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Xifengite (Xifengit)

Collectors Summary

Color stahlgrau-met.
Streak color schwarz
Hardness (Mohs) 5.5
Crystal System hexagonal, P63/mcm

Chemism

Chemical formula

Fe5Si3

Chemical composition

Eisen, Silicium

Unit weight: 363.48259 u; Number of atoms in the formula: 8

Info

Empirical formula:

Fe5Si3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Silicon

Si

23.18

3

37.50

28.0855300

84.2565900
Iron

Fe

76.82

5

62.50

55.8452000

279.2260000

Analysis wt%

Ø Fe : 75.50, Si : 23.70 (Ref: Acta Petr.Min.Analyt.84)

Strunz 9th edition incl. updates

1.BB.05

1: Elemente (Metalle, intermetallische Legierungen, Metalloide u. Nichtmetalle, Carbide, Silicide, Nitride u. Phosphide)
B: Metallische Kohlenstoffverbindungen (Carbide), Strickstoffverbindungen (Nitride) und Phosphorverbindungen (Phosphide)
B: Silicide
05:Suessit-Gupeiit-Gruppe

Lapis Classification

I/A.12-040

I: ELEMENTE
A: Metalle und intermetallische Verbindungen
12: Carbide, Nitride, Phosphide und Silicide (metallartige Verbindungen)

Classification by Hölzel

1.BB.250

1: ELEMENTS
B: Carbides, Silicides, Phosphides, Nitrides
B: Silicides

Dana 8th edition

01.01.23.03

01: Native Elements and Alloys
01: Native Elements with metallic elements other than the platinum group
23: Suessite Group silicides

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

stahlgrau-met.

Streak color

schwarz

Crystallography

Crystal System

hexagonal

Class (H-M)

6/mmm

Space Group number

193

Space Group

P63/mcm

Cell parameters a (Å)

6.759

Cell parameters b (Å)

-

Cell parameters c (Å)

4.720

Cell parameters a/b or c/a

0.698

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volumne (ų)

186.74

X-Ray Powder Diffraction

2.21(60),
2.00(100),
1.94(80),
1.92(80),
1.375(50),
1.282(80),
1.244(50),
1.050(60)
XRD chart Xifengite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

664 (50g)

Density (g/cm³)

6.45 (berechnet)

6.464 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

China/Hebei, Provinz/Chengde, bezirksfreie Stadt/Yanshan Meteorit

Preface

Author (Name, Year)

Yu, 1984

References

Acta Petrologica, Mineralogica et Analytica (in Chinese) 3 (1984), 231

Michael A. Rappenglück: Natural Iron Silicides: A Systematic Review. Minerals Vol. 12, Nr. 2 (2022) Art.-Nr. 188. doi:10.3390/min12020188; Open Access

Other languages

German

Xifengit

Spanish

Xifengita

English

Xifengite

French

Xifengite

Russian

Цзифенгит

Simplified Chinese

喜峰矿

CNMNC (IMA)-Number

IMA 1983-086

CNMNC symbol

Symbol

Xif

Locations with GPS information