NWA 1152 and Sahara 00182: New primitive carbonaceous chondrites with affinities to the CR and CV groups
Identifieur interne : 000977 ( Istex/Corpus ); précédent : 000976; suivant : 000978NWA 1152 and Sahara 00182: New primitive carbonaceous chondrites with affinities to the CR and CV groups
Auteurs : Caroline L. Smith ; Sara S. Russell ; Matthieu Gounelle ; Richard C. Greenwood ; Ian A. FranchiSource :
- Meteoritics & Planetary Science [ 1086-9379 ] ; 2004-12.
Abstract
Abstract— We have investigated the mineralogy, petrography, bulk chemistry, and light element isotope composition of the ungrouped chondrites North West Africa (NWA) 1152 and Sahara 00182.
Url:
DOI: 10.1111/j.1945-5100.2004.tb00093.x
Links to Exploration step
ISTEX:DCCF794ED51299F2F54BFD179C76C8E15545FA45Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">NWA 1152 and Sahara 00182: New primitive carbonaceous chondrites with affinities to the CR and CV groups</title><author><name sortKey="Smith, Caroline L" sort="Smith, Caroline L" uniqKey="Smith C" first="Caroline L." last="Smith">Caroline L. Smith</name><affiliation><mods:affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</mods:affiliation></affiliation></author><author><name sortKey="Russell, Sara S" sort="Russell, Sara S" uniqKey="Russell S" first="Sara S." last="Russell">Sara S. Russell</name><affiliation><mods:affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</mods:affiliation></affiliation></author><author><name sortKey="Gounelle, Matthieu" sort="Gounelle, Matthieu" uniqKey="Gounelle M" first="Matthieu" last="Gounelle">Matthieu Gounelle</name><affiliation><mods:affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</mods:affiliation></affiliation><affiliation><mods:affiliation>Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, Université Paris 11, Bâtiment 104, 91405 Orsay Campus, France</mods:affiliation></affiliation></author><author><name sortKey="Greenwood, Richard C" sort="Greenwood, Richard C" uniqKey="Greenwood R" first="Richard C." last="Greenwood">Richard C. Greenwood</name><affiliation><mods:affiliation>Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, Bucks, MK7 6AA, UK</mods:affiliation></affiliation></author><author><name sortKey="Franchi, Ian A" sort="Franchi, Ian A" uniqKey="Franchi I" first="Ian A." last="Franchi">Ian A. Franchi</name><affiliation><mods:affiliation>Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, Bucks, MK7 6AA, UK</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:DCCF794ED51299F2F54BFD179C76C8E15545FA45</idno><date when="2004" year="2004">2004</date><idno type="doi">10.1111/j.1945-5100.2004.tb00093.x</idno><idno type="url">https://api.istex.fr/document/DCCF794ED51299F2F54BFD179C76C8E15545FA45/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000977</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000977</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">NWA 1152 and Sahara 00182: New primitive carbonaceous chondrites with affinities to the CR and CV groups</title><author><name sortKey="Smith, Caroline L" sort="Smith, Caroline L" uniqKey="Smith C" first="Caroline L." last="Smith">Caroline L. Smith</name><affiliation><mods:affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</mods:affiliation></affiliation></author><author><name sortKey="Russell, Sara S" sort="Russell, Sara S" uniqKey="Russell S" first="Sara S." last="Russell">Sara S. Russell</name><affiliation><mods:affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</mods:affiliation></affiliation></author><author><name sortKey="Gounelle, Matthieu" sort="Gounelle, Matthieu" uniqKey="Gounelle M" first="Matthieu" last="Gounelle">Matthieu Gounelle</name><affiliation><mods:affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</mods:affiliation></affiliation><affiliation><mods:affiliation>Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, Université Paris 11, Bâtiment 104, 91405 Orsay Campus, France</mods:affiliation></affiliation></author><author><name sortKey="Greenwood, Richard C" sort="Greenwood, Richard C" uniqKey="Greenwood R" first="Richard C." last="Greenwood">Richard