Their similar charge and atomic structure mean that rare earth elements can often be used interchangeably within a crystal ...

Feldspar sands can be found in sedimentary rocks including sandstones and shales as well as in soils derived from igneous and metamorphic rocks ... the production cycle is automated and depends on ...

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

The scientists dated the rocks using zircon, a mineral in gneiss, the GSA said. "Dating zircon grains using ... techniques is now celebrated as the optimal method for determining when igneous ...

The scientists dated the rocks using zircon, a mineral in gneiss, the GSA said. "Dating zircon grains using ... techniques is now celebrated as the optimal method for determining when igneous ...

As detailed in a study published April 10 in the journal Geology, the researchers claim to be the first to fully document and date a complete “rapid anthropoclastic rock cycle” on land ...

The researchers have documented for the first time a new "rapid anthropoclastic rock cycle," which mimics natural rock cycles but involves human material over accelerated timescales. They believe ...