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Journal Article

Chenmingite, FeCr 2 O 4 in the CaFe 2 O 4 -type structure, a shock-induced, high-pressure mineral in the Tissint martian meteorite Available to Purchase

Chi Ma, Oliver Tschauner, John R. Beckett, Yang Liu, Eran Greenberg, Vitali B. Prakapenka
Published: 01 October 2019
American Mineralogist (2019) 104 (10): 1521–1525.
DOI: https://doi.org/10.2138/am-2019-6999
...Chi Ma; Oliver Tschauner; John R. Beckett; Yang Liu; Eran Greenberg; Vitali B. Prakapenka Abstract Chenmingite (FeCr 2 O 4 ; IMA 2017-036) is a high-pressure mineral, occurring as micrometer- to submicrometer-sized lamellae within precursor chromite grains along with xieite and Fe,Cr-rich...
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Nitrides and carbonitrides from the lowermost mantle and their importance in the search for Earth's “lost” nitrogen Available to Purchase

Felix Kaminsky, Richard Wirth
Published: 01 August 2017
American Mineralogist (2017) 102 (8): 1667–1676.
DOI: https://doi.org/10.2138/am-2017-6101
...-rich xieite. Our identified finds demonstrate a wide field of natural compositions from pure carbide to pure nitride, with multiple stoichiometries from M 5 (C,N) 3 to M 23 (C,N) 6 and with M/(C,N) from 1.65 to 3.98. We conclude that the studied iron nitrides and carbonitrides were formed...
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View PDF for article title, Nitrides and carbonitrides from the lowermost mantle and their importance in the search for Earth's “lost” nitrogen
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(a) Backscatter electron (BSE) image showing the chenmingite-bearing chromite grains next to shock melt pockets in Tissint. (b and c) Enlarged BSE images of areas in panel a revealing chenmingite in two chromite grains with xieite and Fe,Cr-rich ulvöspinel. (d) Enlarged BSE image of the area in panel c showing chenmingite lamellae in chromite.

( a ) Backscatter electron (BSE) image showing the chenmingite-bearing chro... Available to Purchase

Published: 01 October 2019
Figure 1. ( a ) Backscatter electron (BSE) image showing the chenmingite-bearing chromite grains next to shock melt pockets in Tissint. ( b and c ) Enlarged BSE images of areas in panel a revealing chenmingite in two chromite grains with xieite and Fe,Cr-rich ulvöspinel. ( d ) Enlarged BSE
Image
Phase diagram of FeCr2O4 based on Ishii et al. (2014). Sp = spinel-FeCr2O4 (chromite); mLd = modified ludwigite type Fe2Cr2O5; Es = eskolaite; CF = CF-structured FeCr2O4 (chenmingite); CT = CT-structured FeCr2O4 (xieite).

Phase diagram of FeCr 2 O 4 based on Ishii et al. (2014) . Sp = spinel-Fe... Available to Purchase

Published: 01 October 2019
Figure 3. Phase diagram of FeCr 2 O 4 based on Ishii et al. (2014) . Sp = spinel-FeCr 2 O 4 (chromite); mLd = modified ludwigite type Fe 2 Cr 2 O 5 ; Es = eskolaite; CF = CF-structured FeCr 2 O 4 (chenmingite); CT = CT-structured FeCr 2 O 4 (xieite).
Journal Article

A MICROINCLUSION OF LOWER-MANTLE ROCK AND OTHER MINERAL AND NITROGEN LOWER-MANTLE INCLUSIONS IN A DIAMOND Available to Purchase

Felix V. Kaminsky, Richard Wirth, Anja Schreiber
Published: 22 June 2015
The Canadian Mineralogist (2015) 53 (1): 83–104.
DOI: https://doi.org/10.3749/canmin.1400070
..., and termed ‘xieite’ ( Chen et al . 2008 ). Chemically, xieite is analogous to chromite and has the ideal formula FeCr 2 O 4 . It has an orthorhombic structure and lattice parameters of a 0 = 0.9462 nm; b 0 = 0.9562 nm; c 0 = 0.2916 nm, which are similar to the parameters of the synthetic...
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View PDF for article title, A MICROINCLUSION OF LOWER-MANTLE ROCK AND OTHER MINERAL AND NITROGEN LOWER-MANTLE INCLUSIONS IN A DIAMOND
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Representations of high-pressure transition metal oxide structures. (a) Xieite, the FeCr2O4 post-spinel phase isotypic to CaTi2O4 (Chen et al. 2003). (b) Chenmingite, the FeCr2O4 postpinel phase isotypic to harmunite (CaFe2O4) (Ma et al. 2018). (c) Feiite, Fe2(FeTi)2O5 (Ma et al. 2018). (d) Fe(Fe,Ti)3O5 ludwigite, a synthetic high-pressure phase that occurs in the Fe-Cr-oxide and the Fe-Ti-oxide systems (Ishii et al. 2014, 2015). (Color online.)

