22/06/2026 04:57 - Tecnologia
Fragmento de meteorito marciano con cristales de granate incrustados brillando bajo luz de laboratorio, fondo oscuro espacial con planeta Marte rojo visible en segundo plano, estilo científico cinematográfico
The breakthrough began when researcher Tanya Kizovski, Assistant Professor of Earth Sciences at Brock University in Canada, analyzed a tiny fragment of the Martian meteorite NWA 8171, housed in the collections of the Royal Ontario Museum in Toronto. What initially appeared to be pyroxene—a common mineral throughout the solar system—turned out to be something far more significant: garnet, a mineral never before identified in samples from Mars.
The international team included specialists from Canada, the United Kingdom, and Italy, among them James Darling, Professor of Earth and Planetary Sciences at the University of Portsmouth. They employed advanced electron microscopy techniques and specialized laser technology to confirm the finding.
Garnet is a mineral widely recognized on Earth, commonly used in jewelry for its characteristic dark red color. However, its scientific importance extends far beyond ornamental value.
In geology, this compound allows scientists to study processes involving high temperatures and extreme pressures, making it a key indicator for reconstructing the history of rocks. Scientists consider it a true "time capsule" because it preserves signals of the conditions under which it formed.
In the analyzed meteorite, the detected grains do not correspond to the typical red variety, but rather an iron-rich form with greenish or yellowish hues, which complicated initial identification.
Martian meteorites are rocks ejected from Mars' surface by asteroid or comet impacts. After traveling through space, some eventually penetrate Earth's atmosphere and fall to our planet.
These rocks represent one of the few ways to access direct material from the Red Planet without complex space missions. Each new analysis provides fundamental pieces for understanding Mars' geological history.
The analyzed fragment, smaller than a seed, contains potentially valuable information about geological processes that could date back billions of years.
After confirming the discovery, researchers proposed two possible scenarios to explain the presence of this mineral:
The mineral could have originated directly in the Martian interior, associated with volcanic activity or magma ascent from deep planetary layers.
Its formation could be linked to high-energy impacts, such as meteorite collisions capable of modifying rock structures and generating the necessary pressure and temperature conditions.
Both hypotheses are relevant because they imply large-scale internal or external dynamics, helping reconstruct an early stage of Martian history when the planet would have been more geologically active than today.
Determining the precise origin of the mineral requires additional analyses that could involve partial destruction of the sample. Because this material is extremely rare, researchers work with extreme caution to avoid losing valuable information.
"We don't want to take unnecessary risks because this could be the only Martian rock with garnet available for study," Kizovski stated.
Meanwhile, the team continues investigating the fragment and comparing results with data obtained by orbiting probes and rover vehicles operating on Mars.
The finding, published on June 16, 2026 in the scientific journal Geochemical Perspectives Letters, represents a significant advance in studying Mars' evolution and suggests the Red Planet still holds secrets capable of redefining what we know about its geological past.
Study Reference: Kizovski T.V., et.al. (2026). "Expanding Mars' lithologic diversity: discovery of a garnet-bearing clast in NWA 8171".
Alfredo S. Quiroga
