Skip to main content
Select Source:

chondrite

chondrite Stony meteorite; the majority of chondrites are characterized by the presence of chondrules, and they constitute about 86% of meteorite falls. The principal minerals they contain are olivine, pyroxene, plagioclase feldspar, troilite, and the iron-nickel minerals kamacite and taenite. Chondrites are grouped according to their petrological type (texture, crystal structure, etc.) into six classes. On the basis of their chemical composition they fall into five main groups: enstatite chondrites (highly reduced, iron in metallic form); high-Fe (H) chondrites; low-Fe (L) chondrites; low-Fe/low-metal (LL) chondrites (some iron in silicate form); and carbonaceous chondrites (relatively high oxidation levels, containing volatiles). C1 chondrites are often used as a chemical model for the bulk composition of the Earth, but there are notable discrepancies, e.g. in the proportions of volatile elements.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"chondrite." A Dictionary of Earth Sciences. . Encyclopedia.com. 27 May. 2018 <http://www.encyclopedia.com>.

"chondrite." A Dictionary of Earth Sciences. . Encyclopedia.com. (May 27, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/chondrite

"chondrite." A Dictionary of Earth Sciences. . Retrieved May 27, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/chondrite

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

Chondrites

Chondrites With Zoophycus, an ichnoguild of many-branched, radial, trace fossils probably made by a worm that moved back and forth through the sediment, each branch of its burrow exploring a new area.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Chondrites." A Dictionary of Earth Sciences. . Encyclopedia.com. 27 May. 2018 <http://www.encyclopedia.com>.

"Chondrites." A Dictionary of Earth Sciences. . Encyclopedia.com. (May 27, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/chondrites

"Chondrites." A Dictionary of Earth Sciences. . Retrieved May 27, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/chondrites

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

chondrite model

chondrite model (chondritic Earth model) Hypothesis that the bulk composition of the Earth is close to that of carbonaceous chondrites.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"chondrite model." A Dictionary of Earth Sciences. . Encyclopedia.com. 27 May. 2018 <http://www.encyclopedia.com>.

"chondrite model." A Dictionary of Earth Sciences. . Encyclopedia.com. (May 27, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/chondrite-model

"chondrite model." A Dictionary of Earth Sciences. . Retrieved May 27, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/chondrite-model

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

chondrite

chondrite: see meteorite.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"chondrite." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 27 May. 2018 <http://www.encyclopedia.com>.

"chondrite." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (May 27, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/chondrite

"chondrite." The Columbia Encyclopedia, 6th ed.. . Retrieved May 27, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/chondrite

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.