Brunswick Exploration Intersects Significant Spodumene Mineralization in a Vein Collection at Mirage – LeLé

Class in: Mining
Theme : Analyst comments

MONTREAL, 04 dc. 2023 (GLOBE NEWSWIRE) — Brunswick Exploration Inc. (TSX-V: BRW, OTCQB: BRWXF; BRW or the Pursue) is pleased to announce initial drilling results from the Mirage Project in the Eeyou Istchee-James Bay region of Quebec. The initial drilling campaign of 5,000 meters enabled the delineation of four large spodumne pegmatite veins with significant intervals of lithium mineralization present throughout. All veins drilled to date are located in an area approximately two by two kilometers in size, which is exposed on the surface and is open in all directions. Several other mapped veins and other prospective targets remain to be drilled, including the significant boulder field southwest of the vein swarm.


  • Bonanza type content: 25.8 meters 2.57% Li2Oh go on in the survey MR-23-02, including 14.2 meters 3.08% Li2Oh, in the Dyke MR-1 in the North Zone at a vertical depth of 28 meters.
  • Wide range of 50.6 meters 1.06% Li2O in well MR-23-07 of the MR-3 vein in the Central Zone, a shallow vertical depth of 22 meters.
  • Another Bonanza-like interval in the survey MR-23-14 16.2 meters 2.75% Li2O including 9.5 meters 3.30% Li2O a vertical depth of 40 meters in dyke MR-4 in the southern zone.
  • To date, the Spodumne pegmatite dikes have been further followed by drilling a combined lateral extent of at least 1500 meters and remain open in all directions.
  • Only 60% of the pegmatite outcrops have been drilled; Additional drill targets will be tested in winter 2024.
  • Assay results for 23 additional wells in the fall 2023 program are pending.

Mr. Killian Charles, President and CEO of BRW, said: “We are rapidly beginning to discover a major discovery in the Eeyou Istchee Baie-James region.” This discovery in unexplored terrain was first identified in August and drilling began less than six weeks later. Shallow drilling has already intersected several large mineralized veins that returned significant bonanza-type grades in this very first batch of assay results. It is important to note that these pegmatite dikes remain open in all directions. With recently completed $5.7 million in financing, we are well positioned to significantly expand the Mirage discovery with our 2024 winter drilling campaign.

Mr Robert Wares, Founder and Chairman, also commented: “I am very pleased with these initial drilling results.” Mirage is already demonstrating the potential of a vast field of lithium-rich veins, with some of the best intercepts announced at Eeyou Istchee-James Bay. Furthermore, I am convinced that the distribution of the four mineralized Mirage dikes does not explain the presence of the three kilometer long, spodumne-rich talus field to the southwest. With additional Spodumne dikes emerging up to three kilometers to the northeast, extensive exploration and drilling will be required to uncover the full potential of this large property.

Table 1: Mineralized intercepts from initial Mirage drill results

Opinion poll Area Dyke From (m) (M) Length (m) Li2O% Your2O5 (ppm)
MR-23-01 north MR-1 40.0 64.5 24.5 2.18 228
Incl. MR-1 42.5 52.0 9.5 3.06 202
MR-23-02 north MR-1 8.8 34.6 25.8 2.57 239
Incl. MR-1 8.8 23.0 14.2 3.08 268
MR-23-03 north MR-2 23.3 29.5 6.2 1.12 227
MR-23-04 north MR-2 27.8 30.3 2.5 0.52 141
MR-23-05 Central MR-3 5.5 45.8 40.3 0.86 87
Incl. MR-3 5.5 15.5 10.0 1.48 99
Incl. MR-3 39.5 45.8 6.3 1.16 148
MR-23-06 Central MR-3 17.7 55.1 37.4 1.02 93
Incl. MR-3 42.6 48.1 5.5 2.23 135
MR-23-07 Central MR-3 22.0 72.5 50.6 1.06 105
Incl. MR-3 30.7 43.2 12.5 1.76 192
MR-23-08 Central MR-3A 10.6 12.7 2.1 0.33 112
MR-23-09 Central MR-3 66.0 77.3 11.3 0.89 69
MR-23-10 Central MR-3 39.4 87.2 47.8 0.99 80
Incl. MR-3 39.4 52.4 13.0 1.29 81
Incl. MR-3 79.4 87.2 7.8 1.55 73
MR-23-11 Central MR-3 83.8 118.6 34.9 1.01 Analysis is still pending
Incl. MR-3 98.7 106.0 7.3 1.75
MR-23-12 Central MR-3 92.0 133.1 41.1 1.04 94
Incl. MR-3 103.0 109.0 6.0 2.49 203
MR-23-14 South MR-4 46.5 62.7 16.2 2.75 98
Incl. MR-4 52.5 62.0 9.5 3.30 113