Representations of high-pressure transition metal oxide structures. ( a ) X... Available to Purchase

Published: 01 December 2019
Figure 9. Representations of high-pressure transition metal oxide structures. ( a ) Xieite, the FeCr 2 O 4 post-spinel phase isotypic to CaTi 2 O 4 ( Chen et al. 2003 ). ( b ) Chenmingite, the FeCr 2 O 4 postpinel phase isotypic to harmunite (CaFe 2 O 4 ) ( Ma et al. 2018 ). ( c ) Feiite, Fe 2
Image
Relations of effective radii and structure fields of AB2O4 oxides (adapted from Glasser and Glasser 1963). The spinels magnesioferrite, chromite, magnesiochromite, and ulvospinel are indicated by half-filled diamonds. The corresponding high-pressure minerals maohokite (Chen et al. 2017), xieite (Chen et al. 2003), chenmingite (Ma et al. 2018), and tschaunerite (Ma et al. 2018) are in the post-spinal field, which at ambient pressure is occupied by phases with rA >1.05 Å. It is noteworthy that the transition from spinels to post-spinel AB2O4 is not direct but through a regime of partial decomposition into sesquioxides and ludwigite-type oxides (Nishio-Hamane et al. 2012; Ishii et al. 2014, 2015; Akaogi et al. 2018).

Relations of effective radii and structure fields of AB 2 O 4 oxides (adap... Available to Purchase

Published: 01 December 2019
. 2017 ), xieite ( Chen et al. 2003 ), chenmingite ( Ma et al. 2018 ), and tschaunerite ( Ma et al. 2018 ) are in the post-spinal field, which at ambient pressure is occupied by phases with r A >1.05 Å. It is noteworthy that the transition from spinels to post-spinel AB 2 O 4 is not direct
Journal Article

Shenzhuangite, NiFeS 2 , the Ni-analogue of chalcopyrite from the Suizhou L6 chondrite Available to Purchase

Luca Bindi, Xiande Xie
Published: 01 January 2018
European Journal of Mineralogy (2018) 30 (1): 165–169.
DOI: https://doi.org/10.1127/ejm/2017/0029-2684
... high-pressure polymorphs including ringwoodite, majorite, majorite-pyrope garnet, akimotoite, magnesiowüstite, lingunite, tuite, xieite ( Xie et al. , 2001 , 2003 , 2005 , 2011 ; Chen et al. , 2003a and b , 2004 , 2008 ; Chen & Xie, 2015 ), and the recently approved hemleyite, FeSiO 3...
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Journal Article

Wernerkrauseite, CaFe 3+ 2 Mn 4+ O 6 : the first nonstoichiometric post-spinel mineral, from Bellerberg volcano, Eifel, Germany Available to Purchase

Evgeny V. Galuskin, Biljana Krüger, Hannes Krüger, Günter Blass, Remo Widmer, Irina O. Galuskina
Published: 01 May 2016
European Journal of Mineralogy (2016) 28 (2): 485–493.
DOI: https://doi.org/10.1127/ejm/2016/0028-2509
... 4 are known, where A = Li, Na, Mg, Ca, Sr, Ba, La, Eu, and B = Ti, V, Cr, Mn, Fe, Ru, Rh, Al, Ga, In, Tl, Sc, Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Lu ( Shizuya et al ., 2007 ). So far, only three minerals with post-spinel structure have been described: 1) xieite FeCr 2 O 4 [ Bbmm...
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View PDF for article title, Wernerkrauseite, CaFe 3+ 2 Mn 4+ O 6 : the first nonstoichiometric post-spinel mineral, from Bellerberg volcano, Eifel, Germany
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Journal Article

Guite, the spinel-structured Co 2+ Co 3+ 2 O 4 , a new mineral from the Sicomines copper–cobalt mine, Democratic Republic of Congo Open Access

