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icosahedrite

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Journal Article
Published: 01 May 2011
American Mineralogist (2011) 96 (5-6): 928–931.
...Luca Bindi; Paul J. Steinhardt; Nan Yao; Peter J. Lu Abstract Icosahedrite, ideally Al 63 Cu 24 Fe 13 , is a new mineral from the Khatyrka River, southeastern Chukhotka, Russia. It occurs as dark gray-black anhedral to subhedral grains up to 100 μm across, closely associated with spinel, diopside...
FIGURES
Image
BSE-SEM image of a grain consisting of <span class="search-highlight">icosahedrite</span> (white) and diopside (d...
Published: 01 May 2011
F igure 2. BSE-SEM image of a grain consisting of icosahedrite (white) and diopside (dark gray).
Journal Article
Published: 01 November 2015
American Mineralogist (2015) 100 (11-12): 2412–2418.
...Vincenzo Stagno; Luca Bindi; Changyong Park; Sergey Tkachev; Vitali B. Prakapenka; H.-K. Mao; Russell J. Hemley; Paul J. Steinhardt; Yingwei Fei Abstract Icosahedrite, the first natural quasicrystal with composition Al 63 Cu 24 Fe 13 , was discovered in several grains of the Khatyrka meteorite...
FIGURES | View All (6)
Image
The unmistakable signature of an icosahedral quasicrystal consists of patte...
Published: 01 April 2014
of icosahedrite, match those predicted for a face centered icosahedral quasicrystal, as do the angles that separate the symmetry axes. Panel ( b ) is a single-crystal X-ray diffraction precession photograph down one of the five-fold symmetry axes of the icosahedron collected on a small icosahedrite fragment
Journal Article
Published: 01 March 2017
American Mineralogist (2017) 102 (3): 690–693.
...)—in section 126A of USNM 7908. Hollisterite occurs only as one crystal with stolperite, icosahedrite, and khatyrkite, showing an empirical formula of Al 2.89 Fe 0.77 Cu 0.32 Si 0.02 and a monoclinic C 2/ m structure with a = 15.60 Å, b = 7.94 Å, c = 12.51 Å, b = 108.1°, V = 1472.9 Å 3 , Z = 24. Kryachkoite...
FIGURES
Journal Article
Published: 01 October 2015
American Mineralogist (2015) 100 (10): 2340–2343.
... icosahedrite (Al 63 Cu 24 Fe 13 ), and the first to exhibit the crystallographically forbidden decagonal symmetry. It was found as rare fragments up to ~60 μm across in one of the grains (labeled number 126) of the Khatyrka meteorite, a CV3 carbonaceous chondrite. The meteoritic grain contains evidence...
FIGURES | View All (4)
Journal Article
Published: 01 November 2014
American Mineralogist (2014) 99 (11-12): 2433–2436.
..., icosahedrite, khatyrkite, cupalite, taenite, and Al-bearing taenite. Given the exceedingly small grain size of steinhardtite, it was not possible to determine most of the physical properties for the mineral. A mean of 9 electron microprobe analyses (obtained from two different fragments) gave the formula Al...
FIGURES
Image
Enlarged BSE images showing ( a ) hollisterite with stolperite, <span class="search-highlight">icosahedrit</span>...
Published: 01 March 2017
Figure 2 Enlarged BSE images showing ( a ) hollisterite with stolperite, icosahedrite, and khatyrkite; ( b ) kryachkoite in contact with khatyrkite and aluminum, ( c ) stolperite and kryachkoite with khatyrkite; and ( d ) stolperite in khatyrkite.
Journal Article
Published: 01 June 2021
American Mineralogist (2021) 106 (6): 1031–1032.
... synthesis, natural analogues were finally discovered. How are they formed in rocks? What is the importance of natural quasicrystals in the fields of Earth and planetary sciences? Luca Bindi, who first discovered natural quasicrystals, icosahedrite and decagonite, answers these questions in his book...
FIGURES
Journal Article
Published: 01 April 2014
Mineralogical Magazine (2014) 78 (2): 467–482.
... of icosahedrite, match those predicted for a face centered icosahedral quasicrystal, as do the angles that separate the symmetry axes. Panel ( b ) is a single-crystal X-ray diffraction precession photograph down one of the five-fold symmetry axes of the icosahedron collected on a small icosahedrite fragment...