Holes 13 and 15-36 are currently being analyzed

Mirage Drilling Campaign Overview

The objective of the 2023 drilling campaign was to test the shallow depth (less than 150 meters vertical depth) of the pegmatite dikes mapped at surface to determine their geometry and orientation. Thirty-six (36) diamond drill holes have been completed (see Figure 1), totaling 5,090 meters drilled to date. Thirty-three (33) of the 36 holes drilled during the 2023 campaign intersected mineralized pegmatites.

The mineralized pegmatite veins discovered at the Mirage Project are distributed over three major corridors along a NE-SW axis, namely the North, Central and South Zones, in a 2 by 2 kilometer sector (see Figure 1). The mineralized pegmatite veins in these areas are massive, with very coarse crystals and a mineralogy characterized by the presence of quartz, feldspar, some muscovite, black tourmaline, light gray spodumne and traces of bryll. Spodumene mineralization, generally decimetric, often reaches up to 50% of the mineral composition.

This initial drilling campaign increased the extent of mineralized pegmatite over a total distance of 1.5 km and demonstrated excellent continuity and high grades. All pegmatite veins remain open in all directions. Additionally, several other outcropping spodumne pegmatites remain to be drill tested.

illustration 1: Mirage Project surface plan showing drilling completed to date

Central zone

The MR-3 pegmatite dike intersected in the central zone has an apparent thickness of up to 50.6 meters 1.06% Li2O (MR-23-07) with a moderate dip of approximately 50 degrees to the south, such that the true thickness is estimated at 95% in all studies presented (see Figure 2). The main central zone vein is oriented northeast and reaches the surface where it can be traced continuously over 400 meters, with a continuous width of over 40 meters and an average grade of approximately 1.00% Li2O. So far, the main corridor in the central zone is defined by six holes (MR-23-05 07 and MR-23-09 12) and remains open in all directions.

A second unmapped surface vein (MR-3A) ​​was identified in hole MR-23-08, representing the first blind discovery of a Mirage pegmatite vein. During the study, the dyke edge was only partially intersected and is not representative of the grades or width of dyke MR-3A. Hole MR-23-35 targeted this new vein and assays are ongoing.

Figure 2: Cross section of the central zone

Figure 3: Cross section of the northern zone

North zone

Four shallow holes were drilled in the North Zone (MR-23-01, MR-23-04). All drilling intersected two spodumne pegmatite veins, MR-1 and MR-2. Two holes, MR-23-01 and MR-23-02, returned intercepts with Bonanza-type grades: 24.5 meters 2.18% Li2O And 25.8 million 2.57% Li2O respectively. The MR-1 vein appears to dip to the north and the actual width is estimated to be 90% of the length along the drill axis (see Figure 3). Both dikes remain open in all directions. In the northern zone, three additional exposures of spodumne pegmatite remain to be drilled up to one kilometer to the east.

South zone

Preliminary results from the South Zone, all from the MR-4 pegmatite vein, also show high-grade, bonanza-type mineralization near surface. The dike was continuously monitored by drilling for more than 750 meters with a moderate slope of 45 degrees to the south (see Figure 4). This press release reports only one survey of the levee in the South Zone, MR-23-14, which revealed a breach 16.2 meters 2.75% Li2O. Similar bonanza-type mineralization has been observed along the entire length of the vein and remains open in all directions.

