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Bradda Head Lithium announces results from soil sampling programme at San Domingo Pegmatite district

Published by , Editorial Assistant
Global Mining Review,

Bradda Head Lithium Ltd., the North America-focused lithium development company, as part of its ongoing programme to unlock value from its lithium bearing pegmatite opportunity in Arizona, USA, has announced results from an initial 3 km2 soil sampling programme, identifying a potential >3 km lithium-bearing trend and highly-prospective follow-up drill targets at its 23 km2 San Domingo pegmatite district in Arizona.


  • The results from a soil sampling programme covering approximately 11% of Bradda’s San Domingo pegmatite claims in Arizona have identified highly-prospective follow-up lithium targets over a 3 km+ strike, with 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.
  • Bradda Head carried out a soil sampling programme covering just under 3 km2 of the northern claim block at San Domingo, in order to support future drill hole targeting and gain a better understanding of its 23 km2 of pegmatite ground in Arizona. As announced on 8 August 2022, the company is now planning the next phase of this soil sampling programme to cover the remaining 20 km2 of Bradda’s San Domingo pegmatite project in Arizona.
  • Key potential lithium pegmatite identifier elements were analysed for, including; lithium, niobium, caesium, and rubidium. The Midnight Owl Mine, which has been historically mined at surface and has known lithium mineralisation, is where the company is currently drilling and returning strong anomalies associated with these elements.
  • Importantly, ratios present in the soils of elements associated with pegmatites and lithium mineralisation highlight targets for potential follow-up. The maps below show the areas of interest and, crucially, demonstrate a 9 km NE-SW trend, which may continue through the remainder of Bradda’s 20 km2 of claims and state MEPs in Arizona, which have not had detailed soil sampling. This should have a very positive impact on the scale potential at San Domingo.
  • Combining this analysis with the 3D mapping work carried out by SRK will help with geological modelling, drill targeting and follow-up exploration work. 
  • Permitting is also underway at the company’s state mineral exploration permits (MEPs), and expansion programmes are being formulated on the Bureau of Land Management (BLM) claims where Bradda is currently carrying out diamond core drilling.
  • Drilling is progressing well at San Domingo; we are 50% through the programme. Samples are being assayed currently, and results will be released before year-end once sufficient mass is received.

Charles FitzRoy, CEO of Bradda Head Lithium, commented:

“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. The US is investing US$135 billion in developing its domestic EV 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.

“This soil sampling programme is another critical tool used in drill hole targeting and in confirming the prospectivity of our project at San Domingo. Alongside our pegmatite project, we are driving growth at our Basin lithium-in-clay project, with an updated resource due before year-end. Bradda’s mix of pegmatite, clay and brine assets is a big de-risker for any investor. The recent TSX-V listing will also help to further broaden our shareholder base.

“This first drill programme at previously un-drilled areas is progressing well. Assay return times are still slow in the US due to an exploration boom over the last 2 years, but what we have seen so far has been promising, giving us confidence to implement exploration, permitting, and diamond drilling follow-up targets. With drilling firmly underway we look forward to updating the market before the end of the year.”

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US mining news Lithium mining news