A Caltech Library Service

Ice-VII inclusions in diamonds: Evidence for aqueous fluid in Earth’s deep mantle

Tschauner, O. and Huang, S. and Greenberg, E. and Prakapenka, V. B. and Ma, C. and Rossman, G. R. and Shen, A. H. and Zhang, D. and Newville, M. and Lanzirotti, A. and Tait, K. (2018) Ice-VII inclusions in diamonds: Evidence for aqueous fluid in Earth’s deep mantle. Science, 359 (6380). pp. 1136-1139. ISSN 0036-8075.

[img] PDF (Materials and Methods; Tables S1 to S3; Figs. S1 to S4; References) - Supplemental Material
See Usage Policy.


Use this Persistent URL to link to this item:


Water-rich regions in Earth’s deeper mantle are suspected to play a key role in the global water budget and the mobility of heat-generating elements. We show that ice-VII occurs as inclusions in natural diamond and serves as an indicator for such water-rich regions. Ice-VII, the residue of aqueous fluid present during growth of diamond, crystallizes upon ascent of the host diamonds but remains at pressures as high as 24 gigapascals; it is now recognized as a mineral by the International Mineralogical Association. In particular, ice-VII in diamonds points toward fluid-rich locations in the upper transition zone and around the 660-kilometer boundary.

Item Type:Article
Related URLs:
URLURL TypeDescription Materials
Tschauner, O.0000-0003-3364-8906
Greenberg, E.0000-0002-1630-0628
Prakapenka, V. B.0000-0001-9270-2330
Ma, C.0000-0002-1828-7033
Rossman, G. R.0000-0002-4571-6884
Alternate Title:Evidence for aqueous fluid in Earth’s deep mantle
Additional Information:© 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. This is an article distributed under the terms of the Science Journals Default License. 5 July 2017; accepted 19 January 2018. We thank four anonymous reviewers for their helpful comments, and H. A. Bechtel for support at the Advanced Light Source. Funding: This work was supported by U.S. Department of Energy (DOE) awards DESC0005278, DE-FG02-94ER14466, and DE-NA0001974, and by NSF grants EAR-1634415, EAR-1128799, EAR-1322082, EAR-0318518, and DMR-0080065. The Advanced Photon Source, a DOE Office of Science User Facility, is operated by Argonne National Laboratory under contract DE-AC02-06CH11357. The Advanced Light Source is supported through contract DE-AC02-05CH11231. Author contributions: O.T. participated in design, interpretation, data collection, and analysis of the reported results, and in drafting and revising the manuscript; S.H. participated in interpretation of the results and in drafting and revising the manuscript; E.G., V.B.P., C.M., G.R.R., A.H.S., D.Z., and K.T. participated in data collection and revising the manuscript; and M.N. and A.L. participated in data collection. The authors have no competing interests. Availability of data and materials: Additional chemical and crystallographic information about ice-VII is provided as supplementary material. Raw data are deposited at Dryad (doi:10.5061/dryad.7145v). Crystallographic and chemical information on type material ice-VII are deposited with the ICSD database.
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0005278
Department of Energy (DOE)DE-FG02-94ER14466
Department of Energy (DOE)DE-NA0001974
Department of Energy (DOE)DE-AC02-06CH11357
Department of Energy (DOE)DE-AC02-05CH11231
Issue or Number:6380
Record Number:CaltechAUTHORS:20180308-134112407
Persistent URL:
Official Citation:Ice-VII inclusions in diamonds: Evidence for aqueous fluid in Earth’s deep mantle BY O. TSCHAUNER, S. HUANG, E. GREENBERG, V. B. PRAKAPENKA, C. MA, G. R. ROSSMAN, A. H. SHEN, D. ZHANG, M. NEWVILLE, A. LANZIROTTI, K. TAIT SCIENCE 09 Mar 2018: Vol. 359, Issue 6380, pp. 1136-1139 DOI: 10.1126/science.aao3030
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85208
Deposited By: George Porter
Deposited On:08 Mar 2018 21:53
Last Modified:09 Mar 2020 13:19

Repository Staff Only: item control page