HALIFAX, NS / ACCESSWIRE / April 30, 2024 / Silver Tiger Metals Inc. (TSXV:SLVR)(OTCQX:SLVTF) ("Silver Tiger" or the "Company") is pleased to provide an update on the Company's ongoing Pre-Feasibility Study ("PFS") drilling program on the Stockwork gold deposit on its El Tigre Project in Sonora, Mexico. Silver Tiger has completed 23,500 metres of a 25,000 metre drilling program focused on expanding the Mineral Resource, up-grading the classification, completing metallurgical testwork and geotechnical studies as it progresses from an exploration to a development project. The value-added PFS progress is on schedule for publication in H2-2024.
Three main areas of the Stockwork gold deposit are being targeted and show potential for expansion: a) the footwall, b) the hanging wall and c) bottom ‘keel'. After releasing the first 75 drill holes of the program, the Company is pleased to announce conversion, expansion and derisking of the potential ‘Starter Stockwork Zone'.
The Stockwork gold deposit, comprised of the Footwall, Hanging Wall and high-grade Keel Zones, is seen in the below highlighted intercepts:
Drill hole ET-23-541: 79.5 metres grading 0.75 g/t gold equivalent or 56.1 g/t silver equivalent from 92.5 to 172.0 metres, consisting of 0.52 g/t gold and 17.4 g/t silver INCLUDING 26.5 metres grading 1.19 g/t gold equivalent or 89.3 g/t silver equivalent from 94.0 to 120.5 metres consisting of 1.08 g/t gold and 8.0 g/t silver in the Hanging Wall Zone.
Drill hole ET-23-543: 40.2 metres grading 1.21 g/t gold equivalent or 90.7 g/t silver equivalent from 148.0 to 188.2 metres, consisting of 0.84 g/t gold and 27.9 g/t silver INCLUDING 23.0 metres grading 1.72 g/t gold equivalent or 129.3 g/t silver equivalent from 152.0 to 175.0 metres consisting of 1.22 g/t gold and 37.9 g/t silver in the Keel Zone.
Drill hole ET-23-548: 71.0 metres grading 0.67 g/t gold equivalent or 50.6 g/t silver equivalent from 0.0 to 71.0 metres, consisting of 0.62 g/t gold and 3.9 g/t silver INCLUDING 18.5 metres grading 1.36 g/t gold equivalent or 101.7 g/t silver equivalent from 39.5 to 58.0 metres consisting of 1.32 g/t gold and 2.4 g/t silver in the Footwall Zone.
Drill hole ET-23-550: 81.1 metres grading 0.94 g/t gold equivalent or 70.3 g/t silver equivalent from 43.5 to 124.5 metres, consisting of 0.90 g/t gold and 3.0 g/t silver INCLUDING 32.0 metres grading 1.36 g/t gold equivalent or 102.1 g/t silver equivalent from 54.0 to 86.0 metres consisting of 1.31 g/t gold and 3.6 g/t silver in the Footwall Zone (Figure 2) and 21.0 metres grading 0.68 g/t gold equivalent or 50.1 g/t silver equivalent from 0.0 to 21.0 metres, consisting of 0.53 g/t gold and 10.5 g/t silver at the top of the hole.
Silver Tiger's CEO, Glenn Jessome, stated, "As we continue receiving promising assay results, it is apparent that the developing "Footwall" and "Keel Zones" shows excellent grade and continuity." Mr. Jessome further stated, "The results may increase the updated MRE associated with the PFS-level study, as well as further de-risk the project."
Figure 1 : Stockwork Zone - Plan View
Figure 2: Stockwork Zone Cross Section 4100N
Highlights from the on-going Pre-Feasibility Study Drilling Program include the following:
Expanding known mineralization by 10 to 15%, to the footwall and hanging wall zones, as well as the higher-grade ‘keel' at PEA pit bottom associated with the El Tigre and SK Veins;
Converting first two to three years of mineralized material in the potential ‘Starter Stockwork Zone' from Indicated Mineral Resource to Measured;
Converting a significant portion of the 2 km strike length ‘ultimate' PEA pit-constrained Inferred Mineral Resource to Indicated;
Completion of enhanced PFS Metallurgical Drilling, with samples underway comminution and leach testing; and
Completion of enhanced PFS Geotechnical Drilling, with samples undergoing testing.
