Science

Scientists Find Australia's Iron-Rich Rocks May Be a Natural Hydrogen Source

2 min read · 2026-08-30

What if the rust-colored rocks under the Australian outback were quietly brewing fuel? Researchers studying Western Australia's iron-rich rock formations found they naturally generate hydrogen gas, and the reaction might be sped up to make far more.

5.6 trillion tonnesEstimated hydrogen locked in Earth's crust, per U.S. Geological Survey research

The facts

  • 1Researchers studying Western Australia's ancient iron-rich rock formations found these rocks naturally generate hydrogen gas underground.
  • 2The hydrogen forms when iron minerals in the rock react chemically with water, a process geologists call natural or geologic hydrogen.
  • 3The research team says the natural reaction could potentially be boosted or accelerated to produce far larger volumes of hydrogen than occur on their own over geologic time.
  • 4Hydrogen made this way could skip the heavy electricity use of conventional green hydrogen, which is produced by splitting water through electrolysis.
  • 5Natural hydrogen deposits depend on specific rock chemistry and geology, so the approach won't work everywhere, and safely scaling the reaction outside controlled tests remains unproven.

Why it matters

A low-carbon fuel that forms underground without constant electricity input could ease pressure on power grids used for clean hydrogen production, if the reaction can be scaled safely and affordably.

Sources

  • ScienceDaily
  • Geological Survey of Western Australia
  • U.S. Geological Survey

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