million tonnes of oxide equivalent — the third-largest reserve base in
the world, behind only China and Australia. That number has been
relatively stable, but the story of how it will be converted into supply
is only beginning to be written.¹
in rare-earth reserves at 21 million tonnes REO. China leads at 44
million tonnes, Australia sits second at 36.3 million tonnes (or 3.3
million tonnes on a JORC-equivalent basis, which uses a stricter
classification standard).¹ The 21-million-tonne figure for Brazil has
been stable across recent USGS editions, reflecting the conservatism of
formal reserve reporting: further delineation work at operating and
advanced-stage projects is steadily confirming the base but not yet
adding to it at headline scale.
over 85 million tonnes.¹ Brazil alone holds roughly 25 percent of that.
the world for decades.
analysis. China's 44 million tonnes is concentrated in a few provinces,
with Inner Mongolia's Bayan Obo deposit as the iconic giant. Australia's
reserves are distributed across several carbonatite-hosted projects,
with Lynas's Mt Weld as the producing anchor. Brazil's reserves are
spread across multiple deposit types and multiple states — a geographic
and geological diversity that is both a strength and a challenge.
holds 3.5 million tonnes; Russia 3.8 million; India an unspecified but
smaller base. These countries matter strategically but cannot match
reserve base — a duopoly that will shape critical-minerals partnerships
for the coming decade.
carbonatite-hosted — alkaline-carbonatite complexes concentrated in the
rare earths alongside niobium, phosphate and other commodities, and they
have been mined industrially (primarily for niobium by CBMM at Araxá)
for decades. The rare-earth by-product potential from these operations
has been studied extensively but not yet monetised at scale.
targeting 2028 production) and Caldeira (Meteoric Resources, at
pre-feasibility stage). Ionic-clay reserves are smaller per deposit than
carbonatite reserves but have the processing economics that support
commercial extraction at a scale competitive with Chinese operations.
headline reserve number, but the operational reality does. Brazil's
near-term production growth will come almost entirely from ionic-clay
projects; the carbonatite reserves represent a longer-term option that
could be unlocked by new processing technology or by integration with
existing niobium and phosphate operations.
production. Converting reserves into ounces requires permits, processing
capacity, offtake agreements, and downstream refining — and Brazil has
been slower than its reserves would suggest in building out that full
value chain.
federal and state levels requires sequential approvals that can extend
project timelines by several years. The 2025 pace of DFC engagement and
international investment may be speeding up federal coordination, but
the underlying legal structure still imposes a specific rhythm on
project development.
rare-earth separation capacity today, which means that Serra Verde's
production is exported as mixed concentrate for separation elsewhere.
establish domestic separation capability, but that project is still in
development.⁴
refining require a specialised skill base that Brazil is only beginning
to accumulate. Building that workforce — through partnerships with
international operators, dedicated academic programs at universities
like UFMG and UFOP, and on-the-job training at projects like Serra Verde
handful of operations.
country has enough reserves — it clearly does — but how much of that
reserve base will be converted into production within the current
critical-minerals cycle. A realistic scenario has Brazilian output
climbing from the 2,000 tonnes produced in 2025 to something in the
range of 8,000-15,000 tonnes per year by 2030, if Serra Verde, Aclara
and Meteoric all execute their respective plans and if the Poços de
Caldas separation hub comes online.
fraction of its reserve base. The runway is extraordinarily long. The
question is whether the country can build the midstream and downstream
infrastructure to monetise that reserve base at higher value per tonne,
rather than simply exporting concentrate.
resources in the global critical-minerals picture. The 2025 inflection
at Serra Verde, the advancing Aclara and Meteoric projects, the Poços de
together suggest that conversion of reserves into production is
genuinely beginning. The country will not displace China or Australia in
the near term, but it is positioning itself for a meaningful and growing
share of the 2030 supply landscape. Investors looking at the rare-earth
thesis should watch the reserve-to-production conversion rate — it is
the single most important variable for determining how quickly Brazil's
long-term geological optionality will translate into a short-term
commercial reality for global buyers in the United States, Europe,