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Tinka Drills 145 Metres at 10.9% Zinc Including 29 Metres at 20% Zinc at Ayawilca

VANCOUVER, BC / ACCESSWIRE / March 6, 2023 / Tinka Resources Limited ("Tinka" or the "Company") (TSXV:TK)(BVL:TK)(OTCQB:TKRFF) is pleased to announce results for six recent drill holes from the Company's ongoing infill and resource expansion drill program at the Ayawilca project in Peru. All six drill holes are infill holes from the South Ayawilca area. Hole A23-212 returned much better than expected results with a thick and high-grade zinc intersection of 145.2 metres grading 10.9% zinc (estimated true thickness of ~ 100 metres) including 29.3 metres grading 20.2% zinc from a shallow depth of 158 metres. The drill program at South Ayawilca continues to exceed our expectations with respect to the continuity of the ultra high zinc grades. Drilling is expected to continue with two rigs until the end of April.

Key highlights of recent South Ayawilca drill holes

  • Hole A23-212:

    • 145.2 metres at 10.9% zinc from 158.2 metres depth, including:

      • 29.3 metres at 20.2% zinc from 158.2 metres depth, and

      • 10.6 metres at 14.9% zinc from 200.8 metres depth, and

      • 9.8 metres at 15.1% zinc from 239.1 metres depth, and

      • 3.6 metres at 35.0% zinc from 262.6 metres depth, and

      • 25.8 metres at 13.1% zinc from 277.6 metres depth.

    • The wide interval includes 4.4 metres of no recovery assumed zero grade in three separate zones.

  • Hole A22-208:

    • 4.6 metres at 32.4% zinc from 105.2 metres depth; and

    • 9.9 metres at 9.7% zinc from 142.1 metres depth; and

    • 71.2 metres at 8.8% zinc from 168.8 metres depth, including:

      • 37.7 metres at 12.8% zinc from 194.0 metres depth, including

        • 2.7 metres at 45.2% zinc from 188.0 metres depth, and

      • 20.0 metres at 16.9% zinc from 211.9 metres depth; and

    • 1.7 metres at 36.3% zinc from 265.9 metres depth.

  • Hole A22-206:

    • 37.8 metres at 10.5% zinc from 153.5 metres depth, including:

      • 23.4 metres at 15.2% zinc from 168.0 metres depth; and

    • 2.7 metres at 45.2% zinc from 188.0 metres depth and 1.7 metres at 15.9% zinc from 200.3 metres.

  • Hole A23-215:

    • 5.2 metres at 11.2% zinc from 144.4 metres depth; and

    • 4.1 metres at 33.6% zinc from 190.0 metres depth; and

    • 30.1 metres at 8.6% zinc from 263.4 metres depth, including

      • 5.6 metres at 21.3% zinc from 264.5 metres depth.

  • Hole A22-210: 2.7 metres at 16.2% zinc from 85.6 metres depth.

  • Hole A22-201: An extension of hole A17-066 (extended by 59 m) did not intersect significant mineralization.

  • A total of 10,000 metres have now been drilled for 30 drill holes in the 2022-23 drill program with a further 1,000 metres (approximately) to be completed. Seven holes have results pending.

True thicknesses of the mineralized intercepts are estimated to be at least 70% of the downhole thicknesses.

Dr. Graham Carman, Tinka's President and CEO, stated: "Hole A23-212 is without doubt Tinka's best ever hole at Ayawilca in terms of thickness and grade of the zinc mineralization - the hole intercepted a continuous zone of massive sulphide mineralization grading 11% zinc over an interpreted true thickness of approximately 100 metres. This hole is one of five fan holes reported here, following-up on the spectacular high-grade intercept of 39 metres grading 20% zinc including 10.4 metres at 42% zinc in hole A22-202 (link to news release). The results of these fan holes prove that there is excellent continuity of the high-grade zinc mineralization along a 200-metre strike length of folded limestone at the western extremity of the South Ayawilca deposit. This ultra high-grade zinc zone, which we are continuing to define and extend with more drilling, is expected to be very important for the project as it is located at the shallowest part of the South Ayawilca resource and therefore likely to be accessed early in the mine plan."