Zhilan Lei, Xinghai Chen, Jianxiong Wang, Yingchun Huang, Fangfang Du, Zier Yan
Published: 21 March 2022
Mineralogical Magazine (2022) 86 (2): 346–353.
DOI: https://doi.org/10.1180/mgm.2022.27
... 8.437 4.93 2.034 1.997 14 Chromite Fe 2+ Cr 2 O 4 Fd $\bar{3}$ m 8.383 5.05 1.995 1.997 12.1 15 a =9.715, b =2.870, c =9.490 5.27 16 Chenmingite* Fe 2+ Cr 2 O 4 Pnma Xieite* Fe 2+ Cr 2 O 4 Bbmm a =9.462, b =9.562, c =2.916 5.34 1.997/ 2.205...
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View PDF for article title, Guite, the spinel-structured Co 2+ Co 3+ 2 O 4 , a new mineral from the Sicomines copper–cobalt mine, Democratic Republic of Congo
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Journal Article

High-pressure phase transitions in FeCr 2 O 4 and structure analysis of new post-spinel FeCr 2 O 4 and Fe 2 Cr 2 O 5 phases with meteoritical and petrological implications Available to Purchase

Takayuki Ishii, Hiroshi Kojitani, Shoichi Tsukamoto, Kiyoshi Fujino, Daisuke Mori, Yoshiyuki Inaguma, Noriyoshi Tsujino, Takashi Yoshino, Daisuke Yamazaki, Yuji Higo, Kenichi Funakoshi, Masaki Akaogi
Published: 01 August 2014
American Mineralogist (2014) 99 (8-9): 1788–1797.
DOI: https://doi.org/10.2138/am.2014.4736
... of Sciences , 100 , 14651 – 14654 , doi: 10.1073/pnas.2136599100 . Chen M. Shu J. Mao H.K. ( 2008 ) Xieite, a new mineral of high-pressure FeCr 2 O 4 polymorph . Chinese Science Bulletin , 53 , 3341 – 3345 , doi: 10.1007/s11434-008-0407-1 . Decker B.F. Kasper J.S...
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View PDF for article title, High-pressure phase transitions in FeCr 2 O 4 and structure analysis of new post-spinel FeCr 2 O 4 and Fe 2 Cr 2 O 5 phases with meteoritical and petrological implications
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Journal Article

High-pressure minerals Available to Purchase

Oliver Tschauner
Published: 01 December 2019
American Mineralogist (2019) 104 (12): 1701–1731.
DOI: https://doi.org/10.2138/am-2019-6594
...Figure 9. Representations of high-pressure transition metal oxide structures. ( a ) Xieite, the FeCr 2 O 4 post-spinel phase isotypic to CaTi 2 O 4 ( Chen et al. 2003 ). ( b ) Chenmingite, the FeCr 2 O 4 postpinel phase isotypic to harmunite (CaFe 2 O 4 ) ( Ma et al. 2018 ). ( c ) Feiite, Fe 2...
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Journal Article

New Mineral Names , Free

Dmitriy I. Belakovskiy, Yulia Uvarova, Fernando Cámara
Published: 01 December 2020
American Mineralogist (2020) 105 (12): 1920–1925.
DOI: https://doi.org/10.2138/am-2020-NMN1051227
... , lingunite, tuite, xieite, and (Mg,Fe)SiO 3 -glass (probably a vitrified mineral of perovskite structure). Hemleyite found as one subhedral crystal ~ 7 × 6 × 5 μm coexisting with forsterite, clinoenstatite and Fe-bearing pyroxene with a composition nearly identical to that of hemleyite. The physical...
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High P-T phase relations of Al-bearing magnetite: Post-spinel phases as indicators for P-T conditions of formation of natural samples Available to Purchase

Laura Uenver-Thiele, Alan B. Woodland, Nobuyoshi Miyajima, Tiziana Boffa Ballaran, Edith Alig, Lothar Fink
Published: 01 June 2024
American Mineralogist (2024) 109 (6): 1062–1073.
DOI: https://doi.org/10.2138/am-2023-8948
... with the CaFe 2 O 4 -type [CF; named “Chenmingite”, IMA 2017-036 ( Ma and Tschauner 2017 )] and CaTi 2 O 4 -type [CT; named “Xieite”, IMA 2007-056 ( Chen et al. 2008 )] structures preserved in the shocked Suizhou meteorite. Chen et al. (2003a , 2003b ) demonstrated that these two hp-polymorphs must have...
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View PDF for article title, High P-T phase relations of Al-bearing magnetite: Post-spinel phases as indicators for P-T conditions of formation of natural samples
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Harmunite CaFe 2 O 4 : A new mineral from the Jabel Harmun, West Bank, Palestinian Autonomy, Israel Available to Purchase

