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NWA 8647

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Image
Mosaic backscattered electron image of the section of NWA 8647. The left side shown in this image was largely melted and then recrystallized. By contrast, the right side was unmelted but contains shock-induced melt veins.

Mosaic backscattered electron image of the section of NWA 8647. The left si... Available to Purchase

Published: 01 November 2020
Figure 1. Mosaic backscattered electron image of the section of NWA 8647. The left side shown in this image was largely melted and then recrystallized. By contrast, the right side was unmelted but contains shock-induced melt veins.
Image
Fe and Mn concentrations of pyroxenes in NWA 8647. The trend lines of HED and Moon are adopted from Papike et al. (2003). The symbols in this figure are same as those in Figure 2. (Color online.)

Fe and Mn concentrations of pyroxenes in NWA 8647. The trend lines of HED a... Available to Purchase

Published: 01 November 2020
Figure 3. Fe and Mn concentrations of pyroxenes in NWA 8647. The trend lines of HED and Moon are adopted from Papike et al. (2003) . The symbols in this figure are same as those in Figure 2 . (Color online.)
Image
Typical area from the unmelted region in NWA 8647 showing the exsolution texture of pyroxene. Opx = orthopyroxene; Aug = augite; Pl = plagioclase.

Typical area from the unmelted region in NWA 8647 showing the exsolution te... Available to Purchase

Published: 01 November 2020
Figure 4. Typical area from the unmelted region in NWA 8647 showing the exsolution texture of pyroxene. Opx = orthopyroxene; Aug = augite; Pl = plagioclase.
Journal Article

A new occurrence of corundum in eucrite and its significance Available to Purchase

Jie-Ya Li, Ai-Cheng Zhang, Naoya Sakamoto, Hisayoshi Yurimoto, Li-Xin Gu
Published: 01 November 2020
American Mineralogist (2020) 105 (11): 1656–1661.
DOI: https://doi.org/10.2138/am-2020-7361
...Figure 1. Mosaic backscattered electron image of the section of NWA 8647. The left side shown in this image was largely melted and then recrystallized. By contrast, the right side was unmelted but contains shock-induced melt veins. ...
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Image
(a) Backscattered electron image of relict lithic fragment in the melted region of NWA 8647. The white box indicates the location of b. (b) Zoomed-in image of a typical region from the upper part of a showing polycrystalline pyroxene. Note that plagioclase grains in b have a high length/width ratio, indicating rapid crystallization from melt. Px = pyroxene; Pl = plagioclase.

( a ) Backscattered electron image of relict lithic fragment in the melted ... Available to Purchase

Published: 01 November 2020
Figure 8. ( a ) Backscattered electron image of relict lithic fragment in the melted region of NWA 8647. The white box indicates the location of b . ( b ) Zoomed-in image of a typical region from the upper part of a showing polycrystalline pyroxene. Note that plagioclase grains in b have
Image
Pyroxene quadrilateral diagram showing the compositional variation of pyroxenes in NWA 8647. Blue circles represent compositions of the coarse-grained pyroxenes in the unmelted portion. Green diamonds represent compositions of the polycrystalline pyroxenes in the lithic fragment shown in Figure 8. Red squares represent compositions of the pyroxenes in the fragment hosting the corundum grain. Yellow squares represent compositions of fine-grained pyroxenes in the melted and recrystallized region. (Color online.)

Pyroxene quadrilateral diagram showing the compositional variation of pyrox... Available to Purchase

Published: 01 November 2020
Figure 2. Pyroxene quadrilateral diagram showing the compositional variation of pyroxenes in NWA 8647. Blue circles represent compositions of the coarse-grained pyroxenes in the unmelted portion. Green diamonds represent compositions of the polycrystalline pyroxenes in the lithic fragment shown
Journal Article

The high-pressure, vacancy-stabilized component in clinopyroxenes Available to Purchase

Ioannis Baziotis, Chi Ma, Stephan Klemme, Jasper Berndt, Oliver Tschauner, Paul D. Asimow
Published: 04 February 2025
American Mineralogist (2025)
DOI: https://doi.org/10.2138/am-2024-9609
... jadeite from Ozerki, 114 we compiled X-ray refinement data on vacancy-rich pyroxenes from the literature. We 115 used data on tissintite from the martian meteorite Tissint (Ma et al. 2015), the lunar 116 meteorite NWA 2995 (Zhang et al. 2021), the eucrite NWA 8647 (Zhang et al. 2022), 117 and experimental...
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Journal Article

Evidence of the anthropogenic origin of the ‘Carmel sapphire’ with enigmatic super-reduced minerals Available to Purchase

Evgeny Galuskin, Irina Galuskina
Published: 19 April 2023
Mineralogical Magazine (2023) 87 (4): 619–630.
DOI: https://doi.org/10.1180/mgm.2023.25
.... ( 2023 ) Discovery of terrestrial andreyivanovite, FeCrP, and the effect of Cr and V substitution in barringerite-allabogdanite low-pressure transition . American Mineralogist , doi: 10.2138/am-2022-8647 Griffin W.L...
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Journal Article

Discovery of terrestrial andreyivanovite, FeCrP, and the effect of Cr and V substitution on the low-pressure barringerite-allabogdanite transition Available to Purchase

Evgeny V. Galuskin, Joachim Kusz, Irina O. Galuskina, Maria Książek, Yevgeny Vapnik, Grzegorz Zieliński
Published: 01 August 2023
American Mineralogist (2023) 108 (8): 1506–1515.
DOI: https://doi.org/10.2138/am-2022-8647
... Desert, Israel—natural analogue of the SFCA phase . European Journal of Mineralogy , 29 , 101 – 116 , https://doi.org/10.1127/ejm/2017/0029-2589 . Greshake , A. ( 2014 ) Strongly hydrated microclast in the Rumuruti chondrite NWA 6828: Implications for the distribution of hydrous material...
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View PDF for article title, Discovery of terrestrial andreyivanovite, FeCrP, and the effect of Cr and V substitution on the low-pressure barringerite-allabogdanite transition
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