No Comments

Germanium

A grayish-white metallic element used in semiconductors and alloys

No Comments

Gage, gauge

The measurement of space between a sieve through which the majority of aggregate will pass

No Comments

Geophysical survey

A physical evaluation of rocks by the measurement including magnetism, conductivity, specific gravity and radioactivity

No Comments

Gadolinite

A weakly radioactive monoclinic mineral which occurs in granites and granite pegmatites

No Comments

Geophysics

The measurement of physical properties in rocks and minerals

No Comments

Gabbro

A group of dark intrusive igneous rocks composed of plagioclase and clinopyroxene

No Comments

Geological survey

The systematic mapping of an area to record the characteristics of its underlying geology