FRONTIER LITHIUM INTERSECTS 136.7M OF 1.32% Li2O AND EXTENDS SPARK PEGMATITE
Highlights
- DDH PL-GDH-24-24 intersected 136.7m of pegmatite from surface averaging 1.32% Li2O.
- DDH PL-GDH-26-24 intersected 53.2m of pegmatite from surface averaging 1.24% Li2O and 26.9m from 222.0 to 248.8m averaging 2.12% Li2O and 0.7% Rb2O.
- Including 8.4m from 45.1 to 53.5m averaging 2.33% Li2O
- Including 5.0m from 116.8 to 121.8m of elevated Ta (685 ppm Ta2O5) and Sn (1,465 ppm SnO2).
- Including 7.0 m from 240.8 to 247.9 averaging 2.97% Li2O and 1.04% Rb2O
- DDH PL-GDH-27-24 intersected 48.1m of pegmatite from surface averaging 1.93% Li2O and another 49.8m from 129.7 to 179.5m averaging 2.23% Li2O with elevated Cs (0.61% Cs2O) and Ta (461 ppm Ta2O5)
- Including 8.3m from 31.7 to 40.0m averaging 3.33% Li2O
- Including 5.9m from 144.1 to 150.0m of 3.4% Li2O and 2.75% Cs2O
- DDH PL-134-24 stepped out 200m to the west as a condemnation hole, intersected 26.8 m of pegmatite from 18.9 to 45.7m confirming that the Spark pegmatite remains open.
"The geotechnical winter diamond drill program yielded consistent drill intersections with the two northern holes confirming and extending a high-grade lithium zone, with enriched cesium and tantalum. The program also extended the Spark pegmatite 200 metres to the west," commented
During the winter season, four geotechnical holes (PL-GDH-24 to 27-24) were drilled from the top of Spark in four directions to test pit-wall stability and hydrogeological conditions. As expected, mineralized pegmatite was intersected in all holes. A fifth condemnation hole was drilled 200m to the west, near a proposed overburden stockpile. Figure 1 shows the project area from the Knox camp to the Mining Lease area. Figure 2 is a map of the Spark deposit highlighting the 2024 drilling and displaying all drill holes.
In addition to the diamond drilling at Spark, during February-March geotechnical drilling continued on potential infrastructure sites including stockpiles, tailing management, mill and other related facilities. Environmental studies and monitoring continued and well as community engagement. All work was conducted out of the Knox camp situated on the winter road to
Table 1 details the drill holes with mineralized intersections from the Spark area while Tables 2 summarize all drill holes completed at Spark in 2024.
Table 1: Summary of 2024 Drill Hole Intersections at Spark
PL-GDH-24-24 |
Collared on the southern end of the main Spark pegmatite zone, hole was designed by DRA Global as part of a geomechanical-hydrogeological program to test the hydraulic conductivity with packer testing and to provide rock mechanics data for the pit design, in support of a DFS study. DDH intersected the main spark pegmatite and a sub-horizontal fault zone as expected. |
|||||||||||
Zone |
From (m) |
To (m) |
Width (m) |
Li2O (%) |
Cs2O (%) |
Ta2O5 (ppm) |
Nb2O5 (ppm) |
SnO2 (ppm) |
Rb2O (%) |
Unit |
|
|
|
0.6 |
137.3 |
136.7 |
1.32 |
0.018 |
95 |
81 |
59 |
0.27 |
Pegmatite w/ minor mafics |
||
|
including |
24.8 |
33.6 |
8.8 |
1.74 |
0.015 |
134 |
96 |
42 |
0.30 |
Pegmatite |
|
|
including |
44.3 |
49.2 |
4.9 |
1.87 |
0.009 |
71 |
91 |
39 |
0.28 |
Pegmatite |
PL-GDH-25-24 |
Collared on the SW edge of the main Spark pegmatite zone where it begins to break up into smaller pods, the hole was designed by DRA Global as part of a geomechanical-hydrogeological program to test the hydraulic conductivity with packer testing and to provide rock mechanics data for the pit design, in support of a DFS study. An unexpected 12.8m wide Aplite zone was intersected grading 1.77% Li2O. |
||||||||||
Zone |
From (m) |
To (m) |
Width (m) |
Li2O (%) |
Cs2O (%) |
Ta2O5 (ppm) |
Nb2O5 (ppm) |
SnO2 (ppm) |
Rb2O (%) |
Unit |
|
|
41.2 |
54.0 |
12.8 |
1.77 |
0.025 |
97 |
75 |
54 |
0.37 |
Aplite |
DDH PL-GDH-26-24 |
