Article(id=1289306848016843326, tenantId=1146029695717560320, journalId=1287019341717536775, issueId=1289306742370709735, articleNumber=null, orderNo=null, doi=10.3724/j.1000-4734.2025.45.123, pmid=null, cstr=32252.14.j.1000-4734.2025.45.123, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1680105600000, receivedDateStr=2023-03-30, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1785324306729, onlineDateStr=2026-07-29, pubDate=1770652800000, pubDateStr=2026-02-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1785324306729, onlineIssueDateStr=2026-07-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1785324306729, creator=13701087609, updateTime=1785324306729, updator=13701087609, issue=Issue{id=1289306742370709735, tenantId=1146029695717560320, journalId=1287019341717536775, year='2026', volume='46', issue='1', pageStart='20', pageEnd='170', issueExtLink='null', onlineDate='null', pubDate='1770652800000', pubDateStr='2026-02-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1785324281542, creator='13701087609', updateTime=1785388512677, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1289576147356860923, tenantId=1146029695717560320, journalId=1287019341717536775, issueId=1289306742370709735, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1289576147356860924, tenantId=1146029695717560320, journalId=1287019341717536775, issueId=1289306742370709735, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=86, endPage=94, ext={EN=ArticleExt(id=1289306848205587007, articleId=1289306848016843326, tenantId=1146029695717560320, journalId=1287019341717536775, language=EN, title=Theoretical studies on the occurrence mechanism of structural water in the lattice of Bridgmanite minerals at the core-mantle boundary of the Earth, columnId=null, journalTitle=Acta Mineralogica Sinica, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Bridgmanite (Mg-Pv), as the most abundant mineral in the lower mantle, has been discussed by many scholars in recent years regarding to the different substitution mechanisms of structural water in Bridgmanite and their important scientific significance for the content of structural water in the lower mantle. The core–mantle boundary of the Earth is a key area bearing the processes of plate subduction and Mantle convection. To explore the relative stabilities among different occurrence mechanisms of structural water in Bridgmanite in this area will help us to understand the content, distribution, migration and circulation rules of water in the deep Earth. In this study, we have systematically studied the relative stabilities of three different substitution mechanisms of structural water in Bridgmanite including the VMg2H(V′′Mg+2OH·), VSi4H(V′′′′Si+4OH·) and AlSiH(Al′si+OH·) under temperature and pressure conditions at the core–mantle boundary of the Earth through the first principles molecular dynamics simulation. The research results indicate that among the three substitution mechanisms under high pressure, the stability of the AlSiH(Al′si+OH·) substitution mechanism was significantly affected by the temperature, and it was increased with the increase of temperature. On the other hand, the researches on the relative stabilities of the VSi4H(V′′′′Si+4OH·) and VMg2H(V′′Mg+2OH·) mechanisms show that under the condition of core–mantle boundary of the Earth, structural water may be more favourable to enter the lattice of Bridgmanite with the VSi4H(V′′′′Si+4OH·) substitution mechanism, that is, to occupy the Si site in the lattice of Bridgmanite. However, if the concentration of Si vacancy in Bridgmanite at the core–mantle boundary of the Earth is very low, the capability of structural water entering into the lattice of Bridgmanite through the dissolution of cation vacancy defects will also be very limited. In contrast, the relatively high stability of the AlSiH(Al′si+OH·) substitution mechanism under high temperature and high pressure suggests that the Al rich region at the core–mantle boundary of the Earth could have considerable water content, possibly as high as about 0.5 wt.%. In addition, the molecular hydrogen in the interstitial sites of the lattice of Bridgmanite may also have a certain degree of stability under high temperature and high pressure conditions at the bottom of the lower mantle. These provide some new insights into the occurrence state and source of structural water within the interior of the Earth.