"Importantly, exploration opportunities still exist to expand this ultra high-grade mineralization. The drill program will continue until April with at least two more holes to be drilled at South Ayawilca. Several additional holes remain to be reported including five holes from West Ayawilca. Next steps for the project, following completion of the drill program, include an update of the mineral resource estimations and the evaluation of alternatives to fast track Ayawilca towards development."

Discussion of the geology

Table 1 summarises the highlighted drill intercepts for the six drill holes from South Ayawilca in this news release. The Company has now completed approximately 10,000 metres of drilling in 30 holes in the 2022-2023 resource definition-expansion program (see Table 2). A total of 23 holes have now been reported (see also previous releases Oct 11 2022 , Nov 21 2022 , Jan 9 2023 and Jan 24 2023. Table 2 summarises the complete list of holes drilled in the 2022-23 drill program. A drill hole map is presented in Figure 1.

This news release includes five holes drilled in a fan pattern from the same platform (holes A22-206, 208, 210, A23-212 and 215) targeting the core of an overturned fold ‘anticline' covering approximately 200 metres of strike length (north-south). An impermeable quartz sandstone, a unit of the local Goyllar formation, forms the footwall to the massive sulphide zone which has replaced the favourable Pucara limestone in the core of the anticline with substantial quantities of zinc. The sandstone is folded around the Pucara limestone forming an efficient trap which has concentrated the zinc mineralization in the hinge of the fold and along the contacts with the sandstone. High-grade zinc is associated with semi-massive sulphide (30-70% sulphides) to massive sulphide (70-100% sulphides) mineralization as sulphide replacements of the limestone and as veins into the sandstone. The sulphides are dominated by sphalerite, pyrite, and iron-rich carbonates (siderite) with minor magnetite, pyrrhotite, and quartz. Sphalerite (both high and low-iron varieties) typically comprises between 30% and 90% of the total sulphides.

An interpretation of the zinc mineralization in the recent drill holes is highlighted in Figure 2. The massive sulphide body dips at a moderate angle to the east. A major northeast-southwest trending fault located at the northern edge of the sulphide body truncates the mineralization to the north. This "060 Fault" (shown in Figure 2) could also be an important conduit for the mineralization at Ayawilca.

Figure 3 is an example of the ultra high-grade zinc cores from A23-212.

The final hole reported in this news release, A22-201, is a deepened exploration hole from 2017 (A17-077) to 430 m depth, targeting the possible extension of high-grade zinc mineralization intersected in nearby hole A22-195 (6m at 18.8% Zn from 392.6m depth) on the eastern side of South Ayawilca (see link). On this occasion, A22-201 did not intersect any significant mineralization possibly as a result of the thinning out of the manto structure in A22-195.

Table 1. Summary of drill hole results in this release from South Ayawilca

Hole

From (m)

To (m)

Interval (m)