C. Greenwood</name><affiliation><mods:affiliation>Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, Bucks, MK7 6AA, UK</mods:affiliation></affiliation></author><author><name sortKey="Franchi, Ian A" sort="Franchi, Ian A" uniqKey="Franchi I" first="Ian A." last="Franchi">Ian A. Franchi</name><affiliation><mods:affiliation>Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, Bucks, MK7 6AA, UK</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Meteoritics & Planetary Science</title><idno type="ISSN">1086-9379</idno><idno type="eISSN">1945-5100</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2004-12">2004-12</date><biblScope unit="volume">39</biblScope><biblScope unit="issue">12</biblScope><biblScope unit="page" from="2009">2009</biblScope><biblScope unit="page" to="2032">2032</biblScope></imprint><idno type="ISSN">1086-9379</idno></series><idno type="istex">DCCF794ED51299F2F54BFD179C76C8E15545FA45</idno><idno type="DOI">10.1111/j.1945-5100.2004.tb00093.x</idno><idno type="ArticleID">MAPS93</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1086-9379</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Abstract— We have investigated the mineralogy, petrography, bulk chemistry, and light element isotope composition of the ungrouped chondrites North West Africa (NWA) 1152 and Sahara 00182.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Caroline L. SMITH</name><affiliations><json:string>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</json:string></affiliations></json:item><json:item><name>Sara S. RUSSELL</name><affiliations><json:string>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</json:string></affiliations></json:item><json:item><name>Matthieu GOUNELLE</name><affiliations><json:string>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</json:string><json:string>Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, Université Paris 11, Bâtiment 104, 91405 Orsay Campus, France</json:string></affiliations></json:item><json:item><name>Richard C. GREENWOOD</name><affiliations><json:string>Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, Bucks, MK7 6AA, UK</json:string></affiliations></json:item><json:item><name>Ian A. FRANCHI</name><affiliations><json:string>Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, Bucks, MK7 6AA, UK</json:string></affiliations></json:item></author><articleId><json:string>MAPS93</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><qualityIndicators><score>5.312</score><pdfVersion>1.3</pdfVersion><pdfPageSize>612 x 792 pts (letter)</pdfPageSize><refBibsNative>true</refBibsNative><keywordCount>0</keywordCount><abstractCharCount>188</abstractCharCount><pdfWordCount>10217</pdfWordCount><pdfCharCount>67963</pdfCharCount><pdfPageCount>24</pdfPageCount><abstractWordCount>26</abstractWordCount></qualityIndicators><title>NWA 1152 and Sahara 00182: New primitive carbonaceous chondrites with affinities to the CR and CV groups</title><genre><json:string>article</json:string></genre><host><volume>39</volume><publisherId><json:string>MAPS</json:string></publisherId><pages><total>24</total><last>2032</last><first>2009</first></pages><issn><json:string>1086-9379</json:string></issn><issue>12</issue><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><eissn><json:string>1945-5100</json:string></eissn><title>Meteoritics & Planetary Science</title><doi><json:string>10.1111/(ISSN)1945-5100</json:string></doi></host><publicationDate>2004</publicationDate><copyrightDate>2004</copyrightDate><doi><json:string>10.1111/j.1945-5100.2004.tb00093.x</json:string></doi><id>DCCF794ED51299F2F54BFD179C76C8E15545FA45</id><score>0.07523061</score><fulltext><json:item><original>true</original><mimetype>application/pdf</mimetype><extension>pdf</extension><uri>https://api.istex.fr/document/DCCF794ED51299F2F54BFD179C76C8E15545FA45/fulltext/pdf</uri></json:item><json:item><original>false</original><mimetype>application/zip</mimetype><extension>zip</extension><uri>https://api.istex.fr/document/DCCF794ED51299F2F54BFD179C76C8E15545FA45/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/DCCF794ED51299F2F54BFD179C76C8E15545FA45/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">NWA 1152 and Sahara 00182: New primitive carbonaceous chondrites with affinities to the CR and CV groups</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><availability><p>2004 The Meteoritical Society</p></availability><date>2004</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">NWA 1152 and Sahara 00182: New primitive carbonaceous chondrites with affinities to the CR and CV groups</title><author xml:id="author-1"><persName><forename type="first">Caroline L.