Yooperlites are a variety of sodalite-rich syenite found in the Upper Peninsula of Michigan.

Dinosaur National Monument photo You might want to wash your hands the next time you check out an unusually shiny rock. Turns out fossilized poop — called coprolites — isn’t the only ...

Dear Sundog: I’ve been obsessed with rocks since I was a kid ... Western/capitalistic acquisitiveness—an impulse to hoard shiny things? Maybe it’s both. And lately, every time I pick ...

The rover, which has been rolling around Mars since 2012, previously detected four interesting rocks, including one that is atypically smooth and shiny. The rock has been named Little Colonsay and ...

Here’s how it works. We're all distracted by shiny things sometimes, and NASA's Curiosity rover on Mars is no different. At the end of November, the rover spotted a rock that has since been ...