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Mariana Minerals: Series B | RoundOS

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Funding/Rounds/Mariana Minerals · Series B

Series B · Industrial tech

Mariana Minerals: Series B

Builds and operates AI-driven mines and refineries for critical minerals

Published Oct 4, 2026By RoundOS Funding desk

Announced Aug 3, 2026

$310MSeries B

Reported in USD

Financing: equity
Stage group: Series B
Country: United States
Sectors: Industrial tech · AI

Investors

Andreessen Horowitz (a16z)Role not disclosed

BHP VenturesRole not disclosed

Breakthrough Energy VenturesRole not disclosed

Earthshot VenturesRole not disclosed

General Innovation Capital PartnersRole not disclosed

GreenoaksRole not disclosed

GreycroftRole not disclosed

Halo FundRole not disclosed

In-Q-TelRole not disclosed

Khosla VenturesRole not disclosed

Mitsubishi CorporationRole not disclosed

Pax VenturesRole not disclosed

StepStone GroupRole not disclosed

Washington Harbour PartnersRole not disclosed

MMMariana MineralsCompany profile · 1 round→

Funding history

Aug 3, 2026Series B · This round$310M

Sources

prnewswire.com

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