Explosive volcanism on Mars has deposited rare minerals in the crater

The mysterious discovery of a concentrated chunk of rare mineral quartz in the Gale Crater region of Mars by the Curiosity rover in 2016 has finally been explained by researchers.

A team of planetary scientists from Rice University, NASA’s Johnson Space Center and the California Institute of Technology (CalTech) believe the concentrated chunk of tridymite was spewed into Gale Crater by a volcano while it was still filled with water as long as 1 billion years ago.

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