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Natural quasicrystal with decagonal symmetry
- Source :
- Nature Publishing Group, Scientific Reports
- Publication Year :
- 2015
- Publisher :
- Springer Science and Business Media LLC, 2015.
-
Abstract
- We report the first occurrence of a natural quasicrystal with decagonal symmetry. The quasicrystal, with composition Al71Ni24Fe5, was discovered in the Khatyrka meteorite, a recently described CV3 carbonaceous chondrite. Icosahedrite, Al63Cu24Fe13, the first natural quasicrystal to be identified, was found in the same meteorite. The new quasicrystal was found associated with steinhardtite (Al38Ni32Fe30), Fe-poor steinhardtite (Al50Ni40Fe10), Al-bearing trevorite (NiFe2O4) and Al-bearing taenite (FeNi). Laboratory studies of decagonal Al71Ni24Fe5 have shown that it is stable over a narrow range of temperatures, 1120 K to 1200 K at standard pressure, providing support for our earlier conclusion that the Khatyrka meteorite reached heterogeneous high temperatures [1100 < T(K) ≤ 1500] and then rapidly cooled after being heated during an impact-induced shock that occurred in outer space 4.5 Gya. The occurrences of metallic Al alloyed with Cu, Ni and Fe raises new questions regarding conditions that can be achieved in the early solar nebula.
- Subjects :
- Icosahedrite
Multidisciplinary
Materials science
Condensed matter physics
Mineralogy
Quasicrystal
02 engineering and technology
engineering.material
021001 nanoscience & nanotechnology
01 natural sciences
Article
Taenite
Trevorite
Metal
Meteorite
13. Climate action
visual_art
Carbonaceous chondrite
0103 physical sciences
visual_art.visual_art_medium
engineering
Formation and evolution of the Solar System
010306 general physics
0210 nano-technology
Subjects
Details
- ISSN :
- 20452322
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....f1495c1e7a2c10295aeff67d519fc816