Mineral Resource Drilling
P&E Mining Consultants Inc. ("P&E") of Brampton, Ontario completed the initial MRE in 2017. On Oct 27, 2023, P&E released an updated El Tigre Project NI 43-101 and NI 43-01 F1 compliant MRE technical report titled "Technical Report and Updated Mineral Resource Estimate of the El Tigre Silver-Gold Project, Sonora, Mexico" authored by William Stone, Ph.D., P.Geo.,Yungang Wu, P.Geo.,
Fred H. Brown, P.Geo., Jarita Barry, P.Geo., David Burga, P.Geo., D. Grant Feasby, P.Eng., Eugene Puritch, P.Eng., FEC, CET and David Salari, P.Eng. The MRE has a pit-constrained Indicated Mineral Resource totaling 43.0 million tonnes containing 818 thousand ounces AuEq grading 0.59 g/t AuEq; and a pit-constrained Inferred Mineral Resource of 11.5 million tonnes containing 267 thousand ounces AuEq grading 0.72 g/t AuEq (see update MRE press release dated September 12th 2023).
PEA-level bench optimization of the pit-constrained Mineral Resource highlighted the higher-grade (~0.80 gpt AuEq), low strip ratio (~0.3) potential Starter Stockwork Zone which contains 5.7 million tonnes of mineralized material (see PEA press release dated November 1st, 2023). Recommendations of the PEA-level study included increasing Mineral Resource confidence in potential ‘Starter Stockwork Zone' and additional exploratory drilling to target the 1) Footwall, 2) Hanging Wall and 3) ‘Keel' areas of the Stockwork Zone. P&E were again retained to lead the current El Tigre PFS-level study with 23,500 metres of the program complete (Figure 1). Complete and final assay results are listed in Table 1.
Below, highlighted intersections are enumerated with reference to the three (3) zones targeted:
Drill hole ET-23-541: Confirms location and grade of the Hanging Wall Zone, and downhole, expands depth of high-grade Keel Zone (Figure 1);
Drill hole ET-23-543: Expands depth and strike of Keel Zone over the 2023 MRE (Figure 1);
Drill hole ET-23-545: Expands Footwall Zone by 20 m to east over 2023 MRE (Figure 1); and
Drill hole ET-23-550: Expands Footwall Zone by 40 m to east over 2023 MRE (Figure 2).
Table 1-Mineral Resource Drill Hole Results
AuEq Total (2)
AgEq Total (2)
Hole ID
Comment
From
To
Length(1)
Gold
Silver
m
m
m
g/t
g/t
g/t
g/t
ET-23-532
STOCKWORK ZONE
22.0
74.5
52.5
0.48
5.3
0.56
41.7
including
29.5
57.0
27.5
0.73
5.4
0.80
60.1
ET-23-533
STOCKWORK ZONE
30.0
44.0
14.0
0.86
24.0
1.18
88.2
STOCKWORK ZONE
59.7
66.5
6.8
0.36
2.2
0.39
29.3
STOCKWORK ZONE
121.2
144.0
22.9
0.04
28.7
0.42
31.6
including
141.0
144.0
3.0
0.08
102.0
1.44
108.0
ET-23-534
STOCKWORK ZONE
8.4
16.8
8.5
0.14
15.4
0.35
26.2
STOCKWORK ZONE
38.7
57.5
18.9
0.45
2.0
0.47
35.5
ET-23-535
STOCKWORK ZONE
15.5
29.1
13.6
0.85
3.8
0.90
67.6
Mining VOID
29.1
32.2
3.1
*
*
*
*
STOCKWORK ZONE
32.2
50.8
18.6
0.13
7.1
0.23
17.1
STOCKWORK ZONE
56.5
64.0
7.5
0.29
5.0
0.36
27.1
ET-23-536
STOCKWORK ZONE
89.0
99.0
10.0
0.78
3.1
0.82
61.4
STOCKWORK ZONE3
112.3
158.0
45.7
0.38
7.9
0.49
36.4
Mining VOID
144.1
145.5
1.4
*
*
*
*
STOCKWORK ZONE
123.0
133.0
10.0
0.58
8.5
0.70
52.4
