Geology

Geology

The science that comprises the study of the solid Earth and the processes by which it is shaped and changed.

Industry: Earth science

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Geology

lead

Earth science; Geology

A soft, malleable,ductile,dense metallic element.

Magnetite

Earth science; Geology

Iron oxide mineral (Fe3O4). Usually tiny black, metallic crystals. Magnetite will attract a magnet and sometimes, in a rock, a hiker's compass needle.

Grain size

Earth science; Geology

Refers to the size of individual mineral crystals or particles within a rock or sediment deposit.

Biotite

Earth science; Geology

A common rock-forming mineral of the mica family. Biotite is a black or dark brown silicate rich in iron, magnesium, potassium, aluminum, and, of course, silica. Like other micas, it forms flat ...