How to identify rocks with your phone A pair of running shoes, the Garmin Forerunner 956, Shokz OpenRun Pros, Garmin HRM-Fit, a phone, and PowerDot laid out in a grid with blurred runners behind them.

Rocks older than 4.03 billion years could shed light on Earth's earliest geological history, but they're incredibly rare.

Rock hunters can identify Yooperlites by their appearance, unique properties (like fluorescence), and other characteristics. Most people do their rock hunting during the day, but you can't find " ...

The National Park Service is seeking the public's help in identifying the two men, caught on video pushing rocks off a cliff near the Redstone Dunes Trail earlier this month.