Can primitive kimberlite melts be alkali‐carbonate liquids: Composition of the melt snapshots preserved in deepest mantle xenoliths
The study of kimberlite rocks is important as they provide critical information regarding the composition and dynamics of the continental mantle and are the principal source of diamonds. Despite many decades of research, the original compositions of kimberlite melts, which are thought to be derived...
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| Veröffentlicht in: | Journal of Raman spectroscopy 2020-09, Vol.51 (9), p.1849-1867 |
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| creator | Golovin, A.V. Sharygin, I.S. Korsakov, A.V. Kamenetsky, V.S. Abersteiner, A. |
| description | The study of kimberlite rocks is important as they provide critical information regarding the composition and dynamics of the continental mantle and are the principal source of diamonds. Despite many decades of research, the original compositions of kimberlite melts, which are thought to be derived from depths > 150 km, remain highly debatable due to processes that can significantly modify their composition during ascent and emplacement. Snapshots of the kimberlite‐related melts were entrapped as secondary melt inclusions hosted in olivine from sheared peridotite xenoliths from the Udachnaya‐East pipe (Siberian craton). These xenoliths originated from 180‐ to 220‐km depth and are among the deepest derived samples of mantle rocks exposed at the surface. The crystallised melt inclusions contain diverse daughter mineral assemblages (>30 mineral species), which are dominated by alkali‐rich carbonates, sulfates, and chlorides. The presence of aragonite as a daughter mineral suggests a high‐pressure origin for these inclusions. Raman‐mapping studies of unexposed inclusions show that they are dominated by carbonates (>65 vol.%), whereas silicates are subordinate (65 vol.%, especially alkali‐rich varieties), whereas silicates are subordinate ( |
| doi_str_mv | 10.1002/jrs.5701 |
| format | Article |
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Olivine‐hosted secondary melt inclusions from deepest mantle xenoliths from the Udachnaya kimberlite pipe (Siberian craton, Russia) were studied. Raman‐mapping studies of unexposed inclusions show that they are dominated by carbonates (>65 vol.%, especially alkali‐rich varieties), whereas silicates are subordinate (<13 vol.%), i.e. the melt parental for these inclusions was alkali‐carbonatitic. The presence of aragonite, a high‐pressure polymorph of CaCO3, among carbonates suggests deep mantle origin for these inclusions and they likely represent snapshots of the primitive kimberlite melt.</description><identifier>ISSN: 0377-0486</identifier><identifier>EISSN: 1097-4555</identifier><identifier>DOI: 10.1002/jrs.5701</identifier><language>eng</language><publisher>Bognor Regis: Wiley Subscription Services, Inc</publisher><subject>Alkalies ; alkaline carbonates ; Alkalis ; Aragonite ; Ascent ; Biotite ; Carbon dioxide ; Carbonates ; carbonatite and kimberlite ; Chlorine ; Composition ; Diamonds ; Inclusions ; Magma ; mantle xenoliths ; Mapping ; Melts ; Minerals ; Olivine ; Peridotite ; Raman spectroscopy ; Rocks ; Silica ; Silicates ; Silicon dioxide ; Sulfur</subject><ispartof>Journal of Raman spectroscopy, 2020-09, Vol.51 (9), p.1849-1867</ispartof><rights>2019 John Wiley & Sons, Ltd.</rights><rights>2020 John Wiley & Sons, Ltd.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2931-18eaa13b81249ab738d0f450c4b2f4946481239e943ad35307e73db67f68b3803</citedby><cites>FETCH-LOGICAL-c2931-18eaa13b81249ab738d0f450c4b2f4946481239e943ad35307e73db67f68b3803</cites><orcidid>0000-0002-4922-7658 ; 0000-0002-2734-8790 ; 0000-0002-2722-4958 ; 0000-0003-2854-7692 ; 0000-0003-1976-0395</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fjrs.5701$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fjrs.5701$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,778,782,1414,27907,27908,45557,45558</link.rule.ids></links><search><creatorcontrib>Golovin, A.V.</creatorcontrib><creatorcontrib>Sharygin, I.S.</creatorcontrib><creatorcontrib>Korsakov, A.V.</creatorcontrib><creatorcontrib>Kamenetsky, V.S.</creatorcontrib><creatorcontrib>Abersteiner, A.</creatorcontrib><title>Can primitive kimberlite melts be alkali‐carbonate liquids: Composition of the melt snapshots preserved in deepest mantle xenoliths</title><title>Journal of Raman spectroscopy</title><description>The study of kimberlite rocks is important as they provide critical information regarding the composition and dynamics of the continental mantle and are the principal source of diamonds. Despite many decades of research, the original compositions of kimberlite melts, which are thought to be derived from depths > 150 km, remain highly debatable due to processes that can significantly modify their composition during ascent and emplacement. Snapshots of the kimberlite‐related melts were entrapped as secondary melt inclusions hosted in olivine from sheared peridotite xenoliths from the Udachnaya‐East pipe (Siberian craton). These xenoliths originated from 180‐ to 220‐km depth and are among the deepest derived samples of mantle rocks exposed at the surface. The crystallised melt inclusions contain diverse daughter mineral assemblages (>30 mineral species), which are dominated by alkali‐rich carbonates, sulfates, and chlorides. The presence of aragonite as a daughter mineral suggests a high‐pressure origin for these inclusions. Raman‐mapping studies of unexposed inclusions show that they are dominated by carbonates (>65 vol.%), whereas silicates are subordinate (<13 vol.%). This indicates that the parental melt for the inclusions was carbonatitic. The key chemical features of this melt are very high contents of alkalis, carbon dioxide, chlorine, and sulfur and extremely low silica and water. Alkali‐carbonate melts entrapped in xenolith minerals likely represent snapshots of the primitive kimberlite melt. This composition is in contrast with the generally accepted notion that kimberlites originated as ultramafic silicate water‐rich melts. Experimental studies revealed that alkali‐carbonate melts are a very suitable diamond‐forming media. Therefore, our findings support the idea that some diamonds and kimberlite magmatism may be genetically related.
