Critical Minerals & Mining Tech

Government and strategic capital now anchor critical minerals cap tables

Hertha Metals' coal-free steel Series A of about $134M pairs Khosla Ventures and Doerr Capital with a $65M U.S. government check, and Siemens appears as a strategic investor on a parallel $133.65M round. Axios and Parsers VC both flag government and corporate capital as a standard part of hardware cap tables, serving as a signal and a distribution channel. Outliers like Hertha and Volantis made up $222M, about 39% of one week's Series A total. The week of Sept 28 and the week of Oct 5 each logged about $268M across 2 deals, after a near-zero stretch in late August and early September. Late-stage dollars are concentrated in a few state-backed, strategically endorsed bets.

Maglut Heavy Industries is building U.S.-based rare earth separation and refining using chromatography, and Parsers VC calls its raise a rarely seen national-security chokepoint bet. Cyclic Materials, which recovers rare earth magnets from scrap, closed a $75M growth round with T. Rowe Price, Microsoft, Amazon and BMW i Ventures. Lynas Rare Earths' $968M acquisition of Meteoric Resources shows incumbents consolidating supply. Critical Materials Group's seed/Series rounds point to the same comfort with defense-adjacent industrial deals.

Why it matters · Midstream processing and recycling, not mining, is where blue-chip and defense-linked capital is concentrating to reduce reliance on Chinese supply.

Mariana Minerals, backed with $120M from a16z, Breakthrough Energy Ventures and Khosla, runs a copper mine and a lithium facility under its MarianaOS platform. a16z is the top investor by deal count in the theme, with 7 deals under 'andreessen horowitz' and 4 under 'a16z'. Kalanick's Atoms thesis frames land and minerals as the base layer under compute, with Atoms acquiring multiple early-stage companies.

Why it matters · The a16z and Khosla playbook of owning operations end-to-end with software may compress timelines for permitting and refining, pressuring traditional mining majors on speed.

A $40M Series A with Breakthrough Energy Ventures, SOSV and Fortescue backs pilot electrochemical copper reactors and a 42,000-sq-ft copper processing facility. Separately, an $11M HAX-led Series A funds lithium extraction from brine, and BHP Ventures joined a $6.4M seed round. Mining corporates are using venture arms to buy options on new extraction and processing technology.

Why it matters · Process innovation that unlocks lower-grade or domestic sources is drawing strategic mining capital early, setting up partnerships and acquisitions.

Weekly funding went from $3.45B in the week of July 20 and $705M in the week of Aug 3 to $0 in several late-August and September weeks. Late September and October brought $268M weeks, then a $17M week with small rounds of $6.4M to $25M. Trinity Metals' New York IPO exploration and a $50B-valuation IPO signal suggest public-market exits may reopen.

Why it matters · Deal flow depends on a few outsized rounds, so investors should read velocity alongside round concentration instead of treating the rebound as broad-based.