Story perspectives

Perseverance Spots Chromium-Bearing Corundum in Three Martian Rocks

8/13/2026

Summary

Story summary

U.S. scientists using NASA's Perseverance rover identified chromium-bearing corundum in three Martian rocks in 2025.
The rocks Hampden River, Coffee Cove and Smiths Harbour examined in 2025 showed luminescence peaks at 692.7 nm and 694.1 nm that match chromium-substituted corundum in terrestrial rubies.
Researchers suggest the Jezero impact and possible hydrothermal fluids created the high-temperature, aluminum-rich conditions and cite a Mars sample-return mission as needed to confirm the origin.

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Story summary

U.S. scientists using NASA's Perseverance rover identified chromium-bearing corundum in three Martian rocks in 2025.
The rocks Hampden River, Coffee Cove and Smiths Harbour examined in 2025 showed luminescence peaks at 692.7 nm and 694.1 nm that match chromium-substituted corundum in terrestrial rubies.
Researchers suggest the Jezero impact and possible hydrothermal fluids created the high-temperature, aluminum-rich conditions and cite a Mars sample-return mission as needed to confirm the origin.