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Decagonite (Decagonit)

Collectors Summary

Color grau, schwarz
Lustre Metallglanz
Crystal System decagonal, P105/mmc

Additional information / Summary

Ein Quasikristall mit decagonaler Symmetrie vom Khatyrka CV3 Kohlenstoffreichem Chondrit. Es ist der zweite natürliche Quasikristall neben Ikosaedrit und der erste Kristall der die kristallographisch verbotene decagonale Symmetrie aufweist.

Chemism

Chemical formula

Al71Ni24Fe5

Chemical composition

Aluminium, Eisen, Nickel

Unit weight: 3603.5572922 u; Number of atoms in the formula: 100

Info

Empirical formula:

Al71Ni24Fe5

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Aluminium

Al

53.16

71

71.00

26.9815382

1,915.6892122

Iron

Fe

7.75

5

5.00

55.8452000

279.2260000

Nickel

Ni

39.09

24

24.00

58.6934200

1,408.6420800

Strunz 9th edition incl. updates

1

1: Elemente (Metalle, intermetallische Legierungen, Metalloide u. Nichtmetalle, Carbide, Silicide, Nitride u. Phosphide)
1:
1:

IMA status

anerkannt - CNMNC Newsletter 25, Juni 2015

Mineral status

anerkanntes Mineral

Optical Properties

Color

grau, schwarz

Lustre

Metallglanz

Crystallography

Crystal System

decagonal

Space Group

P105/mmc

Crystal structure

bekanntes synthetisches Analog

X-Ray Powder Diffraction

2.024(100), 3.765(50), 2051(45), 2.405(40), 1.9799(40)

XRD chart Decagonite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

(Co-)Type locality

(Co-)Type locality

Russland/Ferner Osten, Föderationskreis/Autonomer Kreis der Tschuktschen (Tschukotka, Chukotka)/Anadyrski (Anadyrsky), Rajon/Khatyrka Meteorit

Type material

Museo di Storia Naturale, Sezione di Mineralogia e Litologia, Universitá di Firenze, Via La Pira 4, I-50121 Firenze, Italy

Collection number of type material

3146/I

Preface

Name from

Der Name stammt von der 10-fachen Symmetrie des Minerals

Author (Name, Year)

Luca Bindi und Paul J. Steinhardt (2015)

References

Bindi, L. and Steinhardt, P.J. (2015) Decagonite, IMA 2015-017. CNMNC Newsletter No. 25, June 2015, page 535; Mineralogical Magazine, 79, 529-535.

Bindi, L., Yao, N., Lin, C., Hollister, L.S., Andronicos, C.L., Distler, V.V., Eddy, M.P., Kostin, A., Kryachko, V., Macpherson, G.J., Steinhardt, W.M., Yudovskaya, M., Steinhardt, P.J. - Decagonite, Al71Ni24Fe5, a quasicrystal with decagonal symmetry from the Khatyrka CV3 carbonaceous chondrite. American Mineralogist, 100 (2015), 2340-2343.

Other languages

German

Decagonit

English

Decagonite

Russian

Декагонит

Alternative Name

German

Dekagonit

CNMNC (IMA)-Number

IMA 2015-017

CNMNC symbol

Symbol

Dec

Locations with GPS information

IDs

GUSID (Global unique identifier short form) EllEdjMX_EGeJ6_d7iUwxA
GUID (Global unique identifier) 76445912-1733-41FC-9E27-AFDDEE2530C4
Database ID 7930



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