STOCKWORK ZONE
197.0
207.0
10.0
0.14
15.7
0.35
26.1
ET-23-537
STOCKWORK ZONE
88.0
90.0
2.0
1.39
2.5
1.42
106.5
STOCKWORK ZONE
101.0
140.0
39.0
0.37
11.8
0.52
39.3
STOCKWORK ZONE
168.0
182.0
14.0
0.30
15.2
0.50
37.7
El Tigre vein
206.0
210.0
4.0
2.93
46.5
3.55
266.6
ET-23-539
STOCKWORK ZONE
0.0
42.7
42.7
0.36
42.9
0.94
70.2
including
22.5
41.2
18.7
0.43
74.8
1.42
106.8
ET-23-540
STOCKWORK ZONE4
128.0
173.0
45.0
0.50
9.1
0.63
46.9
including
158.0
162.5
4.5
0.85
52.1
1.54
115.6
ET-23-541
STOCKWORK ZONE
92.5
172.0
79.5
0.52
17.4
0.75
56.1
including
94.0
120.5
26.5
1.08
8.0
1.19
89.3
Seitz Kelly
187.0
197.2
10.2
0.14
26.8
0.50
37.6
ET-23-543
STOCKWORK ZONE5
148.0
188.2
40.2
0.84
27.9
1.21
90.7
Including
152.0
175.0
23.0
1.22
37.9
1.72
129.3
Mining VOID
183.0
184.7
1.7
*
*
*
*
ET-23-545
STOCKWORK ZONE
74.5
125.0
50.5
0.32
28.1
0.69
52.1
including
87.5
112.0
24.5
0.47
57.0
1.23
92.0
El Tigre vein
93.3
95.1
1.8
2.22
549.4
9.55
715.9
ET-23-547
STOCKWORK ZONE
99.0
117.0
18.0
0.53
1.5
0.55
41.0
STOCKWORK ZONE
132.9
155.0
22.1
0.96
2.6
1.00
74.9
including
143.0
152.0
9.0
1.71
2.3
1.74
130.2
Seitz Kelly
218.0
221.0
3.0
1.48
0.8
1.49
111.4
ET-23-548
STOCKWORK ZONE
0.0
71.0
71.0
0.62
3.9
0.67
50.6
including
39.5
58.0
18.5
1.32
2.4
1.36
101.7
STOCKWORK ZONE
86.3
97.5
11.3
0.68
0.7
0.69
52.0
ET-23-550
STOCKWORK ZONE
0.0
21.0
21.0
0.53
10.5
0.67
50.1
STOCKWORK ZONE
43.5
124.5
81.1
0.90
3.0
0.94
70.3
including
54.0
86.0
32.0
1.31
3.6
1.36
102.1
Notes:
Not true width.
Silver Equivalent ("AgEq") ratios are based on a silver to gold price ratio of 75:1 (Au:Ag).
Excludes 1.40m of Mining void
Excludes 1.70m of Mining void
Excludes 2.00m of Mining void
Table 2-Drill Hole Locations
Hole ID
Easting
Northing
Elevation
Azimuth
Dip
Length
ET-23-532
671,190.4
3,384,252.8
1993.5
90
-44
90.5
ET-23-533
671,071.1
3,383,868.4
1867.9
90
-45
152.0
ET-23-534
671,189.9
3,384,300.6
1989.4
90
-45
96.6
ET-23-535
671,187.3
3,384,321.6
1987.9
90
-45
90.5
ET-23-536
671,044.6
3,384,272.1
1978.6
90
-45
228.0
ET-23-537
671,235.0
3,383,485.4
2014.3
90
-70
291.0
ET-23-539
671,167.4
3,384,023.7
1933.0
90
-45
154.5
ET-23-540
671,043.9
3,384,272.1
1978.5
90
-54
241.0
ET-23-541
671,058.4
3,384,026.1
1925.7
90
-50
215.9
ET-23-543
671,043.6
3,384,271.9
1978.4
90
-61
261.0
ET-23-545
671,211.2
3,383,666.6
2001.0
65
-50
150.0
ET-23-547
671,047.5
3,384,314.8
1983.5
90
-45
221.0
ET-23-548
671,196.8
3,384,073.1
1963.0
90
-45
150.0
ET-23-550
671,180.3
3,384,125.6
2002.6
90
-45
166.5
Figure 3: El Tigre - Conceptual Cross-Section Showing Mineralization Styles
Figure 4: El Tigre-Longitudinal Projection Showing Exploration Potential
About Silver Tiger and the El Tigre Historic Mine District
Silver Tiger Metals Inc. is a Canadian company whose management has more than 25 years' experience discovering, financing and building large hydrothermal silver projects in Mexico. Silver Tiger's 100% owned 28,414 hectare historic El Tigre Mining District is located in Sonora, Mexico. Principled environmental, social and governance practices are core priorities at Silver Tiger.
