Bradda Head Lithium has announced an updated Mineral Resource Estimate (MRE) at its Basin East (BE) Project in Arizona resulting in a 65% increase in contained lithium carbonate equivalent (LCE) tonnes.
Furthermore, a continuous higher grade internal layer has been identified with a grade of approximately 1300 ppm Li in the upper part of the deposit. SRK have also identified a 1 million t to 6 million t LCE Exploration Target within the Basin Project district held by Bradda Head.
- Based on only 1110 m of 2021 drilling at its Basin East claim in Arizona, Bradda Head has added 120 000 t of LCE to the original maiden Mineral Resource, which previously totalled 185 000 t LCE, for an updated total LCE content of 305 000 t. The recent exploration drilling, and core logging has also identified a High-Grade zone within the resource of 58 000 t at approximately 1300 ppm Li. This has significant benefit in identifying and locating the next round of drilling targets.
- The 2021 drilling programme (3 out of the 10 holes were twinned holes) has given SRK greater confidence in the estimate at Basin East. The previous MRE was contained entirely within the Inferred Mineral Resource category and now approximately 23% of the updated LCE content is in the Indicated Mineral Resource category.
- It is important to note that some 75% of the updated total LCE is in the Upper Clay which has a grade of approximately 850 ppm and 20% of the updated total LCE sits within a newly defined High-Grade layer within the Upper Clay which has a grade of approximately 1300 ppm Li. The High-Grade and Upper Clay zones thicken towards the northwest extent of the drilled area into BHLs Basin East Extension claim and could potentially form part of a higher-grade mining operation than previously planned. This could be mined early in the mine plan as the High-Grade zone sits in the upper part of the deposit.
- The previous drilled area only covered 1.9% (0.9 km2) of Bradda’s 47 km2 of sedimentary claims. The 2021 drill programme has only increased this drilled area to 2.4% (1.1 km2) of BHLs 47 km2 of claims in this district.
- Importantly for future resource growth, the Mineral Resource remains open to the west and northwest of the drilled area where BHL has the adjacent Basin East Extension (BEE) claim block and beyond into BHL’s Basin North (BN), Basin West (BW) and Basin West Extension (BWE) claim blocks where geological mapping and geophysical surveys suggest that similar clay strata are present.
- On this basis, SRK has determined an Exploration Target of between 300 to 1300 million t of material grading between 600 to 850 ppm Li identified covering the claims BN, BE, BEE, BW, and BWE. This target is equivalent to a range of between 1 to 6 million t LCE.
- An extensive 30-hole drilling programme is planned for the remainder of 2022 at BEE and BN with permits in the process of being obtained and should start in 2Q22, also an additional 14-hole sonic drill programme has been approved at BE.
Charles FitzRoy, CEO of Bradda Head, comments:
“The increase in LCE at Basin East and assessment of exploration potential is extremely encouraging and highlights the resource growth potential. The total drilled area at Basin East covers 2.4% of our 47 km2, which previously only covered just under 2%. That’s an increase of 120 000 t of LCE over a drilled area increase of 0.2 km2. Evidence from drilling and geophysics suggests that this higher-grade Upper Clay layer could be relatively continuous, and we look forward to evaluating its potential further and following it into our other claims, where we believe it may also be present. With all the exploration work Bradda has done since its IPO last July, SRK now has the confidence to define an upgraded Exploration Target of up to 6 million t of LCE at our Basin Project.
“2022 is going to be an exciting year of resource growth for Bradda Head. With more drilling already planned at Basin East Extension and Basin North, BHL is excellently placed to take full advantage of the near-term resource growth potential at our sedimentary lithium assets in Arizona.
“We have an exciting year ahead with what we believe are a number of material catalysts and look forward to providing further updates throughout 2022. BHL is permitting at claims adjacent to Basin East (Basin North and Basin East Extension), and we expect to be drilling at these assets in Q2.”
Read the article online at: https://www.globalminingreview.com/mining/29032022/bradda-head-lithium-provides-mre-and-exploration-target-updates/
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