Highlights include:
- Bonanza grades of 2.57% over 25.8 meters in drill hole MR-23-02, including 14.2 meters at 3.08% Li2O at a vertical depth of 28 meters from Dyke MR-1 in the
North Zone . - Thick intercept of 50.6 m at 1.06% Li2O in drill hole MR-23-07 from Dyke MR-3 in the
Central Zone at a shallow vertical depth of 22 meters. - Another bonanza intercept in drill hole MR-23-14: 16.2 m at 2.75% Li2O including 9.5 meters at 3.30% Li2O at a vertical depth of 40 meters in Dyke MR-4 from the
South Zone . - To date, spodumene-bearing pegmatite dykes have been traced by drilling over a combined strike extent of at least 1,500 meters and remain open in all directions.
- Only 60% of the pegmatite outcrops have been drilled, presenting further drill targets which will be tested in winter 2024.
- Assays are pending for a further 23 drill holes completed during the fall 2023 program.
Mr.
Mr.
Table 1: Mineralized Intercepts from Inaugural Drilling Program at Mirage
Hole ID | Zone | Dyke | From (m) | To (m) | Length (m) | Li2O% | Ta2O5 (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 | Assay 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 through 36 are pending
Mirage Drilling Campaign Overview
The aim of the 2023 drilling campaign was to test at shallow depths (less than 150 meters vertical depth) the pegmatite dykes mapped from surface to determine their geometry and orientation. Thirty-six (36) diamond drill holes were completed (see Figure 1) for a total of 5,090 meters drilled to date. Thirty-three (33) of the 36 holes drilled during the 2023 campaign intercepted mineralized pegmatites.
The mineralized pegmatite dykes discovered at the
This inaugural drilling campaign has successfully extended the mineralized pegmatites over a combined distance of 1.5 km and demonstrates excellent continuity with several high-grade zones intersected to date. All pegmatite dykes remain open in all directions. In addition, several other outcropping spodumene-bearing pegmatites remain to be drill-tested.
Figure 1: Surface Map of the
The MR-3 pegmatite dyke intercepted in the
A second, unmapped dyke (MR-3A) was identified in drill hole MR-23-08, marking the first blind discovery of a pegmatite dyke at Mirage. The hole only partially intercepted the margin of the dyke and is not representative of the grade or width of the MR-3A Dyke. Drill hole MR-23-35 targeted this new dyke and assays are still pending.
Figure 2: Cross
Figure 3: Cross
Four shallow drill holes were carried out in the
Preliminary results from the
Figure 4: Cross
QAQC
All drill core samples were collected under the supervision of BRW employees and contractors. The drill core was transported by helicopter and by truck from the drill platform to the core logging facility in Val-d’Or. Each core was then logged, photographed, tagged, and split by diamond saw before being sampled. All pegmatite intervals were sampled at approximately 1m intervals to ensure representativity, and ¼ core splits were inserted regularly as duplicates. Samples were bagged, and blanks and certified reference materials for lithium were inserted at regular intervals. Groups of samples were placed in larger bags, sealed with numbered tags, in order to maintain a chain of custody. The sample bags were transported from BRW contractor facility to the ALS laboratory in Val-d’Or. All sample preparation and analytical work was performed by ALS. Samples were crushed in order for 70% of the material to pass through a 2mm screen (method CRU-31), a riffle split was made of a 1,000g sub-sample (SPL-21), and the split sample pulverized (PUL-31) to obtain more than 85% of the material inferior to 75µm. A 0.2g sub-sample of the pulverized fraction was dissolved in a sodium peroxide solution, prior to lithium analysis by ICP-AES according to the ALS method ME-ICP82b. All results passed the QA/QC screening at the lab and all inserted standard and blanks returned results that were within acceptable limits. All reported drill intersections are calculated on the basis of a lower cutoff grade of 0.10% Li2O, with maximum internal dilution of 1 metre. Host basalts adjacent to the dykes grade up to 0.3% Li2O but were excluded from the reported intersections.
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Figure 1
Surface Map of the Mirage Project and Drill Holes Completed to Date
Figure 2
Cross Section Along Central Zone
Figure 3
Cross Section Along North Zone
Figure 4
Cross Section Along South Zone
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