In a remarkable discovery, scientists have identified tiny ruby-like crystals embedded within rocks on Mars, marking the first time such mineral formations have been found on the Red Planet. The finding was made by Perseverance rover, which continues to explore Mars in search of clues about its geological history and potential for past life.
The crystals, discovered inside Martian pebbles, are composed of corundum a mineral that forms rubies or sapphires depending on the trace elements present. On Earth, corundum is known for its hardness and brilliance, commonly used in gemstones and industrial applications.
The discovery was led by Ann Ollila and her team at Los Alamos National Laboratory. Researchers first detected signs of corundum while analyzing a rock named “Hampden River” using the rover’s advanced SuperCam instrument.
SuperCam uses multiple techniques to study the composition of rocks. It fires lasers to either vaporize tiny portions of the surface or stimulate luminescence, allowing onboard cameras to analyze the emitted light. In this case, both testing methods produced signals nearly identical to those observed from rubies in laboratory conditions on Earth, strongly indicating the presence of corundum grains.
Scientists say this discovery is significant because corundum typically forms under specific geological conditions, often involving high temperatures and pressure. Its presence on Mars could provide new insights into the planet’s past environment, including the processes that shaped its crust.
The finding also raises intriguing questions about Mars’s mineral diversity and geological complexity. While previous missions have identified a range of minerals, the detection of gem-like materials such as corundum adds a new dimension to understanding the planet’s formation history.
Researchers believe that further analysis of these crystals could help determine whether Mars once had conditions suitable for more complex geological or even chemical processes. It may also offer clues about the availability of water and heat in the planet’s past key factors in assessing its habitability.
As the Perseverance rover continues its mission, scientists are hopeful that more such discoveries will emerge, deepening our understanding of Mars and its potential to reveal secrets about the early solar system.