, authors=Lei XIE
1, 2, Yi WANG
1, 2, Jiajun JIANG
1, Feiwu ZHANG
1, *, authorsList=Lei XIE, Yi WANG, Jiajun JIANG, Feiwu ZHANG, authorCompany=null, correspAuthors=Feiwu ZHANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1289306850495676997, articleId=1289306848016843326, tenantId=1146029695717560320, journalId=1287019341717536775, language=CN, title=核幔边界处布里奇曼石矿物晶格中结构水赋存机制的理论研究, columnId=null, journalTitle=矿物学报, columnName=, runingTitle=null, highlight=null, articleAbstract=
布里奇曼石(Mg-Pv)作为下地幔最丰富的矿物,近年来众多学者讨论了布里奇曼石中结构水的不同取代机制以及它们对于下地幔结构水含量的重要科学意义。核幔边界作为承载着板块俯冲和地幔对流过程的关键区域,探究该区域中结构水在布里奇曼石中不同赋存机制间的相对稳定性将有助于深入理解水在地球深部的含量、分布、迁移和循环规律。本次研究通过第一性原理分子动力学模拟,系统研究了核幔边界温压条件下VMg2H(V′′Mg+2OH·)、VSi4H(V′′′′Si+4OH·)和AlSiH(Al′si+OH·)三种不同的取代机制在布里奇曼石中的相对稳定性。研究结果表明,高压下的三种取代机制中,温度会显著影响AlSiH(Al′si+OH·)取代机制的稳定性,且其稳定性随着温度升高而增加。另一方面,VSi4H(V′′′′Si+4OH·)机制和VMg2H(V′′Mg+2OH·)机制的相对稳定性研究显示,在核幔边界条件下,结构水可能更倾向于以前者的方式取代进入矿物中,即占据矿物晶格中的Si位,但如果核幔边界中Si空位的浓度很低,结构水通过阳离子空位缺陷溶解进入布里奇曼石中的能力也会非常有限。而与之相对的,AlSiH(Al′si+OH·)机制在高温高压下相对较高的稳定性则暗示了核幔边界处富Al的区域很可能具有相当可观的含水量,可能高达约0.5%(质量分数)。另外,布里奇曼石填隙位的分子氢(H2)在下地幔底部的高温高压条件中也可能具有一定程度的稳定性,这为地球内部水赋存的形式和来源带来了一些新的启示。
, authors=谢雷
1, 2, 王异
1, 2, 蒋佳俊
1, 张飞武
1, *, authorsList=谢雷, 王异, 蒋佳俊, 张飞武, authorCompany=null, correspAuthors=张飞武, authorNote=
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1State key Laboratory of Critical Mineral Research and Exploration, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang Guizhou 550081, China
2University of the Chinese Academy of Sciences, Beijing 100049, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1289525468500176934, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, authorId=1289525468336599074, language=CN, stringName=谢雷, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1中国科学院地球化学研究所 关键矿产成矿与预测全国重点实验室,贵州 贵阳 550081
2中国科学院大学,北京 100049, bio={"content":"
谢雷,男,1996年生,硕士,理论地球化学和计算矿物物理专业。E-mail:xl631733348@vip.qq.com。
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谢雷,男,1996年生,硕士,理论地球化学和计算矿物物理专业。E-mail:xl631733348@vip.qq.com。
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1State key Laboratory of Critical Mineral Research and Exploration, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang Guizhou 550081, China
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1中国科学院地球化学研究所 关键矿产成矿与预测全国重点实验室,贵州 贵阳 550081
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2中国科学院大学,北京 100049)])]), Author(id=1289525468806361134, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1289525468890247216, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, authorId=1289525468806361134, language=EN, stringName=Jiajun JIANG, firstName=Jiajun, middleName=null, lastName=JIANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1State key Laboratory of Critical Mineral Research and Exploration, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang Guizhou 550081, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1289525468948967473, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, authorId=1289525468806361134, language=CN, stringName=蒋佳俊, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1中国科学院地球化学研究所 关键矿产成矿与预测全国重点实验室,贵州 贵阳 550081, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1289525468135272475, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, xref=1, ext=[AuthorCompanyExt(id=1289525468143661084, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, companyId=1289525468135272475, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1State key Laboratory of Critical Mineral Research and Exploration, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang Guizhou 550081, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1289525469154488374, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, authorId=1289525469016076339, language=CN, stringName=张飞武, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, *, address=
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2, F, and Cl in the HIMU mantle: A new window provided by melt inclusions from oceanic hot spot lavas at Mangaia, Cook Islands[J]. Geochemistry, Geophysics, Geosystems, 2014, 15(11): 4445–4467., articleTitle=null, refAbstract=null), Reference(id=1289525473365569645, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=39, rfOrder=38, authorNames=null, journalName=null, refType=null, unstructuredReference=Dixon J E, Dixon T H, Bell D R, et al. Lateral variation in upper mantle viscosity: Role of water[J]. Earth and Planetary Science Letters, 2004, 222(2): 451–467., articleTitle=null, refAbstract=null), Reference(id=1289525473436872814, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=40, rfOrder=39, authorNames=null, journalName=null, refType=null, unstructuredReference=Gurenko A A, Kamenetsky V S, Kerr A C. Oxygen isotopes and volatile contents of the Gorgona komatiites, Colombia: A confirmation of the deep mantle origin of H