</forename><surname>SMITH</surname></persName><note type="biography">Division of Earth Sciences, Centre for Geosciences, University of Glasgow, Gregory Building, Lilybank Gardens, Glasgow, G12 8QQ, UK</note><affiliation>Division of Earth Sciences, Centre for Geosciences, University of Glasgow, Gregory Building, Lilybank Gardens, Glasgow, G12 8QQ, UK</affiliation><note type="correspondence"><p>Correspondence:</p></note><affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</affiliation></author><author xml:id="author-2"><persName><forename type="first">Sara S.</forename><surname>RUSSELL</surname></persName><affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</affiliation></author><author xml:id="author-3"><persName><forename type="first">Matthieu</forename><surname>GOUNELLE</surname></persName><affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</affiliation><affiliation>Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, Université Paris 11, Bâtiment 104, 91405 Orsay Campus, France</affiliation></author><author xml:id="author-4"><persName><forename type="first">Richard C.</forename><surname>GREENWOOD</surname></persName><affiliation>Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, Bucks, MK7 6AA, UK</affiliation></author><author xml:id="author-5"><persName><forename type="first">Ian A.</forename><surname>FRANCHI</surname></persName><affiliation>Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, Bucks, MK7 6AA, UK</affiliation></author></analytic><monogr><title level="j">Meteoritics & Planetary Science</title><idno type="pISSN">1086-9379</idno><idno type="eISSN">1945-5100</idno><idno type="DOI">10.1111/(ISSN)1945-5100</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2004-12"></date><biblScope unit="volume">39</biblScope><biblScope unit="issue">12</biblScope><biblScope unit="page" from="2009">2009</biblScope><biblScope unit="page" to="2032">2032</biblScope></imprint></monogr><idno type="istex">DCCF794ED51299F2F54BFD179C76C8E15545FA45</idno><idno type="DOI">10.1111/j.1945-5100.2004.tb00093.x</idno><idno type="ArticleID">MAPS93</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2004</date></creation><langUsage><language ident="en">en</language></langUsage><abstract><p>Abstract— We have investigated the mineralogy, petrography, bulk chemistry, and light element isotope composition of the ungrouped chondrites North West Africa (NWA) 1152 and Sahara 00182.</p></abstract><abstract><p>NWA 1152 contains predominantly type 1 porphyritic olivine (PO) and porphyritic olivinepyroxene (POP) chondrules. Chondrule silicates are magnesium‐rich (Fo98.8 ± 1.2, n = 36; Fs2.3 ± 2.1 Wo1.2 ± 0.3, n = 23). Matrix comprises ˜40 vol% of the sample and is composed of a micron sized silicate groundmass with larger silicate, sulfide, magnetite, and Fe‐Ni metal (Ni ˜50 wt%) grains. Phyllosilicates were not observed in the matrix. Refractory inclusions are rare (0.3 vol%) and are spinel pyroxene aggregates or amoeboid olivine aggregates; melilite is absent from the refractory inclusions. Sahara 00182 contains predominantly type 1 PO chondrules, POP chondrules are less common. Most chondrules contain blebs of, and are often rimmed with, Fe‐Ni metal and sulfide. Chondrule phenocrysts are magnesium‐rich (Fo92.2 ± 0.6, n = 129; Fs4.4 ± 1.8 Wo1.3 ± 1.1, n = 16). Matrix comprises ˜30 vol% of the meteorite and is predominantly sub‐micron silicates, with rare larger silicate gains. Matrix Fe‐Ni metal (mean Ni = 5.8 wt%) and sulfide grains are up to mm scale. No phyllosilicates were observed in the matrix. Refractory inclusions are rare (1.1 vol%) and melilite is absent. The oxygen isotope composition of NWA 1152 falls within the range of the CV chondrites with δ17O = −3.43%0 δ18O = 0.70%0 and is similar to Sahara 00182, δ17O = −3.89%0, δ18O = −0.19%0 (Grossman and Zipfel 2001).