Green Technology Metals Ltd (ASX:GT1) has delivered further high-grade lithium assay results from its 100%-owned, well-infrastructured Root Project in Canada.
GT1 has received all assays from the 22 holes completed as part of Phase 1 definition drilling, while Phase 2 extensional drilling is in progress: strong visual spodumene has been logged in all holes.
Assay highlights from the further eight drill holes include:
- RL-22-0022: 14.0 metres at 1.35% Li2O from 47.4 metres, including 13.1 metres at 1.43% from 47.4 metres;
- RL-22-0023: 13.1 metres at 1.39% from 12.4 metres;
- RL-22-0018: 12.6 metres at 1.18% from 51.8 metres, including 7 metres at 2.06% from 51 metres; and
- RL-22-0017: 6.2 metres at 1.29% from 53.9 metres, including 3.5 metres at 2.12% from 55 metres.
The multi-asset lithium business has expanded drilling from its initial focus at the McCombe LCT pegmatite system, where it was targeting rapid delineation of a maiden mineral resource estimate (MRE), to the Morrison prospect.
GT1 has now drilled more than 50 holes intersecting spodumene-bearing pegmatite at McCombe and Root, with a second drill rig mobilised to McCombe.
“The high-grade assays received from Phase 1 drilling are very encouraging as we progressively increase the resource at McCombe,” CEO Luke Cox said.
“Phase 2 drilling has continued to intersect additional pegmatites to the northeast and the whole deposit is still open along strike and down dip. The second dill rig has now mobilised to the Morrison prospect, so looking forward to continued progress through the winter.”
The maiden Root MRE remains on track for Q1 2023.
Plan view of McCombe interpreted pegmatite, thickness, and grades.
Drilling in detail
Root is about 200 kilometres west of GT1’s flagship Seymour Project in Ontario, Canada. Notably, the Transcontinental (TSX:TCL.A) railway connects Root and Seymour projects with a direct line and sidings managed by CN Rail. Hydro power lines run through the eastern side of the Root Project electrifying the region with green energy.
The McCombe LCT (lithium-caesium-tantalum) pegmatite is the most advanced prospect at the Root Project.
Historical drilling completed by previous owners from 1950 to 2016 intersected numerous pegmatites, generally dipping to the south and striking east-west.
Phase 1 and Phase 2 drilling by GT1 has now demonstrated McCombe to be a simpler mineralised system consisting of:
- one major pegmatite averaging 10 metres true thickness (ranging 2 metres to 19 metres), striking east-west with shallow dip approximately 30 degrees to the south, open along strike and down dip; and
- two pegmatites striking northeast with shallow to moderate dip to the south with hole RL-22-532 intersecting (down hole):11.5 metres at 5% visual spodumene from 90.2 metres, 21.9 metres at 20% visual spodumene from 111.3 metres, and 20.8 metres at20% visual spodumene from 156 metres.
The Phase 1 drilling at McCombe delineated, extended and simplified the historical mineralised pegmatites in all directions.
Phase 2 drilling will be completed in the coming weeks for incorporation into the maiden MRE.
About Morrison
The Morrison LCT spodumene pegmatites are about 1 kilometre east of McCombe and were explored by Consolidated Morrison Explorations Ltd in the mid to late 1950s.
The pegmatites strike east-west and dip about 30 degrees towards the south. Outcrop of the pegmatite is about 200 metres long and tested by trenching but historical drilling has also proven the strike of the pegmatite to be at least 1.6 kilometres to the west with additional occurrences to the north.
Initial drilling at Morrison (20 holes for 2,500 metres) is targeted to confirm historical drilling and sampling.
The second phase of drilling is then planned to test for extensions of the mineralised pegmatites in all directions, infill key sections and rapidly facilitate delineation of an MRE.