2O[J]. Earth and Planetary Science Letters, 2016, 454: 154–165., articleTitle=null, refAbstract=null), Reference(id=1289525473508175983, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=41, rfOrder=40, authorNames=null, journalName=null, refType=null, unstructuredReference=Hallis L J, Huss G R, Nagashima K, et al. Evidence for primordial water in Earth’s deep mantle[J]. Science, 2015, 350(6262): 795–797., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1289525468135272475, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, xref=1, ext=[AuthorCompanyExt(id=1289525468143661084, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, companyId=1289525468135272475, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2中国科学院大学,北京 100049)])], figs=[ArticleFig(id=1289525469968183359, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, language=EN, label=Fig. 1, caption=
Different lattice structures of Bridgemanite for various substitution mechanisms of its structural water, figureFileSmall=3JuH+eD5b8QVxA8LCV5i/Q==, figureFileBig=absxnVMfb7jyU5aTrNh/5w==, tableContent=null), ArticleFig(id=1289525470031097920, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, language=CN, label=图1, caption=
布里奇曼石中不同含水机制的晶格结构a. VMg2H取代机制; b. 是VSi4H取代机制; c. 是AlSiH取代机制;d. 是填隙位中的分子氢(H2);橙黄色球体为Mg原子,深蓝色的球体为Si原子,红色的球体为O原子、白色的球体为H原子。
, figureFileSmall=3JuH+eD5b8QVxA8LCV5i/Q==, figureFileBig=absxnVMfb7jyU5aTrNh/5w==, tableContent=null), ArticleFig(id=1289525470127566913, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, language=EN, label=Fig. 2, caption=
Changes of the H-H distances (bond length) and RMSD values for the interstitial molecular hydrogen of bridgemanite with the change of time, figureFileSmall=uYI/bL9xsP4SUeq5id5P8g==, figureFileBig=TDC0qQCSSoVzeoNtfV7RHA==, tableContent=null), ArticleFig(id=1289525470190481474, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, language=CN, label=图2, caption=
布里奇曼石填隙位分子氢的氢-氢距离(键长)和RMSD随时间的变化, figureFileSmall=uYI/bL9xsP4SUeq5id5P8g==, figureFileBig=TDC0qQCSSoVzeoNtfV7RHA==, tableContent=null), ArticleFig(id=1289525470261784643, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, language=EN, label=Table 1, caption=
Volumes and formation energies of the phases calculated at 135 GPa
, figureFileSmall=null, figureFileBig=null, tableContent=
物相 | 体积/(Å3/atom) | 形成能/(eV/f.u.) |
T=0 K |
MgSiO3 | 6.119 | –5.376 |
(Mg1-xH2x)SiO3 | 6.011 | –5.586 |
Mg(Si1-xH4x)O3 | 5.898 | –5.539 |
Mg(Si1-xAlxHx)O3 | 6.075 | –5.264 |
MgSiO3H2x | 6.016 | –5.269 |
(Mg1-xAlx)(Si1-xAlx)O3 | 6.124 | –5.438 |
MgO | 6.459 | 0.860 |
T=4000 K |
MgSiO3 | 6.332 | –13.717(±0.055) |
(Mg1-xH2x)SiO3 | 6.287 | –14.009(±0.046) |
Mg(Si1-xH4x)O3 | 6.106 | –14.079(±0.036) |
Mg(Si1-xAlxHx)O3 | 6.291 | –13.835(±0.049) |
MgSiO3H2x | 6.231 | –13.818(±0.052) |
(Mg1-xAlx)(Si1-xAlx)O3 | 6.329 | –13.798(±0.054) |
MgO | 6.689 | –2.589(±0.023) |
), ArticleFig(id=1289525470349865028, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, language=CN, label=表1, caption=
135 GPa条件下计算得到物相的体积与形成能
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物相 | 体积/(Å3/atom) | 形成能/(eV/f.u.) |
T=0 K |
MgSiO3 | 6.119 | –5.376 |
(Mg1-xH2x)SiO3 | 6.011 | –5.586 |
Mg(Si1-xH4x)O3 | 5.898 | –5.539 |
Mg(Si1-xAlxHx)O3 | 6.075 | –5.264 |
MgSiO3H2x | 6.016 | –5.269 |
(Mg1-xAlx)(Si1-xAlx)O3 | 6.124 | –5.438 |
MgO | 6.459 | 0.860 |
T=4000 K |
MgSiO3 | 6.332 | –13.717(±0.055) |
(Mg1-xH2x)SiO3 | 6.287 | –14.009(±0.046) |
Mg(Si1-xH4x)O3 | 6.106 | –14.079(±0.036) |
Mg(Si1-xAlxHx)O3 | 6.291 | –13.835(±0.049) |
MgSiO3H2x | 6.231 | –13.818(±0.052) |
(Mg1-xAlx)(Si1-xAlx)O3 | 6.329 | –13.798(±0.054) |
MgO | 6.689 | –2.589(±0.023) |
), ArticleFig(id=1289525470450528325, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, language=EN, label=Table 2, caption=
Reaction energies and partitioning coefficients for different substitution mechanisms of structural water in Bridgmanite at 135 GPa
, figureFileSmall=null, figureFileBig=null, tableContent=
取代机制的比较 | 反应能/(eV/f. u.) | 分配系数 |
AlSiH/VMg2H | –0.235±0.122 (–0.002) | 1.98(±0.70) |
VSi4H/VMg2H | –0.150±0.115 (–0.251) | 1.54(±0.51) |
AlSiH/VSi4H | –0.160±0.234 (0.118) | 1.59(±1.08) |
), ArticleFig(id=1289525470530220102, tenantId=1146029695717560320, journalId=1287019341717536775, articleId=1289306848016843326, language=CN, label=表2, caption=
135 GPa下布里奇曼石不同取代机制之间的反应能和分配系数
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取代机制的比较 | 反应能/(eV/f. u.) | 分配系数 |
AlSiH/VMg2H | –0.235±0.122 (–0.002) | 1.98(±0.70) |
VSi4H/VMg2H | –0.150±0.115 (–0.251) | 1.54(±0.51) |
AlSiH/VSi4H | –0.160±0.234 (0.118) | 1.59(±1.08) |
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