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Micro- and nano-inclusions in a superdeep diamond from São Luiz, Brazil. / Kagi, Hiroyuki; Zedgenizov, Dmitry A.; Ohfuji, Hiroaki et al.

In: Geochemistry International, Vol. 54, No. 10, 01.10.2016, p. 834-838.

Research output: Contribution to journal › Article › peer-review

Harvard

Kagi, H, Zedgenizov, DA, Ohfuji, H & Ishibashi, H 2016, 'Micro- and nano-inclusions in a superdeep diamond from São Luiz, Brazil', Geochemistry International, vol. 54, no. 10, pp. 834-838. https://doi.org/10.1134/S0016702916100062

APA

Kagi, H., Zedgenizov, D. A., Ohfuji, H., & Ishibashi, H. (2016). Micro- and nano-inclusions in a superdeep diamond from São Luiz, Brazil. Geochemistry International, 54(10), 834-838. https://doi.org/10.1134/S0016702916100062

Vancouver

Kagi H, Zedgenizov DA, Ohfuji H, Ishibashi H. Micro- and nano-inclusions in a superdeep diamond from São Luiz, Brazil. Geochemistry International. 2016 Oct 1;54(10):834-838. doi: 10.1134/S0016702916100062

Author

Kagi, Hiroyuki ; Zedgenizov, Dmitry A. ; Ohfuji, Hiroaki et al. / Micro- and nano-inclusions in a superdeep diamond from São Luiz, Brazil. In: Geochemistry International. 2016 ; Vol. 54, No. 10. pp. 834-838.

BibTeX

@article{0a7623d21ae94e3a831e118089b113e3,
title = "Micro- and nano-inclusions in a superdeep diamond from S{\~a}o Luiz, Brazil",
abstract = "We report cloudy micro- and nano-inclusions in a superdeep diamond from S{\~a}o-Luiz, Brazil which contains inclusions of ferropericlase (Mg, Fe)O and former bridgmanite (Mg, Fe)SiO3 and ringwoodite (Mg, Fe)2SiO4. Field emission-SEM and TEM observations showed that the cloudy inclusions were composed of euhedral micro-inclusions with grain sizes ranging from tens nanometers to submicrometers. Infrared absorption spectra of the cloudy inclusions showed that water, carbonate, and silicates were not major components of these micro- and nano-inclusions and suggested that the main constituent of the inclusions was infrared-inactive. Some inclusions were suggested to contain material with lower atomic numbers than that of carbon. Mineral phase of nano- and micro-inclusions is unclear at present. Microbeam X-ray fluorescence analysis clarified that the micro-inclusions contained transition metals (Cr, Mn, Fe, Co, Ni, Cu, Zn) possibly as metallic or sulfide phases. The cloudy inclusions provide an important information on the growth environment of superdeep diamonds in the transition zone or the lower mantle.",
keywords = "lower mantle, micro-inclusion, nano-inclusion, superdeep diamond",
author = "Hiroyuki Kagi and Zedgenizov, {Dmitry A.} and Hiroaki Ohfuji and Hidemi Ishibashi",
year = "2016",
month = oct,
day = "1",
doi = "10.1134/S0016702916100062",
language = "English",
volume = "54",
pages = "834--838",
journal = "Geochemistry International",
issn = "0016-7029",
publisher = "PLEIADES PUBLISHING INC",
number = "10",

}

RIS

TY - JOUR

T1 - Micro- and nano-inclusions in a superdeep diamond from São Luiz, Brazil

AU - Kagi, Hiroyuki

AU - Zedgenizov, Dmitry A.

AU - Ohfuji, Hiroaki

AU - Ishibashi, Hidemi

PY - 2016/10/1

Y1 - 2016/10/1

N2 - We report cloudy micro- and nano-inclusions in a superdeep diamond from São-Luiz, Brazil which contains inclusions of ferropericlase (Mg, Fe)O and former bridgmanite (Mg, Fe)SiO3 and ringwoodite (Mg, Fe)2SiO4. Field emission-SEM and TEM observations showed that the cloudy inclusions were composed of euhedral micro-inclusions with grain sizes ranging from tens nanometers to submicrometers. Infrared absorption spectra of the cloudy inclusions showed that water, carbonate, and silicates were not major components of these micro- and nano-inclusions and suggested that the main constituent of the inclusions was infrared-inactive. Some inclusions were suggested to contain material with lower atomic numbers than that of carbon. Mineral phase of nano- and micro-inclusions is unclear at present. Microbeam X-ray fluorescence analysis clarified that the micro-inclusions contained transition metals (Cr, Mn, Fe, Co, Ni, Cu, Zn) possibly as metallic or sulfide phases. The cloudy inclusions provide an important information on the growth environment of superdeep diamonds in the transition zone or the lower mantle.

AB - We report cloudy micro- and nano-inclusions in a superdeep diamond from São-Luiz, Brazil which contains inclusions of ferropericlase (Mg, Fe)O and former bridgmanite (Mg, Fe)SiO3 and ringwoodite (Mg, Fe)2SiO4. Field emission-SEM and TEM observations showed that the cloudy inclusions were composed of euhedral micro-inclusions with grain sizes ranging from tens nanometers to submicrometers. Infrared absorption spectra of the cloudy inclusions showed that water, carbonate, and silicates were not major components of these micro- and nano-inclusions and suggested that the main constituent of the inclusions was infrared-inactive. Some inclusions were suggested to contain material with lower atomic numbers than that of carbon. Mineral phase of nano- and micro-inclusions is unclear at present. Microbeam X-ray fluorescence analysis clarified that the micro-inclusions contained transition metals (Cr, Mn, Fe, Co, Ni, Cu, Zn) possibly as metallic or sulfide phases. The cloudy inclusions provide an important information on the growth environment of superdeep diamonds in the transition zone or the lower mantle.

KW - lower mantle

KW - micro-inclusion

KW - nano-inclusion

KW - superdeep diamond

UR - http://www.scopus.com/inward/record.url?scp=84990940868&partnerID=8YFLogxK

U2 - 10.1134/S0016702916100062

DO - 10.1134/S0016702916100062

M3 - Article

AN - SCOPUS:84990940868

VL - 54

SP - 834

EP - 838

JO - Geochemistry International

JF - Geochemistry International

SN - 0016-7029

IS - 10

ER -

ID: 25481986