Mineral mining

Mineral mining

The extraction of valuable minerals or other geological materials from the earth for economic interests.

Industry: Mining

Contributors in Mineral mining

Mineral mining

A term used in the freezing method of shaft sinking. The surface around the shaft tends to heave owing to the formation of ice and the variation of temperatures. This uplift is sufficient to throw ...

sheet ground

Mining; General mining

A term used in the Joplin district, Missouri, and applied to horizontal, low-grade, disseminated zinc-lead deposits, covering an extensive area.

soft ore

Mining; General mining

A term used in the Lake Superior region for an earthy, incoherent iron ore mainly composed of hematite or limonite (goethite) and containing 45% to 60% iron.

stampwork

Mining; General mining

A term used in the Lake Superior region for rock containing disseminated native copper.

zebra dolomite

Mining; General mining

A term used in the Leadville district of Colorado for an altered dolomite rock that shows conspicuous banding (generally parallel to bedding) consisting of light-gray coarsely textured layers ...