Zinc %

Lead %

Silver g/t

Indium ppm

Notes

A22-201

no significant results

Extension of hole A17-066

A22-206

153.55

191.35

37.80

10.54

0.06

17

181

incl

168.00

191.35

23.35

15.23

0.07

22

284

incl

188.00

190.65

2.65

45.21

0.14

76

1730

and

200.30

202.00

1.70

15.92

0.02

9

187

A22-208

105.20

109.75

4.55

32.39

0.04

32

354

and

125.40

127.25

1.85

17.33

0.04

15

87

and

142.15

152.00

9.85

9.74

0.19

20

97

and

168.80

240.00

71.20

8.75

0.51

33

55

incl

194.00

231.65

37.65

12.76

0.75

44

89

incl

211.70

231.65

19.95

16.92

0.01

6

87

and

265.90

267.55

1.65

36.30

0.15

88

2940

A22-210

85.60

88.30

2.70

16.22

0.39

92

216

and

157.20

164.20

7.00

4.39

0.45

79

4

A23-212

124.30

126.10

1.80

32.74

0.02

21

58

and

158.20

303.40

145.20

10.86

0.19

31

229

1

incl

158.20

187.45

29.25

20.17

0.04

21

418

incl

200.80

211.40

10.60

14.87

0.20

48

426

2

incl

239.10

248.85

9.75

15.14

0.04

19

244

incl

262.60

266.20

3.60

34.96

0.07

50

868

incl

277.60

303.40

25.80

13.06

0.61

86

312

3

A23-215

144.35

149.50

5.15

11.24

0.01

22

247

incl

144.35

145.45

1.10

31.46

0.03

32

811

and

190.00

194.10

4.10

33.59

0.19

72

1263

incl

190.70

192.80

2.10

42.82

0.34

118

1629

and

263.40

293.50

30.10

8.61

0.14

38

91

incl

264.50

270.10

5.60

21.34

0.06

36

451

incl

283.10

292.60

9.50

12.78

0.29

58

9

1

includes 4.4 m of no recovery assumed zero grade

2

includes 0.8 m of no recovery assumed zero grade

3

includes 3.6 m of no recovery assumed zero grade

Figure 1. Drill hole map of Ayawilca highlighting drill holes released here in RED

Tinka Resources Ltd., Monday, March 6, 2023, Press release picture
Tinka Resources Ltd., Monday, March 6, 2023, Press release picture

Figure 2.

Tinka Resources Ltd., Monday, March 6, 2023, Press release picture
Tinka Resources Ltd., Monday, March 6, 2023, Press release picture

Figure 3. An example of high-grade zinc mineralization in hole A23-212. The interval 205.5 - 208.5 metres has an average grade of 31.3% zinc, 90 g/t silver, and 0.13% lead.

Tinka Resources Ltd., Monday, March 6, 2023, Press release picture
Tinka Resources Ltd., Monday, March 6, 2023, Press release picture


Note on sampling and assaying

Drill holes are diamond HQ size core holes with recoveries generally above 80% and often close to 100%. The drill core is marked up, logged, and photographed on site. The cores are cut in half at the Company's core storage facility, with half-cores stored as a future reference. Half-core was bagged on average over 1 to 2 metre composite intervals and sent to SGS laboratory in Lima for assay in batches. Standards and blanks were inserted by Tinka into each batch prior to departure from the core storage facilities. At the laboratory samples are dried, crushed to 100% passing 2mm, then 500 grams pulverized for multi-element analysis by ICPMS using multi-acid digestion. Samples assaying over 1% zinc, lead, or copper and over 100 g/t silver were re-assayed using precise ore-grade AAS techniques. Samples within massive sulphide zones were also assayed for tin using fusion and AAS finish.

The Qualified Person, Dr. Graham Carman, Tinka's President and CEO, and a Fellow of the Australasian Institute of Mining and Metallurgy, has reviewed and verified the technical contents of this release.

Readers are encouraged to read the NI 43-101 Technical Report entitled "Ayawilca Polymetallic Project, Central Peru, NI 43-101 Technical Report on Updated Preliminary Economic Assessment" available for download on Tinka's website at www.tinkaresources.com. The Technical Report was prepared by Mining Plus Peru S.A.C. ("Mining Plus") as principal consultant, Transmin Metallurgical Consultants ("Transmin"), Envis E.I.R.L ("Envis"), and SLR Consulting (Canada) Ltd ("SLR").

Table 2. Drill hole details for 2022-2023 drill program including drill collar coordinate information

