Bradda Head Lithium Limited (AIM:BHL, OTCQB:BHLIF, TSX-V:BHLI) has released results from soil sampling at its San Domingo lithium pegmatite project in in Arizona.

The sampling has identified a lithium-bearing trend that may be greater than three kilometres in length.

The samples show the same elemental signatures that have been seen at known lithium mineralisation locations globally.

The soil geochemistry suggests that the pegmatite swarm is largely of the lithium-caesium-tantalum (LCT) mineralisation type, the most significant for lithium deposits and what is commonly associated with economic occurrences of lithium and tantalum.

LCT-type pegmatites are found in the Western Australian pegmatite district, like Tianqi and Albemarle's joint-venture Greenbushes lithium mine.

The company is now planning the next phase of this soil sampling programme to cover the remaining 20 square kilometres of the San Domingo pegmatite project.

Meanwhile, drilling remains ongoing at San Domingo. The company is 50% through its programme. Samples are being assayed currently and results will be released before year-end.

"The soil results indicate excellent targets beyond the current drilling plan, and are a further piece in the puzzle to help us understand the size potential we have at San Domingo and in unlocking the value at this lithium-bearing pegmatite opportunity in Arizona,” said Charles FitzRoy, chief executive of Bradda Head Lithium.

“The US is investing $135bn in developing its domestic electric vehicle and critical mineral supply chain, and our San Domingo pegmatite project is ideally situated to help with that supply and to potentially benefit from Department of Energy funding.”

Separately, an updated resource is due from Bradda Head’s Basin lithium-in-clay project.