</p></abstract><abstract><p>Based on mineralogical and petrographic characteristics, we suggest NWA 1152 and Sahara 00182 show many similarities with the CR chondrites, however, oxygen isotopes suggest affinity with the CVs. Thus, neither sample can be assigned to any of the currently known carbonaceous chondrite groups based on traditionally recognized characteristics. Both samples demonstrate the complexity of inter‐ and intra‐group relationships of the carbonaceous chondrites. Whatever their classification, N WA 1152 and Sahara 00182 represent a source of relatively pristine solar system material.</p></abstract></profileDesc><revisionDesc><change when="2004-12">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><original>false</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/DCCF794ED51299F2F54BFD179C76C8E15545FA45/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1945-5100</doi><issn type="print">1086-9379</issn><issn type="electronic">1945-5100</issn><idGroup><id type="product" value="MAPS"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="METEORITICS AND PLANETARY SCIENCE">Meteoritics & Planetary Science</title></titleGroup></publicationMeta><publicationMeta level="part" position="12012"><doi origin="wiley">10.1111/maps.2004.39.issue-12</doi><numberingGroup><numbering type="journalVolume" number="39">39</numbering><numbering type="journalIssue" number="12">12</numbering></numberingGroup><coverDate startDate="2004-12">December 2004</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="9" status="forIssue"><doi origin="wiley">10.1111/j.1945-5100.2004.tb00093.x</doi><idGroup><id type="unit" value="MAPS93"></id></idGroup><countGroup><count type="pageTotal" number="24"></count></countGroup><titleGroup><title type="tocHeading1">Original Article</title></titleGroup><copyright>2004 The Meteoritical Society</copyright><eventGroup><event type="firstOnline" date="2010-01-26"></event><event type="publishedOnlineFinalForm" date="2010-01-26"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.6 mode:FullText source:HeaderRef result:HeaderRef" date="2010-04-21"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:4.0.1" date="2014-03-20"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-31"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="2009">2009</numbering><numbering type="pageLast" number="2032">2032</numbering></numberingGroup><correspondenceTo><email>c.smith@earthsci.gla.ac.uk</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:MAPS.MAPS93.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Received 10 September 2003; revision accepted 4 October 2004</unparsedEditorialHistory><countGroup><count type="referenceTotal" number="59"></count><count type="linksCrossRef" number="8"></count></countGroup><titleGroup><title type="main">NWA 1152 and Sahara 00182: New primitive carbonaceous chondrites with affinities to the CR and CV groups</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1" noteRef="#fn1" corresponding="yes"><personName><givenNames>Caroline L.</givenNames><familyName>SMITH</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a1"><personName><givenNames>Sara S.</givenNames><familyName>RUSSELL</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1 #a2"><personName><givenNames>Matthieu</givenNames><familyName>GOUNELLE</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a3"><personName><givenNames>Richard C.</givenNames><familyName>GREENWOOD</familyName></personName></creator><creator creatorRole="author" xml:id="cr5" affiliationRef="#a3"><personName><givenNames>Ian A.