Electric currents in the Earth may be responsible for the formation of gold nuggets, new research suggests. As detailed in a new study published in the journal Nature Geoscience, the theory could ...

AMHERST, Mass. - For centuries, scientists have wondered why gold is found in two forms - as a solid in deposits close to the Earth's crust, and in solution, often far removed from gold-ore deposits.

The study focuses on how gold formed and moved within the Sawayaerdun gold deposit in northwest China, a large orogenic system shaped by long periods of burial, deformation and heating. Before any ...