Winsome Resources (ASX:WR1) has confirmed lithium mineralization over a three km trend at its flagship Adina Project in the James Bay region of Quebec, Canada.
Winsome has also mobilized a third drill rig to fast-track drilling of the targets delineated by ground gravity surveying as well as test for the continuity of mineralization along the three km of strike between the pegmatite bodies.
New assay results have confirmed high-grade lithium mineralization some 1.9km east of the Main Zone and new results including: 1.50% Li2O over 12.2m from 63.3m; 1.77% Li2O over 6.0m from 83.4m; and 1.26% Li2O over 15.0m from 47.4m.
“We have now extended the strike of lithium mineralization at Adina to 3km and it remains open to both the east and west. As part of our expanded drilling programme we will continue to test the broader Adina project to determine the scale of mineralization as well as the link between Adina East, Adina Main and the previous drilling undertaken at Adina by MetalsTech. We look forward to further results from our intensive drilling campaign in coming weeks,” Managing Director, Chris Evans, said.
Mr Evans said the presence of mineralization away from the Adina Main Zone is not unexpected given the mineralization delineated previously by MetalsTech. A 10-hole reconnaissance diamond drilling campaign was completed in 2018 with multiple, well-mineralized pegmatite zones intersected over a strike length of approximately 800m2. This area was the initial focus of Winsome’s exploration at Adina until the Jamar discovery, which is now referred to as the Adina Main Zone.
Lithium mineralization at all three prospects (Adina Main, Adina East and Adina) occurs as spodumene crystals hosted in pegmatite with no obvious visual differences observed during logging.
Multiple phases of pegmatitic intrusions are suspected to have occurred over time as detailed previously and accordingly it is currently not known whether the three prospects represent the same body, offset by faulting, or represent three or more phases of intrusive activity. Further drilling and analysis will be required to ascertain this and allow a robust geological model to be built up.
Potential exists for further pegmatite swarms to be identified within the broader Adina Project. A significant area was traversed exploring for outcropping pegmatites during the 2022 field season and further areas remain to be explored in the forthcoming 2023 field season.
A key tool in the company’s exploration strategy is the use of close spaced ground gravity surveys to delineate contacts between pegmatites, amphibolites and granitoids by mapping density changes. The intrusion of pegmatite swarms into mafic and ultramafic basement rocks at Adina is anticipated to be expressed as a detectable, subdued gravity response. Interpretation and target generation was undertaken by Perth-based consultancy NewGen Geo Pty Ltd, which specializes in the application of geophysics to pegmatite exploration. It is planned to expand the ground gravity coverage during 2023 to the southwest, including the 2018 drilling area, to identify further targets along the regional structural corridor which runs WSW – ENE.
Drilling at Adina East reported in this announcement was carried out in December 2022 and January 2023. Hole AD-22-043 was drilled some 1.6km east of the Adina Main Zone, with holes AD-23-044 and AD-23- 045 being drilled to the east of AD-22-043 based on visual observations of spodumene-bearing pegmatite. With lithium mineralization being confirmed at the prospect further drilling is now planned to be carried out.
A third drilling rig is currently being mobilized to site to fast-track drilling of the targets delineated by ground gravity surveying as well as test for the continuity of mineralization along the three km of strike between the pegmatite bodies defined at Adina Main, Adina East and in the MetalsTech drilling.
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