The El Tigre historic mine district is located in Sonora, Mexico and lies at the northern end of the Sierra Madre silver and gold belt which hosts many epithermal silver and gold deposits, including Dolores, Santa Elena and Las Chispas at the northern end. In 1896, gold was first discovered on the Property in the Gold Hill area and mining started with the Brown Shaft in 1903. The focus soon changed to mining silver veins in the area with production coming from 3 parallel veins the El Tigre Vein, the Seitz Kelley Vein and the Sooy Vein. Underground mining on the middle El Tigre Vein extended 1,450 metres along strike and was mined on 14 levels to a depth of approximately 450 metres. The Seitz Kelley Vein was mined along strike for 1 kilometre to a depth of approximately 200 metres. The Sooy Vein was only mined along strike for 250 metres to a depth of approximately 150 metres. Mining abruptly stopped on all three of these veins when the price of silver collapsed to less than US20￠ per ounce with the onset of the Great Depression. By the time the mine closed in 1930, it is reported to have produced a total of 353,000 ounces of gold and 67.4 million ounces of silver from 1.87 million tons (Craig, 2012). The average grade mined during this period was over 2 kilograms silver equivalent per ton.
The El Tigre silver and gold deposit is related to a series of epithermal veins controlled by a north-south trending structure cutting across the andesitic and rhyolitic tuffs of the Sierra Madre Volcanic Complex within a broad silver and gold mineralized prophylitic alteration zone developed in the El Tigre Formation that can be up to 150 metres wide. The veins dip steeply to the west and are typically 0.5 metre wide; however, locally can be up to 5 metres in width. The veins, structures and mineralized zones outcrop on surface and have been traced for 5.3 kilometres along strike in our brownfield exploration area. Historical mining and exploration activities focused on a 1.6-kilometre portion of the southern end of the deposits, principally on the El Tigre, Seitz Kelly and Sooy veins. The under explored Caleigh, Benjamin, Protectora and the Fundadora exposed veins continue north for more than 3 kilometres. Silver Tiger has delivered its updated NI 43-101 compliant Mineral Resource Estimate and PEA and is currently drilling to update its Mineral Resource Estimate and publish a PFS.
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Procedure, Quality Assurance / Quality Control and Data Verification
The diamond drill core (HQ size) is geologically logged, photographed and marked for sampling. When the sample lengths are determined, the full drill core is sawn with a diamond blade drill core saw with one half of the drill core being bagged and tagged for assay. The remaining half portion is returned to the drill core trays for storage and/or for metallurgical test work.
The sealed and tagged drill core sample bags are transported to the Bureau Veritas facility in Hermosillo, Mexico. Bureau Veritas crushes the samples (Code PRP70-250) and prepares 200-300 gram pulp samples with ninety percent passing Tyler 200 mesh (Code PUL85). The pulps are assayed for gold using a 30-gram charge by fire assay (Code FA630) and over limits greater than 10 grams per tonne are re-assayed using a gravimetric finish (Code FA530). Silver and multi-element analysis is completed using total digestion (Code MA200 Total Digestion ICP). Over limits greater than 100 grams per tonne silver are re-assayed using a gravimetric finish (Code FA530).
Quality assurance and quality control ("QA/QC") procedures monitor the chain-of-custody of the samples and includes the systematic insertion and monitoring of appropriate reference materials (certified reference materials, blanks and duplicates) into the sample strings. The results of the assaying of the QA/QC material included in each batch are tracked to ensure the integrity of the assay data. All results stated in this announcement have passed Silver Tiger's QA/QC protocols.
Qualified Person
David R. Duncan, P. Geo., V.P. Exploration of the Corporation, is the Qualified Person for Silver Tiger as defined under National Instrument 43-101. Mr. Duncan has reviewed and approved the scientific and technical information in this press release.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
This News Release includes certain "forward-looking statements". All statements other than statements of historical fact included in this release, including, without limitation, statements regarding potential mineralization, Mineral Resources and Mineral Reserves, the ability to convert Inferred Resources to Indicated Resources, the ability to complete future drilling programs and infill sampling, the ability to extend Mineral Resource blocks, the similarity of mineralization at El Tigre to Delores, Santa Elena and Chispas, exploration results, and future plans and objectives of Silver Tiger, are forward-looking statements that involve various risks and uncertainties. Forward-looking statements are frequently characterized by words such as "may", "is expected to", "anticipates", "estimates", "intends", "plans", "projection", "could", "vision", "goals", "objective" and "outlook" and other similar words. Although Silver Tiger believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, there can be no assurance that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from Silver Tiger's expectations include risks and uncertainties related to exploration, development, operations, commodity prices and global financial volatility, risk and uncertainties of operating in a foreign jurisdiction as well as additional risks described from time to time in the filings made by Silver Tiger with securities regulators.