</givenNames><familyName>FRANCHI</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="GB"><unparsedAffiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="FR"><unparsedAffiliation>Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, Université Paris 11, Bâtiment 104, 91405 Orsay Campus, France</unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="GB"><unparsedAffiliation>Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, Bucks, MK7 6AA, UK</unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main" xml:lang="en"><p><b>Abstract—</b> We have investigated the mineralogy, petrography, bulk chemistry, and light element isotope composition of the ungrouped chondrites North West Africa (NWA) 1152 and Sahara 00182.</p><p>NWA 1152 contains predominantly type 1 porphyritic olivine (PO) and porphyritic olivinepyroxene (POP) chondrules. Chondrule silicates are magnesium‐rich (Fo<sub>98.8 ± 1.2</sub>, n = 36; Fs<sub>2.3 ± 2.1</sub> Wo<sub>1.2 ± 0.3</sub>, n = 23). Matrix comprises ˜40 vol% of the sample and is composed of a micron sized silicate groundmass with larger silicate, sulfide, magnetite, and Fe‐Ni metal (Ni ˜50 wt%) grains. Phyllosilicates were not observed in the matrix. Refractory inclusions are rare (0.3 vol%) and are spinel pyroxene aggregates or amoeboid olivine aggregates; melilite is absent from the refractory inclusions. Sahara 00182 contains predominantly type 1 PO chondrules, POP chondrules are less common. Most chondrules contain blebs of, and are often rimmed with, Fe‐Ni metal and sulfide. Chondrule phenocrysts are magnesium‐rich (Fo<sub>92.2 ± 0.6</sub>, n = 129; Fs<sub>4.4 ± 1.8</sub> Wo<sub>1.3 ± 1.1</sub>, n = 16). Matrix comprises ˜30 vol% of the meteorite and is predominantly sub‐micron silicates, with rare larger silicate gains. Matrix Fe‐Ni metal (mean Ni = 5.8 wt%) and sulfide grains are up to mm scale. No phyllosilicates were observed in the matrix. Refractory inclusions are rare (1.1 vol%) and melilite is absent. The oxygen isotope composition of NWA 1152 falls within the range of the CV chondrites with δ<sup>17</sup>O = −3.43%0 δ<sup>18</sup>O = 0.70%0 and is similar to Sahara 00182, δ<sup>17</sup>O = −3.89%0, δ<sup>18</sup>O = −0.19%0 (Grossman and Zipfel 2001).</p><p>Based on mineralogical and petrographic characteristics, we suggest NWA 1152 and Sahara 00182 show many similarities with the CR chondrites, however, oxygen isotopes suggest affinity with the CVs. Thus, neither sample can be assigned to any of the currently known carbonaceous chondrite groups based on traditionally recognized characteristics. Both samples demonstrate the complexity of inter‐ and intra‐group relationships of the carbonaceous chondrites. Whatever their classification, N WA 1152 and Sahara 00182 represent a source of relatively pristine solar system material.</p></abstract></abstractGroup></contentMeta><noteGroup><note xml:id="fn1"><label>†</label><p>Division of Earth Sciences, Centre for Geosciences, University of Glasgow, Gregory Building, Lilybank Gardens, Glasgow, G12 8QQ, UK</p></note></noteGroup></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>NWA 1152 and Sahara 00182: New primitive carbonaceous chondrites with affinities to the CR and CV groups</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>NWA 1152 and Sahara 00182: New primitive carbonaceous chondrites with affinities to the CR and CV groups</title></titleInfo><name type="personal"><namePart type="given">Caroline L.</namePart><namePart type="family">SMITH</namePart><affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</affiliation><description>Division of Earth Sciences, Centre for Geosciences, University of Glasgow, Gregory Building, Lilybank Gardens, Glasgow, G12 8QQ, UK</description><description>Correspondence: </description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Sara S.</namePart><namePart type="family">RUSSELL</namePart><affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Matthieu</namePart><namePart type="family">GOUNELLE</namePart><affiliation>Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK</affiliation><affiliation>Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, Université Paris 11, Bâtiment 104, 91405 Orsay Campus, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Richard C.</namePart><namePart type="family">GREENWOOD</namePart><affiliation>Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, Bucks, MK7 6AA, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Ian A.