Green Technology Metals (ASX:GT1) reports it has recorded the ‘highest’ grade lithium intercept to date at the McCombe Prospect, located within the Root Project in Ontario, Canada.
The company says the McCombe lithium-caesium-tantalum (LCT) pegmatite is currently the most advanced prospect at the Root Project, and historical drilling completed by previous owners from 1950 to 2016 intersected numerous pegmatite generally dipping to the south and striking east to west.
Phase one and two drilling by the company has now demonstrated McCombe to be a much simpler mineralised system with one major pegmatite averaging 10m thickness (ranging from 2m to 19m), striking east to west with a shallow dip of around 30º to the south, and a second pegmatite striking northwest with similar thickness.
Green Technology reports the average grades, spodumene crystal size and crystal mass returned in the recent drilling at McCombe correlate well with the historic down dip continuity drillhole completed in 2016 which intercepted 67m @ 1.75% Li2O, and a second similar pegmatite has been intersected at the mid-point of the main pegmatite striking northeast and dipping to the southeast, with further targeted drilling set to extend this pegmatite to its natural limits.
Phase one drilling at the deposit has been completed comprising 22 resource definition diamond holes, and assays have been returned for 14 holes which all intersected ‘thick’ and continuous ‘high-grade’ spodumene pegmatites from surface.
All holes also intersected spodumene bearing pegmatites, with the recent holes returning the ‘highest grade’ intercept to date of 2m @ 4.06% Li2O in RL-22-0013 within a broader 8m pegmatite intercept averaging 1.72% Li2O from 64m downhole, and assays are still pending for the last 8 holes, expected to be received in the coming weeks.
Green Technology Metals CEO Luke Cox said: “Recent assays returned have confirmed that McCombe is higher grade than originally interpreted based on historical data.
The Root Project as a whole is also developing into a much larger complex, with McCombe potentially joining with Morrison to form a structure over several kilometres long, and recent spodumene discoveries at Root Bay confirming it extends east and west along a magnetic high.”
“Recent assays returned have confirmed that McCombe is higher grade than originally interpreted based on historical data”
The company reports phase two extensional diamond drilling at McCombe is in progress with 2 drill rigs operating around the clock, and Green Technology states phase two has delivered ‘significant’ expansion of the McCombe Deposit already, with ‘strong’ visual spodumene logged in robust extensional pegmatite intercepts.
Green Technology also states the Morrison LCT spodumene pegmatites located around 1km east of McComb were explored by Consolidated Morrison Explorations in the mid to late 1950s, and the pegmatites here strike east to west and dip about 30º towards the south, and the outcrop of the pegmatite is about 200m long and tested by trenching, however historical drilling has also proved the strike of the pegmatite to be at least 1.6km.
The Root Bay LCT spodumene pegmatite has no historical drilling, however channel sampling returned 14m @ 1.67% Li2O including 3m @ 2.24% Li2O, and field exploration mapping completed by Green Technology Metals in September and October this year has located additional spodumene occurrences around 300m west along a magnetic and topographic ridge running east to west with a grab sample returning 2.39% Li2O.
The initial geological model has the pegmatites cross cutting the magnetic high, north to south in a potential stacked system, and the company says exploration drilling programs are being planned to test the Morrison Root Bay LCTs over the next 12 months.
Green Technology Metals is a North American focused lithium exploration and development business that wholly owns the Seymour, Root and Wisa Projects all located in Ontario, Canada.
Images: Green Technology Metals Ltd
