Southern Arizona has numerous sites known for their pyroxene minerals, from Twin Buttes south of Tucson, to Ajo, to the Chiricahua, Santa Rita and Patagonia mountain ranges.

It has a course-grained texture and contains the minerals pyroxene and olivine, Sotheby’s says. It also has a glassy surface, likely due to the high heat that burned it when it fell through Earth’s ...

A rare Martian meteorite, NWA 16254, is providing scientists with a groundbreaking look into Mars’ volcanic past. This discovery has revealed complex volcanic processes and new clues about the ...

It has a course-grained texture and contains the minerals pyroxene and olivine, Sotheby’s says. It also has a glassy surface, ...

A rare Martian meteorite has revealed complex volcanic processes and mantle heterogeneity on Mars, offering new clues to the planet’s magmatic evolution and thermal history. In a groundbreaking ...

These methods revealed decoupled geochemical behaviors in pyroxene cores and rims—a phenomenon critical for reconstructing magma chamber dynamics.

Both meteorites from the study, which Rider-Stokes analyzed with several instruments including an electron microscope, contain olivine and pyroxene, two iron-poor minerals confirmed by MESSENGER to be ...

Sotheby's is putting some rare items up for auction, including what it calls the largest piece of Mars ever found on Earth. The natural history-themed sale on Wednesday features a 54-pound hunk ...

A Martian meteorite said to be the largest piece of Mars on Earth, estimated at $2 - 4 million, is displayed at Sotheby's, in New York.