</namePart><namePart type="family">FRANCHI</namePart><affiliation>Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, Bucks, MK7 6AA, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2004-12</dateIssued><edition>Received 10 September 2003; revision accepted 4 October 2004</edition><copyrightDate encoding="w3cdtf">2004</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="references">59</extent></physicalDescription><abstract>Abstract— We have investigated the mineralogy, petrography, bulk chemistry, and light element isotope composition of the ungrouped chondrites North West Africa (NWA) 1152 and Sahara 00182.</abstract><abstract>NWA 1152 contains predominantly type 1 porphyritic olivine (PO) and porphyritic olivinepyroxene (POP) chondrules. Chondrule silicates are magnesium‐rich (Fo98.8 ± 1.2, n = 36; Fs2.3 ± 2.1 Wo1.2 ± 0.3, n = 23). Matrix comprises ˜40 vol% of the sample and is composed of a micron sized silicate groundmass with larger silicate, sulfide, magnetite, and Fe‐Ni metal (Ni ˜50 wt%) grains. Phyllosilicates were not observed in the matrix. Refractory inclusions are rare (0.3 vol%) and are spinel pyroxene aggregates or amoeboid olivine aggregates; melilite is absent from the refractory inclusions. Sahara 00182 contains predominantly type 1 PO chondrules, POP chondrules are less common. Most chondrules contain blebs of, and are often rimmed with, Fe‐Ni metal and sulfide. Chondrule phenocrysts are magnesium‐rich (Fo92.2 ± 0.6, n = 129; Fs4.4 ± 1.8 Wo1.3 ± 1.1, n = 16). Matrix comprises ˜30 vol% of the meteorite and is predominantly sub‐micron silicates, with rare larger silicate gains. Matrix Fe‐Ni metal (mean Ni = 5.8 wt%) and sulfide grains are up to mm scale. No phyllosilicates were observed in the matrix. Refractory inclusions are rare (1.1 vol%) and melilite is absent. The oxygen isotope composition of NWA 1152 falls within the range of the CV chondrites with δ17O = −3.43%0 δ18O = 0.70%0 and is similar to Sahara 00182, δ17O = −3.89%0, δ18O = −0.19%0 (Grossman and Zipfel 2001).</abstract><abstract>Based on mineralogical and petrographic characteristics, we suggest NWA 1152 and Sahara 00182 show many similarities with the CR chondrites, however, oxygen isotopes suggest affinity with the CVs. Thus, neither sample can be assigned to any of the currently known carbonaceous chondrite groups based on traditionally recognized characteristics. Both samples demonstrate the complexity of inter‐ and intra‐group relationships of the carbonaceous chondrites. Whatever their classification, N WA 1152 and Sahara 00182 represent a source of relatively pristine solar system material.</abstract><relatedItem type="host"><titleInfo><title>Meteoritics & Planetary Science</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">1086-9379</identifier><identifier type="eISSN">1945-5100</identifier><identifier type="DOI">10.1111/(ISSN)1945-5100</identifier><identifier type="PublisherID">MAPS</identifier><part><date>2004</date><detail type="volume"><caption>vol.</caption><number>39</number></detail><detail type="issue"><caption>no.</caption><number>12</number></detail><extent unit="pages"><start>2009</start><end>2032</end><total>24</total></extent></part></relatedItem><identifier type="istex">DCCF794ED51299F2F54BFD179C76C8E15545FA45</identifier><identifier type="DOI">10.1111/j.1945-5100.2004.tb00093.x</identifier><identifier type="ArticleID">MAPS93</identifier><accessCondition type="use and reproduction" contentType="copyright">2004 The Meteoritical Society</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/CobaltMaghrebV1/Data/Istex/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000977 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Istex/Corpus/biblio.hfd -nk 000977 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Terre
|area= CobaltMaghrebV1
|flux= Istex
|étape= Corpus
|type= RBID
|clé= ISTEX:DCCF794ED51299F2F54BFD179C76C8E15545FA45
|texte= NWA 1152 and Sahara 00182: New primitive carbonaceous chondrites with affinities to the CR and CV groups
}}
| This area was generated with Dilib version V0.6.32. |  |