White Willow Project | Totec Resources

Overview

A district-scale target in a proven jurisdiction

White Willow sits in one of Canada's most established mining regions, with year-round road access and infrastructure close at hand. Its lithium-cesium-tantalum pegmatites span two showings, Maple Leaf and Bingo, across a large, underexplored land package.

The property lies within the Thunder Bay South Mining District, immediately southeast of the town of Atikokan and a short drive west of Thunder Bay. Ontario's skilled workforce, permitting framework and existing haul and power infrastructure make it a low-friction setting in which to advance an early-stage discovery.⁽¹⁾

Aerial view of a field pickup truck on a gravel bush road cutting through dense green boreal forest — Year-round bush-road access to the White Willow property through the boreal forest near Atikokan, Ontario.

8 km

Southeast of Atikokan⁽¹⁾

185 km

West of Thunder Bay⁽¹⁾

Year-round

Road access⁽¹⁾

Geology

Highly fractionated LCT pegmatites

White Willow lies within the Quetico Terrane of the Superior Province, a metasedimentary belt intruded by S-type granites. Along its northern boundary these granites give rise to LCT (lithium-cesium-tantalum) pegmatites carrying the classic fractionation signature of a fertile pegmatite field.⁽¹⁾

In a fertile system, pegmatite dikes become progressively more chemically evolved with distance from their parent granite. The barren zone nearest the source gives way outward to beryllium, then niobium-tantalum, then lithium and finally cesium enrichment. The presence of beryl, tantalum and cesium minerals at White Willow places its pegmatites at the highly fractionated, most prospective end of that sequence.⁽¹⁾

TerraneQuetico, Superior Province⁽¹⁾
HostMetasedimentary belt, S-type granites⁽¹⁾
StyleLCT pegmatites (Li-Cs-Ta)
SettingNorthern granite-metasediment boundary⁽¹⁾

Diagram of the generalized LCT pegmatite zonation model: pegmatite dikes grade from a barren zone near the granite source through beryllium, niobium-tantalum, lithium and cesium enrichment with increasing fractionation — Generalized exploration model for LCT pegmatites. Source: USGS, modified from Trueman and Cerny (1982). The presence of beryl, tantalum and cesium indicates the White Willow pegmatites are highly fractionated and prospective for lithium.

Maple Leaf Showing

A large, spodumene-bearing pegmatite trend

The Maple Leaf showing defines a pegmatite trend roughly 8 km long and 1 km wide, of which about 3 km has been mapped in detail. Surface work has confirmed 47 LCT pegmatites carrying spodumene, beryl and coarse tantalite.

47

Confirmed LCT pegmatites across the mapped trend.⁽¹⁾

14.64%

Ta₂O₅ in coarse tantalite from surface grab sampling.⁽²⁾

~8 km x ~1 km

Pegmatite trend, with ~3 km mapped in detail.⁽¹⁾

Scale and mineralogy

The largest outcrop mapped to date measures roughly 350 m by 70 m and is spodumene-bearing. Across the showing, coarse crystal growth points to a well-developed, evolved system, with beryl crystals up to 11 cm and K-feldspar to 100 cm.⁽²⁾

Largest outcrop~350 m x ~70 m, spodumene-bearing⁽²⁾
Beryl crystalsUp to 11 cm⁽²⁾
K-feldsparUp to 100 cm⁽²⁾

Surface geochemistry

Grab and channel sampling has returned a consistent lithium-cesium-tantalum tenor across the showing, confirming the fertility of the pegmatite field.⁽²⁾

Cesium36 samples >115 ppm Cs⁽²⁾
Lithium45 samples >300 ppm Li⁽²⁾
High-grade Li6 samples >1,000 ppm Li, up to 0.5% Li₂O⁽²⁾

A blocky pale green crystal resting on quartz-rich outcrop beside a yellow field notebook marked with a centimetre and inch scale — A coarse, blocky pale green crystal in pegmatite at Maple Leaf, field notebook for scale.

Coarse-grained pegmatite outcrop with dark black tantalite crystals and pale feldspar and quartz, a mechanical pencil placed for scale — Coarse pegmatite with dark tantalite and blocky feldspar, mechanical pencil for scale.

Coarse-grained quartz-rich pegmatite with a rock pick placed for scale — Coarse-grained, quartz-rich pegmatite, rock pick for scale.

