Australian Iron Ore Deposits May Hold Vast Hydrogen Energy Source

Researchers at Edith Cowan University (ECU) have identified that iron-rich rocks in Western Australia can naturally produce hydrogen. This process could be enhanced to generate significantly larger quantities. If scaled, these vast formations in the Pilbara region could become a major source of low-emission energy for Australia and potentially the world.

The research indicates that magnetite, a mineral abundant in Western Australia's iron ore deposits, releases hydrogen gas when reacting with hot water. These conditions mimic those found deep beneath the Earth's surface. Scientists from ECU's School of Engineering also found that injecting a solution into banded iron formations increased hydrogen generation. This suggests that naturally produced hydrogen could be deliberately boosted underground.

To study this, researchers placed magnetite samples in water at 200 degrees Celsius under high pressure for 60 days. This recreated the hot, pressurized environment found deep underground. The experiments provided insights into how natural hydrogen forms within rock and the conditions necessary for sustained production. This finding is particularly important for Western Australia, which contains some of the largest banded iron formations globally.

The study, published in the *International Journal of Hydrogen Energy*, also revealed that the amount of hydrogen produced depends on more than just the quantity of magnetite. The rock's structure, specifically its permeability to water, is also crucial. Water must be able to access fresh mineral surfaces through fractures, pores, and other pathways. These geological features could determine the efficiency of natural hydrogen generation as a practical energy resource.