Projects / Seymour

Root Project

Ontario, Canada

100% owner Root Project planned to be in production by 2028.

14.6Mt @ 1.21% Li2O

Mineral Resource Estimate


Diamond Drilling Completed


Expected first production


GT1’s exploration at its 100% owned Root lithium project has so far revealed multiple stacked LCT pegmatites and a Mineral Resource Estimate of 14.6Mt @ 1.21% Li2O (comprised of 9.4Mt @ 1.30% Li20 Indicated and 5.2Mt at 1.03% Li2O Inferred from the McCombe and Root Bay Deposits).

A 33 hole, 7,290m diamond drill program was completed in October 2023 focused across the underexplored Eastern and Western Extension to the Root Bay deposit. The trend remains open and is categorised as highly prospective as the geological trend can be traced over the entire length of GT1’s tenement through the magnetic BIF unit that runs along the northern boundary of the Root Bay deposit.


25 -35 Mt @ 1.0 – 1.5% Li2O, highlighting the potential for further resource growth at the Root Lithium Project

Increase of 11 million tonnes based on knowledge gained by GT1 from drilling the LCT pegmatites at Root over the last 18 months

Planning further drill programs at the Root Bay deposit focused on the underground potential and further drill testing at Root Bay East to add to the company’s total global resource base

Exploration Targets

Root Bay

GT1’s exploration at its 100% owned Root lithium project has so far revealed multiple stacked LCT pegmatites and a maiden Inferred Mineral Resource estimate of 14.6Mt @ 1.21% Li2O from the McCombe and Root Bay pegmatites.

The company has identified 18 stacked pegmatites to depths exceeding 400 meters and extending along the Root Bay trend for 1,300 meters, with a northerly strike length of up to 300 meters.

The thickness of these stacked pegmatites at Root Bay ranges from 2 meters to 18 meters.

Deeper Extensions

Initial deeper drilling around the western pegmatite RB006 has demonstrated potential depth extents around this thick and high-grade pegmatite. Initial results from the first two holes confirms the Root Bay deposit extends downdip by at least 300m, providing a strong underground exploration target.

Root Bay East

GT1 has completed its maiden drill program at Root Bay East, aimed at testing extensions of the Root Bay deposit by targeting along-strike repetitions of the Root Bay resource.

The initial success of the maiden program confirms high-grade intercepts up to 23m thick and identification of seven new pegmatites along an 800 metre east-west trend.

These results indicate the potential for a repeat of the Root Bay Deposit with the company further encouraged as the pegmatite intercepts exhibit common characteristics with the Root Bay deposit, including their location on the same Aero-Magnetic Geophysical trend, presence of Meta-basalt host rocks, and identical coarse-grained spodumene-bearing pegmatites.

Root Bay West

The company completed a small maiden drilling program at Root Bay West, comprising of 15 holes totalling 2763m.

Due to the focus on the Eastern side of Root Bay, the program on the western side was reduced leaving spodumene targets available for future drilling programs.

The results returned from the maiden drilling program reveal generally narrow pegmatite thicknesses (0.7-1.5m) however, a notable 5 holes intersected new spodumene-bearing pegmatites that were previously unknown and not exposed at surface.

Geologically the Root Bay West area is identical to Root Bay and Root Bay East zones and future drilling will help determine whether the Western zone contains the same stacked spodumene-bearing pegmatites of economic thicknesses, similar to the 10.1Mt resource at the central Root Bay zone.


Spodumene Concentrate Product Specifications

  • Hybrid combination DMS and flotation processing
  • High grade – finer-grained spodumene, finer crushing and liberation size
  • HLS test work – 5.5%Li2O achieved, low recoveries
  • Sighter flotation tests – 67.1% Recovery
  • PEA Basis – 5.5% Li2O @ 75% Recovery
  • 1.5Mtpa throughput, 200Ktpa concentrate output (Life of Mine Average)
  • 10 year mine life
  • Standard permitting timelines – federal permits most likely required
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