The coarse tantalite grade of 14.64% Ta₂O₅ at Maple Leaf is in the range of coarse-tantalite results reported by Green Technology Metals from its North Aubrey prospect at the Seymour Lake project in the same region.⁽²⁾

Mineralization hosted on adjacent or nearby properties, including Green Technology Metals' Seymour Lake project, is not necessarily indicative of mineralization hosted on the White Willow Property. The Qualified Person has not verified the information regarding the adjacent property, and that information is not indicative of mineralization on the White Willow Property. The adjacent-property information regarding Green Technology Metals' North Aubrey prospect is drawn from Green Technology Metals' public disclosure, as compiled in the Totec Resources corporate presentation, January 2026.

Bingo Showing

A 5 km pegmatite field, open in both directions

The Bingo showing extends a pegmatite field roughly 5 km in length that remains open in both directions. Two mapped pegmatites measure 600 m and 450 m long and up to 75 m wide, and would form a combined strike of approximately 1.2 km if connected.

~5 km

Pegmatite field, open in both directions.⁽¹⁾

600 m & 450 m

Two mapped pegmatites, up to 75 m wide.⁽¹⁾

~1.2 km

Combined strike if the two bodies connect.⁽¹⁾

Fractionation geochemistry

Bingo returns the low K/Rb and Nb/Ta ratios and elevated lithium, rubidium, cesium and tantalum values that mark a highly evolved, fertile pegmatite field.⁽²⁾

K/Rb<20⁽²⁾
Nb/Ta<0.5⁽²⁾
Lithium>800 ppm Li⁽²⁾
Rubidium>4,200 ppm Rb⁽²⁾
Cesium>950 ppm Cs⁽²⁾
Tantalum>350 ppm Ta⁽²⁾

Indicator mineralogy

The showing hosts the mineral assemblage expected of an evolved LCT system: white beryl, spessartine garnet, blue-green apatite and tantalite, along with suspected holmquistite.⁽²⁾

A quartz-rich rock sample with black tantalite crystals and orange iron staining, a paper sample-number tag placed beside it — A sample from White Willow showing dark tantalite in a quartz-rich matrix.

Property Map

Two showings across one land package

From the Field

White Willow on the ground

A geologist in a high-visibility red vest crouching to sample a light-grey granitic outcrop at the edge of a calm, forest-lined boreal lake — Sampling a lakeshore outcrop at White Willow, Thunder Bay South Mining District.

A grey and white weathered pegmatite outcrop surface with a blue-handled geologist's brush and a strip of red flagging tape — A cleaned pegmatite outcrop surface with geologist's brush and flagging tape.

Coarse-grained pegmatite with black tantalite crystals set in pale feldspar and quartz, a mechanical pencil placed for scale — Dark tantalite and blocky feldspar in coarse pegmatite, pencil for scale.

A blocky pale green crystal on quartz-rich outcrop beside a yellow field notebook marked with a scale — A coarse, blocky pale green crystal with a field notebook for scale.

A quartz-rich rock with black tantalite crystals, orange iron staining and a paper sample-number tag — Dark tantalite in a quartz-rich sample, with sample tag.

The Road Ahead

A disciplined exploration approach

Totec's approach at White Willow is to build the geological picture methodically, letting each stage of surface work sharpen the targets that follow before any subsurface testing is considered.

Systematic mapping

Extend detailed geological mapping across the Maple Leaf trend and the open Bingo field to define the full extent and orientation of the pegmatite swarm.
Prospecting and sampling

Follow up the strongest lithium, cesium and tantalum responses with continued grab and channel sampling to confirm grade tenor and fractionation trends.
Geophysics

Apply geophysical surveys to trace pegmatite bodies under cover and test whether separate outcrops connect at depth.
Target definition

Integrate mapping, geochemistry and geophysics to prioritise the most prospective zones ahead of any future subsurface targeting.

Sources: (1) Totec Resources corporate presentation, January 2026. (2) 2022 Surface Prospecting Report, White Willow Property (AFRI 20000022099).

The scientific and technical information on this page has been reviewed and approved by Deepak Varshney, P.Geo, CEO and Director of Totec Resources, a Qualified Person as defined by National Instrument 43-101.

Historical results referenced from the 2022 Surface Prospecting Report filed for assessment (AFRI 20000022099).

This page contains forward-looking statements regarding Totec Resources Ltd. and its exploration plans. Actual results may differ materially, and readers should not place undue reliance on forward-looking information.