Figure 4: Cross section of the southern zone


All drill samples were collected under the supervision of BRW employees and contractors. The drill cores were transported by helicopter and truck from the drilling platform to the Val-d’Or map library. Each core was then described, photographed, labeled and sawn with a diamond saw before sampling. All pegmatite sections were sampled at approximately 1 m intervals to ensure representativeness, and duplicates were included from the quarter cores. The samples were packaged and blank samples and standards made of certified material were inserted at regular intervals. Samples were grouped into larger bags, sealed and labeled to maintain chain of custody. The sample bags were transported from the BRW contractor’s facilities to the ALS laboratory in Val-d’Or. All sample preparation and analysis work was performed by ALS. The samples were crushed so that 70% of the material passed through a 2 mm sieve (CRU-31 method), a subsample of 1000 Gat was taken (SPL-21) and then pulverized (PUL-31) to more than 85 % to obtain. Material less than 75 m. A subsample of 0.2 g of the powdered fraction was dissolved in a sodium peroxide solution prior to lithium analysis by ICP-AES according to the ME-ICP82b method. All results passed the laboratory’s QA/QC control and all standards and blanks entered provided results that were within acceptable limits. All disclosed drill intercepts are calculated based on a cutoff grade of less than 0.10% Li2O with a maximum internal dilution of 1 meter. Land basalts adjacent to pegmatite dykes contain up to 0.3% Li2O but were excluded from reported intervals.

Qualified person

The scientific and technical information contained in this press release has been reviewed and approved by Mr. François Goulet, Director, Quebec. He is a registered professional geologist in Quebec and a qualified person within the meaning of Regulation 43-101.

About Exploration Brunswick

Brunswick Exploration is a Montreal-based mineral exploration company listed on the TSX Venture Exchange under the symbol BRW. The Company is dedicated to lithium exploration in less explored areas of Canada. Lithium is a critical metal necessary for global decarbonization and the energy transition. The Company’s objective is to rapidly advance the largest portfolio of preliminary lithium exploration projects in Canada with properties in Quebec, Ontario, Saskatchewan, Manitoba, New Brunswick and Nova Scotia.

Investor Relations/Information Requests

Mr. Killian Charles, President and CEO ([email protected])

Cautionary Statement Regarding Forward-Looking Information

This press release contains forward-looking information within the meaning of applicable Canadian securities laws, which are based on expectations, estimates and projections as of the date of this press release. Forward-looking information involves risks, uncertainties and other factors that could cause actual events, results, performance, prospects and opportunities to differ materially from those expressed or implied by such forward-looking information. Factors that could cause actual results to differ materially from forward-looking information include, but are not limited to, delays or inability to obtain required regulatory, environmental or other approvals for projects; uncertainties regarding the availability and cost of required financing in the future; changes in the stock markets; Inflation; fluctuations in raw material prices; deadlines in project development; other risks associated with the mining exploration and development sector; and the risks described in the Company’s published documents filed on SEDAR at Although the Company believes that the assumptions and factors considered in preparing the forward-looking information in this press release are reasonable, undue reliance should not be placed on such information, which speaks only as of the date of this press release and does not constitute assurance These events may be expected to occur within the specified time periods or at a different time. The Company disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, except as required by law. The TSX Venture Exchange and its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) disclaim any responsibility for the truth or accuracy of this press release.

Photos accompanying this press release are available

These press releases might also interest you

5:40 p.m

Brunswick Exploration Inc. is pleased to announce initial drilling results from the Mirage Project in the Eeyou Istchee-James Bay region of Quebec. The first drilling campaign over 5000 meters enabled the demarcation of four dikes…


On November 23, SUPCON (688777.SH, SUPCON.SW) celebrated its 30th anniversary celebration under the theme “Embracing the New Horizon, Toward a Shared Future” at the Hangzhou Olympic Sports Center. The event brought together more than…


Russell Metals Inc. (RUS:TSX)…

2 dc 2023

EVEEnergyCo., Ltd. (EVEEnergy), a global leader in lithium-ion batteries, will showcase its state-of-the-art consumer battery, power supply and energy storage products at the inaugural exhibition…

1 DC 2023

AscendPerformanceMaterials has begun operations at a new thermal reduction facility in Pensacola, Florida, that will eliminate more than 98% of greenhouse gas emissions associated with adipic acid production. This new equipment…

1 DC 2023

The 28th session of the Conference of the Parties (COP28) to the United Nations Framework Convention on Climate Change (UNFCCC) took place on November 30 in Dubai, United Arab Emirates. This great event whose aim is…

Press release sent on December 4, 2023 at 5:40 p.m. and distributed by:
MDC Visual Case Study Shows There Will Be 100 Million