Olivine‐hosted secondary melt inclusions from deepest mantle xenoliths from the Udachnaya kimberlite pipe (Siberian craton, Russia) were studied. Raman‐mapping studies of unexposed inclusions show that they are dominated by carbonates (>65 vol.%, especially alkali‐rich varieties), whereas silicates are subordinate (<13 vol.%), i.e. the melt parental for these inclusions was alkali‐carbonatitic. The presence of aragonite, a high‐pressure polymorph of CaCO3, among carbonates suggests deep mantle origin for these inclusions and they likely represent snapshots of the primitive kimberlite melt.</description><subject>Alkalies</subject><subject>alkaline carbonates</subject><subject>Alkalis</subject><subject>Aragonite</subject><subject>Ascent</subject><subject>Biotite</subject><subject>Carbon dioxide</subject><subject>Carbonates</subject><subject>carbonatite and kimberlite</subject><subject>Chlorine</subject><subject>Composition</subject><subject>Diamonds</subject><subject>Inclusions</subject><subject>Magma</subject><subject>mantle xenoliths</subject><subject>Mapping</subject><subject>Melts</subject><subject>Minerals</subject><subject>Olivine</subject><subject>Peridotite</subject><subject>Raman spectroscopy</subject><subject>Rocks</subject><subject>Silica</subject><subject>Silicates</subject><subject>Silicon dioxide</subject><subject>Sulfur</subject><issn>0377-0486</issn><issn>1097-4555</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp1kDtPwzAUhS0EEqUg8RMssbCk2LHzMBuKeKoSEo85cpIb1a0Tp3Za6MbCzm_kl-AQVqY7nO-cc3UQOqVkRgkJL5bWzaKE0D00oUQkAY-iaB9NCEuSgPA0PkRHzi0JIULEdII-M9nizqpG9WoLeKWaAqxWPeAGdO9wAVjqldTq--OrlLYwrfSaVuuNqtwlzkzTGee9psWmxv1i9GHXys4tjA_oLDiwW6iwanEF0IHrcSPbXgN-h9b4roU7Rge11A5O_u4Uvd5cv2R3wfzx9j67mgdlKBgNaApSUlakNORCFglLK1LziJS8CGsueMy9wgQIzmTFIkYSSFhVxEkdpwVLCZuiszG3s2a98Z_kS7Oxra_MQ86ZIL5loM5HqrTGOQt1Pgwk7S6nJB9Gzv3I-TCyR4MRfVMadv9y-cPT8y__AxArgHU</recordid><startdate>202009</startdate><enddate>202009</enddate><creator>Golovin, A.V.</creator><creator>Sharygin, I.S.</creator><creator>Korsakov, A.V.</creator><creator>Kamenetsky, V.S.</creator><creator>Abersteiner, A.</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>7U9</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>H94</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope><scope>RC3</scope><orcidid>https://orcid.org/0000-0002-4922-7658</orcidid><orcidid>https://orcid.org/0000-0002-2734-8790</orcidid><orcidid>https://orcid.org/0000-0002-2722-4958</orcidid><orcidid>https://orcid.org/0000-0003-2854-7692</orcidid><orcidid>https://orcid.org/0000-0003-1976-0395</orcidid></search><sort><creationdate>202009</creationdate><title>Can primitive kimberlite melts be alkali‐carbonate liquids: Composition of the melt snapshots preserved in deepest mantle xenoliths</title><author>Golovin, A.V. ; Sharygin, I.S. ; Korsakov, A.V. ; Kamenetsky, V.S. ; Abersteiner, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2931-18eaa13b81249ab738d0f450c4b2f4946481239e943ad35307e73db67f68b3803</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Alkalies</topic><topic>alkaline carbonates</topic><topic>Alkalis</topic><topic>Aragonite</topic><topic>Ascent</topic><topic>Biotite</topic><topic>Carbon dioxide</topic><topic>Carbonates</topic><topic>carbonatite and kimberlite</topic><topic>Chlorine</topic><topic>Composition</topic><topic>Diamonds</topic><topic>Inclusions</topic><topic>Magma</topic><topic>mantle xenoliths</topic><topic>Mapping</topic><topic>Melts</topic><topic>Minerals</topic><topic>Olivine</topic><topic>Peridotite</topic><topic>Raman spectroscopy</topic><topic>Rocks</topic><topic>Silica</topic><topic>Silicates</topic><topic>Silicon dioxide</topic><topic>Sulfur</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Golovin, A.V.</creatorcontrib><creatorcontrib>Sharygin, I.S.</creatorcontrib><creatorcontrib>Korsakov, A.V.</creatorcontrib><creatorcontrib>Kamenetsky, V.S.</creatorcontrib><creatorcontrib>Abersteiner, A.</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Biotechnology Research Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><jtitle>Journal of Raman spectroscopy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Golovin, A.V.