dolomite

[doh-luh-mahyt, dol-uh-]
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:
1785–95; < French, named after D. de Dolom(ieu) (1750–1801), French mineralogist; see -ite1

dolomitic [dol-uh-mit-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To dolomite
Collins
World English Dictionary
dolomite (ˈdɒləˌmaɪt)
 
n
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
 
[C18: named after Déodat de Dolomieu (1750--1801), French mineralogist]
 
dolomitic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

dolomite
1794, named for Fr. 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
Cite This Source
American Heritage
Science Dictionary
dolomite   (dō'lə-mīt', dŏl'ə-mīt')  Pronunciation Key 
  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.
Cite This Source
Example sentences
Karst is the geologic term for landscapes formed mainly by the dissolving of
  limestone or dolomite bedrock.
Generally, this rock is made of limestone or dolomite, both of which are easily
  dissolved by seeping groundwater.
The rhombic dolomite faces are often covered with a thin film of pyrobitumen.
Dolomite is not only harder than regular limestone, it also can't be dissolved
  by slightly acidic rainwater.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;