MinRex Resources Limited (ASX: MRR) has identified more extensive pegmatites hosting visible lithium mineralisation in its detail field reconnaissance programme over the Tambourah North Lithium Project in the East Pilbara of Western Australia.
In August 2022, MinRex conducted the second pass ground geological mapping program over the Tambourah North Lithium Project, which highlighted the identification of more extensive pegmatites on the ground which were previously unknown.
The assay results have further validated the previously reported lithium mineralisation from MinRex’s initial rock chip programme which yielded high-grade lithium-tantalum-rubidium mineralisation.
“We are delighted to have further ground confirmation of lithium mineralisation identified from outcropping pegmatites over the Tambourah North Project areas,” Managing Director, George Karageorge, said.
“This rich lithium stacked sheeted pegmatites have extensive width, strike and zonation which have all the hallmarks of a potential Pilgangoora, Archer and Wodgina Lithium Deposits.
“Based on the surface geochemistry we have delineated 3 lithium bearing mineralised zones ready to be drill tested in the upcoming RC drill programme.
“Now that the Heritage Survey and WA Mines Department have approved MinRex application to drill, the Company is currently working on the first maiden RC drillhole programme to test the extensive stacked pegmatites over its 100% owned Project.”
Tambourah North Lithium Project
Tambourah is located approximately 200 km south southeast of Port Hedland and 80km southwest of Marble Bar within the Pilbara Mineral Field. Access is via the Great Northern Highway or the Marble Bar – Port Hedland Road and the connecting Hillside Woodstock Road.
Within untested zone 1, a series of stacked pegmatites hosting spodumene striking 330 0 over one km with approximately 50m in width were located within the greenstone belt. Spodumene rich pegmatites were identified in the northern portion of the tenement within the Apex Basalt greenstone belt.
During the geological mapping and rock chip sampling programme, a series of stacked pegmatites were identified in the central-southern area of E45/4953.
The central-southern zone identified and mapped a stacked series of lepidolite-albite-muscovite rich pegmatites on the contact zone between the Petroglyph Gneiss (granite lithology) and Apex Basalt greenstone belt. These pegmatites follow the same orientation of the granite-greenstone for approximately 830m in length with individual pegmatites ranging from 40m to 250m in length.
Extensive lithium mineralisation was also delineated 500m from MRR040 (1.91% Li20), with the pegmatites ranging from0.5m to 15m in width with lepidolite pegmatite veins cross cutting the main pegmatites.
This new target area has been classified as Zone 3 with the upcoming drilling programme concentrating over an area of 450m in strike length by 200m in width to test the newly identified lepidolite rich stacked pegmatites along strike and depth.
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