Significant New Discovery at Ternera East

Tesoro Gold Limited (Tesoro or the Company) (ASX:TSO, OTCQB:TSORF) is pleased to report significant assay results from first-pass drilling of the Ternera East target, which has intercepted a newly identified, thick (+200m), well-mineralised El Zorro Tonalite (EZT) intrusive.

This new discovery (refer Figure 1) is located approximately 300m east of the 1.3Moz Ternera Gold Deposit (Ternera) within Tesoro’s broader El Zorro Gold Project (El Zorro) in Chile.

HIGHLIGHTS

• Hole ZDDH0341 intercepted a newly identified, +200m thick intrusive of EZT, the primary gold host at Ternera.
• The new intrusive body is a potential major fault offset or Ternera ‘repeat’ (Ternera East).
• Two substantial, well-mineralised zones were intercepted in ZDDH0341 including;
  • 49.50m @ 0.55g/t Au from 179.00 m, including;
    • 15.40m @ 1.21g/t Au from 182.00m; and
    • 5.40m @ 2.21g/t Au from 182.0m and;
  • 36.00m @ 1.00g/t Au from 281.50m including;
    • 17.50m @ 1.91g/t Au from 282.00m
    • 7.70m @ 3.64g/t Au from 283.30m
    • 2.30m @ 9.50g/t Au from 288.30m
• Accelerated drilling program in progress to rapidly define the Ternera East target.

Tesoro Managing Director, Zeff Reeves, commented:

“This discovery at Ternera East is one of the most significant results from El Zorro and has the potential to materially change its scale. The identification of this well-mineralised EZT represents a potential uplifted extension or offset of the main Ternera Deposit, which could rapidly add substantial ounces to our existing 1.3Moz Mineral Resource.

“It is an exciting outcome that further validates the targeting model being employed by the Tesoro team at El Zorro. We are now focused on completing additional drilling of the area as quickly as possible to better understand what we have identified at Ternera East.”

Figure 1: El Zorro Gold Project – Ternera area drill locations in current program, location of hole ZDDH0341 within the Ternera East target, and significant results showing areas of open gold mineralisation close to Ternera (refer ASX Announcements 23 March 2021, 25 June 2021, 3 November 2021, 8 November 2022, 18 September 2023, and 13 June 2024). Section location for Figure 2 shown at A-A’ - Datum PSAD56 19S

El Zorro Diamond Drilling Program Delivers Significant New Discovery at Ternera East

An initial diamond drilling program at key target areas within a 1.5 km radius of the existing 1.3 Moz Ternera Deposit is ongoing (refer Figure 1). The program is designed as a first-pass drill assessment of high-priority targets proximate to Ternera, providing the potential for future rapid and shallow additions to the existing Mineral Resource at El Zorro.

These areas include Drone Hill, Buzzard, Ternera East and a direct extension to Ternera. To date, ten holes have been completed in the current program for 2,305m. Hole details are presented in Appendix 1.

At Ternera East, assay results have been returned for hole ZDDH0341(refer Figure 2), which was fast-tracked through the laboratory due to the wide zone of prospective EZT observed in drill core. Significant intercepts for hole ZDDH0341 are presented in Table 1, with full drill hole details in Appendix 1.

Figure 2: El Zorro Gold Project – Ternera East drilling, ZDDH0341 showing significant mineralised zones and location relative to the Ternea Gold Deposit MRE Block Model and USD1800 optimised Pit Shell., looking north. Hole ZDDH0341 was drilled toward 000 and is projected onto section. Previous drilling shown as pale grey drill traces. Refer ASX announcement 6 December 2021 for hole ZDDH0223 results.

ZDDH0341 was drilled to a final downhole depth of 400.15m and intercepted several small EZT dykes from near surface to 178.70m downhole. These dykes returned zones of sporadic gold mineralisation. Between 178.70m to 390.85m downhole, a thick body of EZT was intercepted containing two main zones of gold mineralisation.

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