Octava Minerals Ltd (ASX:OCT) has intersected thick pegmatites at the maiden reconnaissance RC drilling programme at the Pinnacle Well lithium prospect at the Talga project in WA.
Managing Director and CEO Bevan Wakelam said drilling intersected lithium mineralisation that requires further investigation.
Pinnacle Well is located 10km to the north of the Archer Lithium Deposit (18Mt @ 1.0% Li2O) held by Global Lithium Resources.
The Octava team has successfully completed the first drilling programme for lithium at Talga on the Pinnacle Well lithium prospect,” Mr Wakelam said.
“The drilling covered a targeted area and recorded substantial intersections of pegmatite requiring follow up investigation and has improved our geological understanding of the orientation of the pegmatite intrusions.
“A number of outcropping pegmatites have been identified in the Pinnacle Well area and also at the nearby Nimerry prospect to the East, which are being systematically explored in detail. Octava has follow-up drilling planned to test additional outcropping pegmatite, at both Pinnacle Well and the Nimerry prospect.”
Pinnacle Well Lithium Prospect
Previous mapping, rock chip and soil sampling identified a number of priority lithium targets at Talga, including an extended area of anomalous lithium results around and to the north of the Pinnacle Well prospect.
Inspection by company geologists identified an approximately 1.5km length pegmatite running east-west, as well as multiple northwest striking pegmatites, with visible lithium mineralisation.
These pegmatites are hosted within greenstones close to the granite-greenstone contact, which is an important geology used in the discovery of lithium mineralised pegmatite in the Pilbara. Talga has over 20km of highly prospective contact zone geology.
The maiden drilling programmd of 725m targeted the large outcropping pegmatite identified at Pinnacle Well, where previous rock and soil sampling programmes recorded anomalous lithium values up to 200ppm Li2O.
The RC programme undertaken consisted of 10 drillholes and was completed in May 2023. Substantial intersections of pegmatite were recorded with the northerly dipping intrusive having a best intersected width of 45m from hole 23TC008 within a fine-grained foliated basalt from a depth of 1.0m.
