Greenland has granted a 30-year mining license to a Danish-French consortium for anorthosite extraction, a key mineral in ...

In a recent study, geologists say Michigan is home to the oldest known rock in the nation. Watersmeet gneiss is found in Michigan's Upper Peninsula. Minnesota's Morton gneiss previously held the ...

Creating demand for minerals “is best done by ensuring clean-tech manufacturing markets are here,” says Milo McBride, a ...

A weathered sign in the Minnesota River Valley proudly proclaims: “World’s Oldest Rock.” Erected in 1975, it marks a 3.8-billion-year-old gneiss — or so scientists thought.

NASA’s Perseverance rover has reached a scientifically thrilling region on Mars called Krokodillen, where some of the planet’s oldest rocks may hold vital clues about early Martian environments — ...

Geologists recently dated the age of Watersmeet gneiss, a type of rock in the Upper Peninsula, as the oldest in the U.S. Here ...