Garnet-Bearing Martian Meteorite Unveils a New Rock Type

Scientists report a garnet-rich rock fragment inside Martian meteorite NWA 8171, providing the first evidence garnet may have formed in Mars’ crust and hinting at a new rock type or metamorphic process on the Red Planet; while Martian origin is supported by pyroxene chemistry and oxygen isotope signatures, confirming it will require direct isotope analysis of the garnet-bearing piece.