equinox says surface sample results have also revealed significant anomalies in titanium dioxide, indicating “promising potential” for a secondary product.

Sample results were collected from the oxidised clay layer, which the company explains are generally weathered and host lower levels of mineralisation to what is indicatively directly beneath the clay.

The drilling will confirm the behaviour of the grades at depth, the company says.

"These surface results continue to showcase the incredible potential of our Mata da Corda project. We are steadfast in our commitment to fast-track our rare earths projects in Brazil as we progress drilling activities across both Mata da Corda and Campo Grande.

“Our rare earth projects provide us with the potential of all rare earth geologies from hard rock, monazite sand and ionic clay,” says Equinox MD Zac Komur.

Meanwhile, the company has appointed a drilling contractor and reverse circulation drill rigs have been deployed, with drilling to commence imminently.

Additionally, it has secured an environmental licensing exemption for the Mata da Corda project, enabling geological research and drilling operations.