Large gem diamonds from metallic liquid in Earth’s deep mantle-Reference-Cited by-同舟云学术

Large gem diamonds from metallic liquid in Earth’s deep mantle

Published:2016-12-16 Issue:6318 Volume:354 Page:1403-1405
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Smith Evan M.¹,Shirey Steven B.²,Nestola Fabrizio³,Bullock Emma S.⁴,Wang Jianhua²,Richardson Stephen H.⁵,Wang Wuyi¹

Affiliation:

1. Gemological Institute of America, New York, NY 10036, USA.

2. Department of Terrestrial Magnetism, Carnegie Institution for Science, Washington, DC 20015, USA.

3. Department of Geosciences, University of Padova, Padova 35131, Italy.

4. Geophysical Laboratory, Carnegie Institution for Science, Washington, DC 20015, USA.

5. Department of Geological Sciences, University of Cape Town, Rondebosch 7701, South Africa.

Abstract

Diamonds rock their metal roots Massive diamonds are rare, expensive, and captivating. These diamonds now appear to be distinctive not only in their size but also in their origin. Smith et al. probed mineral inclusions from these very large diamonds and found abundant slivers of iron metal surrounded by reducing gases. This suggests that the large diamonds grew from liquid metal in Earth's mantle. The inclusions also provide direct evidence of a long-suspected metal precipitation reaction that requires a more reducing mantle. Science , this issue p. 1403

Funder

National Science Foundation

European Research Council

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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