FIGURES | View All (16)
Image
BSE-SEM image of a thin polished slice of the “khatyrkite” sample, with dif...
Published: 01 May 2011
F igure 1. BSE-SEM image of a thin polished slice of the “khatyrkite” sample, with different minerals marked as follows: k = khatyrkite, (CuAl 2 ); c = cupalite (CuAl); u = unknown mineral with composition AlCuFe; i = icosahedrite.
Journal Article
Published: 01 August 2020
American Mineralogist (2020) 105 (8): 1121–1125.
...) have recently reported a micro-meteorite recovered from the Nubian Desert in Sudan with the same assemblage of aluminum, iron, and copper as icosahedrite and with a morphology that is remarkably similar to Khatyrka. This example includes not only metallic aluminum but also aluminum-copper alloys...
Image
The fivefold ( a ), threefold ( b ), and twofold ( c ) electron diffraction...
Published: 01 May 2011
F igure 3. The fivefold ( a ), threefold ( b ), and twofold ( c ) electron diffraction patterns for icosahedrite collected in the TEM. The patterns correspond perfectly, up to experimental resolution, with the fivefold, threefold, and twofold patterns predicted for a face-centered icosahedral
Image
Different views of the original khatyrkite-bearing sample belonging to the ...
Published: 01 April 2014
and olivine. The dark material consists predominantly of khatyrkite (CuAl 2 ) and cupalite (CuAl), but also includes granules of icosahedrite with composition Al 63 Cu 24 Fe 13 .
Published: 01 January 2017
DOI: 10.1180/EMU-notes.19.1
EISBN: 9780903056601
... indicate the different subsystems and the different subcells (see Evain et al. , 2006c for explanation). Broken lines indicate the two subsystem interactions (symbols as in Fig. 1.21 ). Fig. 23. The five-fold (a), two-fold (c) and three-fold (d) electron diffraction patterns for icosahedrite...
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Journal Article
Published: 01 December 2010
Mineralogical Magazine (2010) 74 (6): 941–942.
..., M.S., Favreau, G., Spratt, J. and Dini, M. (2010) Bariopharmacoalumite, IMA 2010-041. CNMNC Newsletter, December 2010, page 941; Mineralogical Magazine , 74 , 941–942 Icosahedrite Al 63 Cu 24 Fe 13 Iomrautvaam Massif, Listvenitovyi River, Khatyrka ultrabasic zone, Koryak Upland...
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Representative angle-dispersive (wavelength of 0.4133 Å) X-ray diffraction ...
Published: 01 November 2015
Figure 5 Representative angle-dispersive (wavelength of 0.4133 Å) X-ray diffraction patterns for synthetic icosahedrite as function of temperature at ~42 GPa. Diffraction patterns were collected with 15 s exposure time after keeping the sample at approximately constant T for 180 s. Peaks
Journal Article
Published: 30 December 2024
American Mineralogist (2024)
... et al. 2018). They are: icosahedrite, Al63Cu24Fe13 (Bindi et al. 2009, 2011), with 53 icosahedral symmetry, and decagonite, Al71Ni24Fe5 (Bindi et al. 2015a, 2015b), with decagonal 54 symmetry. The chemical compositions of both natural quasicrystals closely matched those of QC 55 phases previously...
Journal Article
Published: 01 April 2014
Mineralogical Magazine (2014) 78 (2): i–iii.
... natural quasicrystal, icosahedrite (Al 63 Cu 24 Fe 13 ) in Russia and explain the history behind natural and synthetic quasicrystals. The Guest Editor, Stuart Mills thanks Andrew Christy, Pete Williams, Kevin Murphy, Helen Kerbey and the other Associate Editors of Mineralogical Magazine...
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Journal Article
Published: 01 February 2013
American Mineralogist (2013) 98 (2-3): 470–477.
... mineralogy and the most advanced fields of crystallography. In the most recent years, he covered the field of quasicrystals. In this context of investigations, his recent discovery of the first natural quasicrystal, icosahedrite ( Bindi et al. 2009 , 2011 , 2012 ; Bindi and Steinhardt 2012...
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