Irina O. Galuskina, Yevgeny Vapnik, Biljana Lazic, Thomas Armbruster, Mikhail Murashko, Evgeny V. Galuskin
Published: 01 May 2014
American Mineralogist (2014) 99 (5-6): 965–975.
DOI: https://doi.org/10.2138/am.2014.4563
... are known: xieite FeCr 2 O 4 [ Bbmm , a = 9.462(6), b = 9.562(9), c = 2.916(1) Å] = high-pressure polymorph of chromite ( Chen et al. 2008 ), and marokite CaMn 2 O 4 [ Pmab or P 21 ab , a = 9.71(2), b = 10.03(2), c = 3.162(5) Å] = low-pressure phase ( Gaudefroy et al. 1963 ; Lepicard...
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View PDF for article title, Harmunite CaFe 2 O 4 : A new mineral from the Jabel Harmun, West Bank, Palestinian Autonomy, Israel
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Discovery of asimowite, the Fe-analog of wadsleyite, in shock-melted silicate droplets of the Suizhou L6 and the Quebrada Chimborazo 001 CB3.0 chondrites Available to Purchase

Luca Bindi, Frank E. Brenker, Fabrizio Nestola, Tamara E. Koch, David J. Prior, Kat Lilly, Alexander N. Krot, Martin Bizzarro, Xiande Xie
Published: 01 May 2019
American Mineralogist (2019) 104 (5): 775–778.
DOI: https://doi.org/10.2138/am-2019-6960
... ringwoodite, majorite, majorite-pyrope garnet, akimotoite, hemleyite, magnesiowüstite, lingunite, tuite, and xieite ( Xie et al. 2011 and references therein; Chen and Xie 2015 and references therein; Bindi et al. 2017 ). In addition, Chen et al. (2004) reported (Mg,Fe)SiO 3 glass in the shock veins...
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View PDF for article title, Discovery of asimowite, the Fe-analog of wadsleyite, in shock-melted silicate droplets of the Suizhou L6 and the Quebrada Chimborazo 001 CB3.0 chondrites
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Dating phosphates of the strongly shocked Suizhou chondrite Available to Purchase

Shaolin Li, Weibiao Hsu
Published: 01 November 2018
American Mineralogist (2018) 103 (11): 1789–1799.
DOI: https://doi.org/10.2138/am-2018-6582
..., wangdaodeite, xieite, and a CaFe 2 O 4 -polymorph of chromite and tuite (Xie and Chen 2016 and references therein). The assemblage of majoritic garnet + ringwoodite + magnesiowüstite in the SMVs suggests crystallization temperature of about 1800–2000 °C under pressure of 20–22 GPa ( Xie et al. 2001...
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Chemical composition and crystal structure of merrillite from the Suizhou meteorite Available to Purchase

Xiande Xie, Hexiong Yang, Xiangping Gu, Robert T. Downs
Published: 01 November 2015
American Mineralogist (2015) 100 (11-12): 2753–2756.
DOI: https://doi.org/10.2138/am-2015-5488
...., ringwoodite, majorite, akimotoite, vitrified perovskite, lingunite, tuite, xieite, CF-phase, magnesiowüstite, majorite-pyrope garnet solid solution), for which the shock-produced pressure and temperature of 24 GPa and 1900~2000 °C is inferred ( Xie et al. 2011 ). Merrillite in the Suizhou meteorite...
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View PDF for article title, Chemical composition and crystal structure of merrillite from the Suizhou meteorite
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New Mineral Names, Free

Dmitriy I. Belakovskiy, Olivier C. Gagné
Published: 01 October 2018
American Mineralogist (2018) 103 (10): 1711–1715.
DOI: https://doi.org/10.2138/am-2018-NMN1031020
..., xieite, hemleyite, and a (Mg,Fe)SiO 3 -glass—possibly a vitrified perovskite. Shenzhuangite found in a single polished section as unhedral grains up to 60 μm in close association with taenite. Other associated minerals are forsterite, pyroxene, plagioclase glass (maskelynite), and troilite. Color, luster...
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Journal Article

An evolutionary system of mineralogy, Part IV: Planetesimal differentiation and impact mineralization (4566 to 4560 Ma) Available to Purchase

Shaunna M. Morrison, Robert M. Hazen
Published: 01 May 2021
American Mineralogist (2021) 106 (5): 730–761.
DOI: https://doi.org/10.2138/am-2021-7632
... liuite From the shocked Tissint martian meteorite 19 Chenmingite (FeCr 2 O 4 ) Impact chenmingite One occurrence in the Suizhou (L6) chondrite 20,21 Xieite (FeCr 2 O 4 ) Impact xieite One occurrence in the Suizhou (L6) chondrite 22 Tschaunerite (Fe 2 TiO 4 ) Impact tschaunerite...
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View PDF for article title, An evolutionary system of mineralogy, Part IV: Planetesimal differentiation and impact mineralization (4566 to 4560 Ma)
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