Such alteration is easily visualized, often showing a light pink color on a rock surface. It can be used as an indicator of ...

Gold nuggets have long fascinated treasure hunters and geologists alike, often found gleaming within quartz veins deep underground. Yet the exact process behind the formation of these ...

We can't usually feel them, but dozens of earthquakes occur every day—and some of them are using mundane minerals to make glittering gold. Researchers have found that tectonic shifts put just the ...