Brunswick Exploration Identifies Major Spodumene-Bearing Pegmatite Boulder Field at the Mirage Project

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Brunswick Exploration
Brunswick Exploration

Figure 1

Massive Prismatic Pale Grey Spodumene Crystal
Massive Prismatic Pale Grey Spodumene Crystal

Figure 2

Spodumene-Bearing Pegmatite Boulders
Spodumene-Bearing Pegmatite Boulders

Figure 3

Largest Spodumene-Bearing Boulder Identified to Date
Largest Spodumene-Bearing Boulder Identified to Date

MONTREAL, June 14, 2023 (GLOBE NEWSWIRE) -- Brunswick Exploration Inc. (TSX-V: BRW, OTCQB: BRWXF; “BRW” or the “Company”) is pleased to announce that it has identified a major trend of large spodumene-bearing pegmatite boulders over 1.7km of strike length at the Mirage Project in the James Bay-Eeyou Istchee region of Quebec. The Mirage Project is located approximately 105 km east of Patriot Battery Metals’ Corvette Lithium Project and 34 km northeast of Winsome Resources’ Adina Project.

Mr. Killian Charles, President and CEO of BRW, commented: “With the positive identification of over twenty large spodumene-bearing boulders, the Mirage Project is now a top priority for the Company. The field crew is eager to return as soon as the government-imposed fire restrictions are lifted. I am particularly excited that prospecting rapidly uncovered such large, well mineralized boulders with pale grey spodumene crystals as the Project remains unexplored for lithium. BRW will immediately apply for drill permits with the objective of drilling as rapidly as possible in Q3 once the source(s) of the boulders has been identified.”

The follow-up field work for spodumene-mineralized boulders, first identified by a geologist nearly 25 years ago (see press release dated January 24, 2023), confirmed the presence of over twenty plurimetric spodumene-bearing pegmatite boulders in a band over an up-ice strike length of 1.7 km. All boulders observed host well-defined, large (up to 50cm) light grey spodumene crystals with mineralization varying between 5 and 50% of the pegmatite (see Figure 1). Boulders are sub-angular to sub-rounded (see Figure 2). Gangue mineralization is typical of LCT-type pegmatites and consists of coarse-grained quartz, rubidium-rich feldspars and muscovite with minor amounts of tourmaline and fluorite.

While the source has not yet been identified, based on the angular shape of boulders, their large size and abundant distribution, the source is interpreted to be close and within the Project boundary. The largest boulder identified to date measures over 6 metres by 6 metres by 5 metres (see Figure 3). No exploration work for lithium has previously been conducted in the area, and the Mirage claim group stretches up-ice for 18 km from the boulder field.

Next Steps

The discovery was made in two field days before government-imposed restrictions due to forest fires forced the BRW field teams to evacuate the James Bay-Eeyou Istchee region. Once restrictions are lifted, BRW will immediately dispatch its team to continue to advance the project towards the drilling stage. The full strike extent of the boulder field remains undefined with potential for more spodumene-bearing boulders (and their source) to the northeast. Based on these exciting results and the potential for additional discoveries, BRW will immediately apply for drilling permits to follow up on the forthcoming summer field work.