Drill hole

Easting

Northing

Elevation

Azimuth

Dip

Depth

Area

Comment

A22-190

333281

8845755

4167

180

-50

498.95

Central

Results reported

A22-191

333169

8845799

4182

180

-55

478.80

Central

Results reported

A22-192

333345

8845195

4208

232

-74

385.90

South

Results reported

A22-193

332766

8845659

4237

68

-65

365.40

West

Results reported

A22-194

333143

8845231

4226

135

-73

380.20

South

Results reported

A22-195

333149

8845353

4221

148

-65

426.90

South

Results reported

A22-196

333035

8845307

4235

174

-45

382.10

South

Results reported

A22-197

332912

8845693

4220

264

-55

412.60

West

Results reported

A22-198

332900

8845768

4222

265

-53

451.10

West

Results reported

A22-199

333046

8845067

4195

303

-66

344.10

South

Results reported

A22-200

332821

8845889

4246

260

-58

352.00

West

Results reported

A22-201

333342

8845195

4208

310

-73

58.90

South

Results HERE

A22-202

333046

8845066

4197

283

-52

270.15

South

Results reported

A22-203

332839

8845685

4228

264

-60

350.00

West

Results reported

A22-204

333090

8845061

4196

307

-60

334.30

South

Results reported

A22-205

332839

8845685

4227

244

-72

352.70

West

Results reported

A22-206

333044

8845064

4197

270

-58

217.30

South

Results HERE

A22-207

332710

8845883

4252

254

-74

332.00

West

Results reported

A22-208

333044

8845064

4197

270

-70

282.55

South

Results HERE

A22-209

332738

8845927

4251

257

-68

314.15

West

Results reported

A22-210

333047

8845065

4197

297

-48

259.80

South

Results HERE

A22-211

332785

8845707

4236

260

-75

295.00

West

Results pending

A23-212

333047

8845065

4197

228

-79

324.30

South

Results HERE

A23-213

332853

8845650

4225

258

-65

316.00

West

Results pending

A23-214

332710

8845883

4252

255

-67

287.10

West

Results pending

A23-215

333047

8845065

4197

180

-80

295.10

South

Results HERE

A23-216

332710

8845883

4252

220

-73

310.00

West

Results pending

A23-217

332853

8845650

4225

240

-78

300.00

West

Results pending

A23-218

333109

8845020

4190

330

-75

323.70

South

Results pending

A23-219

333219

8845582

4182

180

-85

336.80

Central

Results pending

TOTAL

10037.90

Notes: Datum for coordinates is WGS84 Zone 18S. Azimuth is true azimuth

On behalf of the Board,

"Graham Carman"
Dr. Graham Carman, President & CEO

Further Information:
www.tinkaresources.com

Mariana Bermudez 1.604.685.9316
info@tinkaresources.com

Stay up to date by subscribing for news alerts at Contact Tinka and by following Tinka on Twitter, LinkedIn and Facebook.

About Tinka Resources Limited

Tinka is an exploration and development company with its flagship property being the 100%-owned Ayawilca zinc-silver-tin project in central Peru. The Zinc Zone deposit has an estimated Indicated Mineral Resource of 19.0 Mt @ 7.15% Zn, 16.8 g/t Ag & 0.2% Pb and Inferred Mineral Resource of 47.9 Mt @ 5.4% Zn, 20.0 g/t Ag & 0.4% Pb (dated August 30, 2021). The Ayawilca Tin Zone has an estimated Inferred Mineral Resource of 8.4 Mt grading 1.0% Sn.

Forward Looking Statements: Certain information in this news release contains forward-looking statements and forward-looking information within the meaning of applicable securities laws (collectively "forward-looking statements"). All statements, other than statements of historical fact are forward-looking statements. Forward-looking statements are based on the beliefs and expectations of Tinka as well as assumptions made by and information currently available to Tinka's management. Such statements reflect the current risks, uncertainties and assumptions related to certain factors including, without limitations: timing of planned work programs and results varying from expectations; delay in obtaining results; changes in equity markets; uncertainties relating to the availability and costs of financing needed in the future; equipment failure, unexpected geological conditions; imprecision in resource estimates or metal recoveries; success of future development initiatives; competition and operating performance; environmental and safety risks; the Company's expectations regarding the Ayawilca Project PEA; the political environment in which the Company operates continuing to support the development and operation of mining projects; risks related to negative publicity with respect to the Company or the mining industry in general; the threat associated with outbreaks of viruses and infectious diseases, including the novel COVID-19 virus; delays in obtaining or failure to obtain necessary permits and approvals from local authorities; community agreements and relations; and, other development and operating risks. Should any one or more of these risks or uncertainties materialize, or should any underlying assumptions prove incorrect, actual results may vary materially from those described herein. Although Tinka believes that assumptions inherent in the forward-looking statements are reasonable, forward-looking statements are not guarantees of future performance and accordingly undue reliance should not be put on such statements due to the inherent uncertainty therein. Except as may be required by applicable securities laws, Tinka disclaims any intent or obligation to update any forward-looking statement.

Neither the 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 news release

SOURCE: Tinka Resources Ltd.



View source version on accesswire.com:
https://www.accesswire.com/742021/Tinka-Drills-145-Metres-at-109-Zinc-Including-29-Metres-at-20-Zinc-at-Ayawilca