Dakota Minerals - Phase Two Drill Results: Further High Grades from Lynas Find
Dakota Minerals (ASX:DKO) has released further high grade RC drill results from the Lynas Find lithium project in the Pilbara. High grade intersects include 32m @ 1.9% Li2O and 28m @ 1.8% Li2O. Dakota has now commenced resource modelling, with a maiden resource estimate expected in Q3 2016.
Lynas Find Lithium Project
• Phase two reverse circulation (RC) drilling analysis largely completed
• High grade intersects include: 32m @ 1.9% Li2O and 28m @ 1.8% Li2O
• Resource modelling now under way, maiden resource on track for Q3 2016
• Metallurgical test-work on diamond core from spodumene zones underway
Dakota Minerals Limited (“Dakota”, “DKO”, or “Company”) is pleased to announce an update of progress at its Lynas Find lithium project, in the Pilgangoora region of Western Australia.
Phase two reverse circulation (RC) drilling at Lynas Find was completed in late June. 36 holes for 3,423m were drilled in total, concentrating on resource definition at Lynas Find Central, with some additional testing of pegmatites proximal to this area. Samples were dispatched to Nagrom Laboratories in Perth for analysis, which has now been largely completed. Results include 32m @ 1.9% Li2O and 28m @ 1.8% Li2O.
Once all drilling results have been received, resource modelling and estimation will commence, this is expected to be completed during Q3 2016. Metallurgical test-work on diamond drill core obtained from the project in June is being carried out at SGS laboratories in Perth.
Dakota Minerals CEO David Frances commented: "We are pleased to have progressed the Lynas Find lithium project to this point within such a short space of time. While the maiden resource modelling and metallurgical test-work is under way, we will continue to prove up our targets in the project area and build on what we have defined at Lynas Find Central.”
Lynas Find Lithium Project: Drilling Programme Details
From the Phase Two reverse circulation (RC) drilling campaign at Dakota’s Lynas Find Lithium Project, all 36 holes have now been largely analysed, with a small batch of samples still outstanding. The drilling was mainly focused on comprehensive testing of the Lynas Find Central pegmatite and its western extension, for use in defining a maiden resource. This progressed in line with expectations, yielding high-grade intersections down-dip and along strike of the known mineralisation. Some reconnaissance holes were also drilled in additional pegmatites to the south, south-west and north-east of Lynas Find Central, which are now not thought to represent potentially economic targets. Drilling totalled 3,423m. A total of 772 samples, including QA/QC, were analysed by Nagrom Laboratories. The overall weighted average grade of the significant intercepts at Lynas Find Central is now 1.6% Li2O and 73 ppm Ta. The latest results included further high-grade intercepts, including 32m @ 1.9% Li2O and 28m @ 1.8% Li2O (Table 1). Although still open at depth, the results of this round of drilling have defined the Lynas Find Central area sufficiently to conduct resource modelling and estimation.
Metallurgical Test-work Update
Two vertical diamond holes, 16DD01 and 16DD02, were drilled at Lynas Find Central in June 2016 (Figure 2). Pegmatite was intersected from 0.5 to 51.90m in 16DD01, and 16.77 to 44.00m in 16DD02. Spodumene mineralisation, visually estimated to be up to 60% of the core in some zones, was present in both pegmatite intercepts (Figure 3). The core was cut and sampled at SGS Metallurgy in Perth. Metallurgical test-work, to determine optimal processing routes for the spodumene, are currently under way, and expected to take between 6-9 weeks. The results of this work will complement the resource modelling and estimation process.
Lynas Find Lithium Project
Dakota’s Lynas Find lithium project, to which Dakota has 100% rights, is located on and in the vicinity of an extensive lithium-tantalum bearing pegmatitic dyke swarm. Peer activity in the immediate area known as Pilgangoora, includes Pilbara Minerals Limited (ASX:PLS) and Altura Mining Limited (ASX:AJM), which have both discovered significant lithium and tantalum resources in recent times. Pilbara Minerals has identified a total Measured, Indicated and Inferred resource of 128.6Mt @ 1.22% Li2O and 138ppm Ta2O5, and 0.63% Fe2O3. On a neighbouring property, Altura Mining has identified an Indicated and Inferred resource of 35.7Mt @ 1.05% Li2O. Following recent exploration activity, the Pilgangoora area has been confirmed to contain one of the world’s largest hard-rock lithium deposits, mostly in the form of the mineral spodumene.