Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina

The most recent news (March 2, 2026) announces a significant update to the Mineral Resource Estimate (MRE) for the Rio Grande gold-copper project in Salta, Argentina. This project is being spun out into a new entity, Centauri Minerals Inc. The updated estimate reports Indicated Resources of 1.45M oz gold and 384kt copper, plus Inferred Resources of 1.55M oz gold and 420kt copper. This follows a series of major corporate developments in February 2026, including the closing of a C$40.25M bought deal and a concurrent C$5M private placement, both at C$3.25 per share.

The news is Routine - Positive. While the resource increase at Rio Grande is substantial, it is "routine" in the context of the already announced spin-out strategy. - Strategic Value: The expansion of Rio Grande increases the "sum-of-the-parts" valuation for Aldebaran shareholders, who are slated to receive shares in Centauri Minerals in 2026. - Flagship Focus: The primary value driver remains the Altar project. The recent C$45M+ capital injection is more material to the company's survival and advancement than the secondary project's resource update. - Validation: The involvement of Dr. Kevin Heather (CGO) and the interest from strategic investors like Altius Minerals in the Centauri seed round validate the quality of the exploration team and the assets being spun out.

Aldebaran is a Canadian exploration company focused on large-scale copper-gold porphyry deposits in Argentina. - Flagship Project: Altar (San Juan, Argentina). Aldebaran holds an 80% interest (Sibanye-Stillwater 20%). - Altar Economics: 2025 PEA outlined a 48-year mine life, US$2.0B NPV (8%), and 20.5% IRR. - Secondary Assets: Rio Grande, Aguas Calientes, and others (currently being spun out into Centauri Minerals).