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dolomite

[doh-luh-mahyt, dol-uh-] /ˈdoʊ ləˌmaɪt, ˈdɒl ə-/
noun
1.
a very common mineral, calcium magnesium carbonate, CaMg(CO 3) 2 , occurring in crystals and in masses.
2.
a rock consisting essentially or largely of this mineral.
Origin
1785-1795
1785-95; < French, named after D. de Dolom(ieu) (1750-1801), French mineralogist; see -ite1
Related forms
dolomitic
[dol-uh-mit-ik] /ˌdɒl əˈmɪt ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for dolomitic

dolomite

/ˈdɒləˌmaɪt/
noun
1.
a white mineral often tinted by impurities, found in sedimentary rocks and veins. It is used in the manufacture of cement and as a building stone (marble). Composition: calcium magnesium carbonate. Formula: CaMg(CO3)2. Crystal structure: hexagonal (rhombohedral)
2.
a sedimentary rock resembling limestone but consisting principally of the mineral dolomite. It is an important source of magnesium and its compounds, and is used as a building material and refractory
Derived Forms
dolomitic (ˌdɒləˈmɪtɪk) adjective
Word Origin
C18: named after Déodat de Dolomieu (1750–1801), French mineralogist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for dolomitic

dolomite

n.

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

Online Etymology Dictionary, © 2010 Douglas Harper
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dolomitic in Science
dolomite
  (dō'lə-mīt', dŏl'ə-mīt')   
  1. A gray, pink, or white rhombohedral mineral. Dolomite occurs in curved saddlelike crystals with a pearly to glassy luster. It is a common rock-forming mineral. Chemical formula: CaMg(CO3)2.

  2. A sedimentary rock containing more than 50 percent of the mineral dolomite by weight.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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