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The Collaborative International Dictionary

dolomite \dol"o*mite\ (d[o^]l"[-o]*m[imac]t), n. [After the French geologist Dolomieu.] (Geol. & Min.) A mineral consisting of the carbonate of lime and magnesia in varying proportions. It occurs in distinct crystals, and in extensive beds as a compact limestone, often crystalline granular, either white or clouded. It includes much of the common white marble. Also called bitter spar.

Douglas Harper's Etymology Dictionary

1794, named for French geologist Déodat De Gratet De Dolomieu (1750-1801) who described the rock in his study of the Alps (1791).


n. (context mineral English) A saline evaporite consisting of a mixed calcium and magnesium carbonate, with the chemical formula calciummagnesium(carbonoxygen3)2; it also exists as the rock dolostone.

  1. n. a kind of sedimentary rock resembling limestone but consisting almost entirely of the mineral dolomite

  2. a light colored mineral consisting of calcium magnesium carbonate; a source of magnesium; used as a ceramic and as fertilizer


Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg(CO). The word dolomite is also used to describe the sedimentary carbonate rock, which is composed predominantly of the mineral dolomite (also known as dolostone).

Dolomite (disambiguation)

Dolomite may refer to the following:

  • Dolomite, a mineral
  • Dolomite, also known as dolostone, a sedimentary carbonate rock
  • Déodat Gratet de Dolomieu, French geologist (after whom the rock was named)
  • Dolomite, Alabama, unincorporated community in Jefferson County
  • Dolomite, California, unincorporated community in Inyo County
  • Dolomites, section of the Alps
  • Triumph Dolomite (1934–40), sporting cars made by Triumph Motor Company
  • Triumph Dolomite, popular small car made by the British Leyland Corporation in the 1970s and 1980s

Usage examples of "dolomite".

During the warm times, dolomite was laid down under an atmosphere rich in CO2 while photosynthesizers grew furiously.

He controlled an involuntary shiver as his gaze rose up the gray and age-seared walls of the castle to the grayer and even more ancient palisade of the Dolomite Alps that loomed behind.

In the plaza a dozen white dolomite statues, now more or less dilapidated, cast stark black shadows away from the wan red sunlight.

Ginny had acquired several fine specimens, a jet buffalo, a pipestone buck sheep, a dolomite deer, a black marble fish, a serpentine snake .

And from that crag in the Dolomites the dictators of the world will emerge.

Ruby was certain that Florian was lost in one of the labyrinths at Maastricht or Valkenburg, Opal stated the opinion that he had gone to the Dolomites and was not lost at all.

There remained the possibility of an excursion to the limestone caves of the Dolomites, but Dame Beatrice dismissed the idea.

The banded ironstone of the walls overlaid dolomites and limestone with weathered yellow kimberlite streaked with unweathered blue, indicating what had previously been a classic diamondiferous kimberlite pipe.

The trail took him into a land of white dolomite crags, flat lakes reflecting the violet sky, forests of thyrse, kil and diakapre.

Mixed with carbonate of lime, it forms magnesian limestone and dolomite.

This new thermoluminescence method can aid in determining the age of limestone and other rocks, such as dolomite, quartz, fluorite, and the feldspars, which are highly thermoluminescent.

The idea was to create high-income habitats, or even entire townships, in places that would offer all the visual aesthetics of the Dolomites, and yet be as easy to walk around as Constitution Gardens.

Every time Victor spoke of dolomites on the journey homeward, she had at heart an accusation of her cowardice, her duplicity, frailty, treachery to the highest of her worship and sole support of her endurance in the world: not much blaming him: but the degrading view of herself sank them both.

His next-door neighbor stared out of the window as the Aegean Sea passed beneath them and the airliner left the sunny spring of the eastern Mediterranean for the snow-capped peaks of the Dolomites and the Bavarian Alps.

I also had to leave the blunt chiseling for Korneff, but thanks to my skill, I was able to take over the fine chiseling and scalloping, to square off the slabs, draw the lines for the four blows, and finish the dolomite borders.