Vancouver, British Columbia--(Newsfile Corp. - October 30, 2023) - Atacama Copper Corporation (TSXV: ACOP) ("Atacama" or the "Company") and TCP1 Corporation ("TCP1") are pleased to report the results of a maiden mineral resource estimate ("MRE") at TCP1's wholly-owned Yecora copper project in southwestern Sonora State, Mexico. The Yecora project is located in the Laramide copper belt that extends from Arizona into northwestern Mexico and consists of multiple tourmaline breccia bodies carrying copper-silver-molybdenum mineralization, and high-grade copper-silver veins (Figure 1). Atacama and TCP1 recently announced a proposed business combination whereby the Company will acquire, directly or indirectly, all the issued and outstanding shares of TCP1 in exchange for common shares of the Company.

Highlights:

Indicated resources of 25.3 Mt at 0.30% copper, 28.5 g/t silver, and 749 ppm molybdenum (0.79% CuEq grade), for a contained 444 Mlb of Cu-equivalent.
Inferred resources of 11.2 Mt at 0.30% copper, 24.2 g/t silver, and 831 ppm molybdenum (0.78% CuEq grade), for a contained 193 Mlb of Cu-equivalent.
The resource estimate is based on 34 diamond drill holes and 8 reverse circulation drill holes completed between 2014 and 2022 for 14,006 m of drilling in total.
Preliminary metallurgical test work projected a copper concentrate grade of 20-25% with a recovery of approximately 90% and containing 75 to 85% of the silver. The molybdenum concentrate grade was projected to be 50-55% with a recovery of 80 to 90%. Future testing will determine the feasibility of recovering lead and zinc to a separate concentrate, and thus zinc and lead were not included in the current resource estimate.
The Yecora deposit is immediately adjacent to the active Minera Alamos Santana gold mine, and several other copper and gold deposits occur in the area.

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https://www.newsfilecorp.com/release/185627/Atacama-Copper-and-TCP1-Announce-a-Maiden-Resource-Estimate-for-the-Yecora-Copper-Project-Sonora-Mexico