</au><au>Sharygin, I.S.</au><au>Korsakov, A.V.</au><au>Kamenetsky, V.S.</au><au>Abersteiner, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Can primitive kimberlite melts be alkali‐carbonate liquids: Composition of the melt snapshots preserved in deepest mantle xenoliths</atitle><jtitle>Journal of Raman spectroscopy</jtitle><date>2020-09</date><risdate>2020</risdate><volume>51</volume><issue>9</issue><spage>1849</spage><epage>1867</epage><pages>1849-1867</pages><issn>0377-0486</issn><eissn>1097-4555</eissn><abstract>The study of kimberlite rocks is important as they provide critical information regarding the composition and dynamics of the continental mantle and are the principal source of diamonds. Despite many decades of research, the original compositions of kimberlite melts, which are thought to be derived from depths > 150 km, remain highly debatable due to processes that can significantly modify their composition during ascent and emplacement. Snapshots of the kimberlite‐related melts were entrapped as secondary melt inclusions hosted in olivine from sheared peridotite xenoliths from the Udachnaya‐East pipe (Siberian craton). These xenoliths originated from 180‐ to 220‐km depth and are among the deepest derived samples of mantle rocks exposed at the surface. The crystallised melt inclusions contain diverse daughter mineral assemblages (>30 mineral species), which are dominated by alkali‐rich carbonates, sulfates, and chlorides. The presence of aragonite as a daughter mineral suggests a high‐pressure origin for these inclusions. Raman‐mapping studies of unexposed inclusions show that they are dominated by carbonates (>65 vol.%), whereas silicates are subordinate (<13 vol.%). This indicates that the parental melt for the inclusions was carbonatitic. The key chemical features of this melt are very high contents of alkalis, carbon dioxide, chlorine, and sulfur and extremely low silica and water. Alkali‐carbonate melts entrapped in xenolith minerals likely represent snapshots of the primitive kimberlite melt. This composition is in contrast with the generally accepted notion that kimberlites originated as ultramafic silicate water‐rich melts. Experimental studies revealed that alkali‐carbonate melts are a very suitable diamond‐forming media. Therefore, our findings support the idea that some diamonds and kimberlite magmatism may be genetically related.
Olivine‐hosted secondary melt inclusions from deepest mantle xenoliths from the Udachnaya kimberlite pipe (Siberian craton, Russia) were studied. Raman‐mapping studies of unexposed inclusions show that they are dominated by carbonates (>65 vol.%, especially alkali‐rich varieties), whereas silicates are subordinate (<13 vol.%), i.e. the melt parental for these inclusions was alkali‐carbonatitic. The presence of aragonite, a high‐pressure polymorph of CaCO3, among carbonates suggests deep mantle origin for these inclusions and they likely represent snapshots of the primitive kimberlite melt.</abstract><cop>Bognor Regis</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/jrs.5701</doi><tpages>19</tpages><orcidid>https://orcid.org/0000-0002-4922-7658</orcidid><orcidid>https://orcid.org/0000-0002-2734-8790</orcidid><orcidid>https://orcid.org/0000-0002-2722-4958</orcidid><orcidid>https://orcid.org/0000-0003-2854-7692</orcidid><orcidid>https://orcid.org/0000-0003-1976-0395</orcidid></addata></record> |
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| subjects | Alkalies alkaline carbonates Alkalis Aragonite Ascent Biotite Carbon dioxide Carbonates carbonatite and kimberlite Chlorine Composition Diamonds Inclusions Magma mantle xenoliths Mapping Melts Minerals Olivine Peridotite Raman spectroscopy Rocks Silica Silicates Silicon dioxide Sulfur |
| title | Can primitive kimberlite melts be alkali‐carbonate liquids: Composition of the melt snapshots preserved in deepest mantle xenoliths |
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