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Teghaza 001 Martian meteorite analysis

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2026-11-08 21:16 UTC → 2026-11-09 18:28 UTC · added ~~removed~~

Scientists have identified a rose-colored meteorite found in the Sahara Desert of Mali as an ancient piece of the Martian crust. The specimen, named Teghaza 001 after the salt plain where it was discovered in 2022, consists of ~~eight~~ fragments weighing approximately 798.5 to 800 grams. Research published in the journal Science, led by Yang Liu of NASA’s Jet Propulsion Laboratory, indicates the meteorite is at least 4.1 billion years old. Analysis of zircon crystals using uranium-lead dating, supplemented by rubidium-strontium dating, confirms its age, making it one of the three oldest Martian samples recovered on Earth. The meteorite is a coarse-grained, plagioclase-rich gabbro that likely formed from cooling magma originating deep within the Martian mantle. It is believed to have been ejected from Mars by an asteroid or comet impact before being captured by Earth’s gravity. The study suggests that early Mars was a warmer and wetter environment than its current arid state. Chemical signatures, specifically oxygen and hydrogen isotopes, indicate that liquid water interacted with the rock as it cooled underground. Mineral evidence, including high levels of manganese oxide, further suggests that water-bearing fluids altered some of the minerals while the rock was still on Mars. Recent findings highlight that the meteorite contains tiny apatite crystals that preserve hydrogen from two distinct sources: the interior of Mars and its ancient water systems. This provides a unique geological record of interactions between the Martian crust and its ancient hydrosphere. Researchers noted the sample may have originated from a previously unsampled region of the Martian crust. Lead researcher Yang Liu has described the discovery as a “Rosetta Stone for Mars,” noting its ability to offer insights into the planet’s early atmospheric and geological history and how water and rock interacted before crust, likely the ~~planet lost much of its water to space.~~ cratered southern highlands.

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