Collared on the NW edge of the main Spark pegmatite zone, the hole was designed by DRA Global as part of a geomechanical-hydrogeological program to test the hydraulic conductivity with packer testing and to provide rock mechanics data for the pit design, in support of a DFS study. The hole intersected the northern pegmatite contact as expected and was terminated due to time constraints in an unexpected pegmatite zone to the north grading 2.12% Li2O over 26.9m. The hole will be extended at a later date. |
|||||||||||
Zone |
From (m) |
To (m) |
Width (m) |
Li2O (%) |
Cs2O (%) |
Ta2O5 (ppm) |
Nb2O5 (ppm) |
SnO2 (ppm) |
Rb2O (%) |
Unit |
|
|
|
0.3 |
53.5 |
53.2 |
1.24 |
0.018 |
62 |
91 |
66 |
0.27 |
Pegmatite + Aplite w/ minor mafics |
||
|
including |
33.4 |
37.9 |
4.5 |
2.28 |
0.010 |
83 |
118 |
86 |
0.20 |
Pegmatite |
|
|
including |
45.1 |
53.5 |
8.4 |
2.33 |
0.010 |
81 |
105 |
55 |
0.23 |
Pegmatite |
|
|
116.8 |
121.8 |
5.0 |
0.33 |
0.014 |
685 |
107 |
1465 |
0.11 |
Pegmatite (enriched Ta + Sn) |
||
|
222.0 |
248.8 |
26.9 |
2.12 |
0.047 |
266 |
65 |
252 |
0.70 |
Aplite |
||
|
including |
240.8 |
247.9 |
7.0 |
2.97 |
0.065 |
104 |
38 |
103 |
1.04 |
Aplite |
DDH PL-GDH-27-24 |
Collared on the NE end of the main Spark pegmatite zone, the hole was designed by DRA Global as part of a geomechanical-hydrogeological program to test the hydraulic conductivity with packer testing and to provide rock mechanics data for the pit design, in support of a DFS study. The hole intersected the northern pegmatite contact as expected and an unexpected pegmatite zone to the north grading 2.23% Li2O over 49.8m with anomalous Cs up to 2.8% Cs2O over 5.9m |
|||||||||||
Zone |
From (m) |
To (m) |
Width (m) |
Li2O (%) |
Cs2O (%) |
Ta2O5 (ppm) |
Nb2O5 (ppm) |
SnO2 (ppm) |
Rb2O (%) |
Unit |
|
|
|
0.8 |
48.9 |
48.1 |
1.93 |
0.026 |
95 |
87 |
78 |
0.30 |
Aplite |
||
|
including |
17.2 |
22.0 |
4.8 |
2.53 |
0.023 |
60 |
63 |
67 |
0.27 |
Aplite |
|
|
including |
31.7 |
40.0 |
8.3 |
3.33 |
0.014 |
79 |
78 |
65 |
0.19 |
Aplite |
|
|
129.7 |
179.5 |
49.8 |
2.23 |
0.613 |
461 |
57 |
364 |
0.89 |
Aplite |
||
|
including |
144.1 |
150.0 |
5.9 |
3.40 |
2.755 |
290 |
21 |
123 |
0.85 |
Pegmatite (enriched Li + Cs) |
DDH PL-134-24 |
PL-134-24 was designed as a condemnation hole, stepped out 200m west of the Spark pegmatite to define planned infrastructure for the DFS study. The hole intersected 45.69m of pegmatite, extending the SW zone of the Spark pegmatite further to the west. Although Li2O values fall below cutoff, the zone is expected to continue at depth with stronger spodumene mineralization as previously indicated in DDH holes to the east. The intersection confirms that the Spark pegmatite continues to run to the west and remains open. |
|||||||||||
Zone |
From (m) |
To (m) |
Width (m) |
Li2O (%) |
Cs2O (%) |
Ta2O5 (ppm) |
Nb2O5 (ppm) |
SnO2 (ppm) |
Rb2O (%) |
Unit |
|
|
|
18.9 |
45.7 |
26.8 |
0.31 |
0.009 |
78 |
108 |
56 |
0.39 |
Pegmatite-Aplite |
||
|
including |
25.3 |
28.1 |
2.8 |
2.11 |
0.008 |
59 |
94 |
56 |
0.22 |
Pegmatite |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Table 2: Summary of 2024 Drilling at Spark
DDHNo |
Date Drilled |
|
Collar Orient |
Metres Drilled |
||||||
Start |
End |
Easting |
Northing |
(mASL) |
|
Dip |
Start |
End |
||
2024 Geotech Program |
PL-GDH-24-24 |
|
|
472,759 |
5,829,448 |
351.7 |
128 |
-72 |
0 |
248.6 |
PL-GDH-25-24 |
|
|
472,699 |
5,829,432 |
352.0 |
228 |
-72 |
0 |
245.8 |
|
PL-GDH-26-24 |
|
|
472,692 |
5,829,527 |
355.0 |
323 |
-72 |
0 |
248.8 |
|
PL-GDH-27-24 |
|
|
472,763 |
5,829,539 |
360.0 |
019 |
-70 |
0 |
248.8 |
|
PL-134-24 |
|
|
472,272 |
5,829,220 |
329.0 |
001 |
-46 |
0 |
205.5 |
|
Total metres drilled |
1197.5 |
Due Diligence
All scientific and technical information in this release has been reviewed and approved by Garth Drever, P.Geo., the qualified person ("QP") under the definitions established by National Instrument 43-101 - Standards of Disclosure for Mineral Projects. Under Frontier's QA/QC procedures, all drilling was completed by
The PAK lithium project contains
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