Atlas’ Malacacheta graphite project: scale, grade and PEA signals for mine planners
Reviewed by Joe Ashwell

First reported on MINING.com
30 Second Briefing
Atlas Critical Minerals’ Malacacheta project in Minas Gerais, Brazil, has debuted with an initial resource of 17.2 million indicated tonnes at 5.73% Cg (about 986,000 tonnes contained graphite) plus 7 million inferred tonnes at 5.4% Cg (around 378,000 tonnes), making it South America’s largest compliant, publicly reported graphite resource. The grade is roughly 25% higher than Graphite One’s Graphite Creek in Alaska and exceeds South Star Battery Metals’ Santa Cruz mine, which has 14.9 million measured and indicated tonnes at 2.29% Cg. The estimate, based on 2,394 metres of drilling in 21 holes over just 2.5 km of an 11-km corridor, underpins a planned preliminary economic assessment.
Technical Brief
- Resource estimate is constrained to drilling over only 2.5 km of an 11-km mineralised corridor.
- Atlas controls three contiguous tenements at Malacacheta, with current drilling confined to just one licence.
- The maiden resource is based on 2,394 m of diamond drilling from 21 holes completed in 2026.
- Malacacheta lies in Minas Gerais, approximately 580 km north-east of Rio de Janeiro, easing export logistics.
- Brazil produced 65,000 tonnes of graphite in the previous year, ranking fourth globally by output.
- Peer comparison: South Star’s Santa Cruz mine in Bahia hosts 14.9 Mt M&I and 7.9 Mt inferred resources.
- Atlas Critical Minerals is listed on Nasdaq (ATCX), with a current market capitalisation of about US$15.1 million.
- Share price has traded between US$2.57 and US$14.01 over 12 months, indicating high valuation volatility.
Our Take
Graphite One’s Graphite Creek project in Alaska, which is advancing under the FAST‑41 permitting framework and has up to about $2.1 billion in indicative EXIM support in our coverage, sets a high bar for integrated mine‑to‑anode graphite supply chains that Atlas Critical Minerals’ Malacacheta in Brazil will inevitably be benchmarked against by OEMs and financiers.
With Malacacheta’s indicated grade materially higher than Graphite Creek’s and Santa Cruz’s in Brazil, Atlas Critical Minerals is positioning into the ‘high‑grade natural graphite’ niche that, in our database, tends to support lower operating costs and gives projects more resilience at the current subdued graphite price levels.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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