Dolomite (noun)

1. A mineral composed of calcium magnesium carbonate, often used as a source of magnesium and as a construction material.
2. A type of rock that is composed primarily of the mineral dolomite.

Origin:

Named after french geologist déodat gratet de dolomieu who first described the mineral in 1791.

Examples:

1. Dolomite is a common mineral found in many parts of the world.
2. Dolomite is used in the production of glass and ceramics.
3. Dolomite is used as a source of magnesium for agricultural and industrial purposes.
4. The dolomite rock found in the area was used to construct the nearby buildings.
5. The dolomite mines were an important source of income for the local community.