The Fe analogue of mavlyanovite. One of many natural Fe-Si phases; beside the approved species (listed below) you may want to compare Unnamed (Fe silicide I), Unnamed (Fe silicide II) and UM2000-60-Si:Fe.

The Fe(Si)-analogue of wenjiite.

Unique IdentifiersHide

Mindat ID:

4335

Long-form identifier:

mindat:1:1:4335:5

GUID
(UUID V4):

fa1ff181-5061-4fe6-ab27-7a2a072d68bc

IMA Classification of XifengiteHide

IMA status:

Approved

Approval year:

1983

First published:

1984

Type description reference:

Yu, Z. (1984) Two new minerals gupeiite and xifengite in cosmic dusts from Yanshan. Acta Petrologica Mineralogica et Analytica: 3: 231-238.

Classification of XifengiteHide

Strunz-mindat (2023):

1.BB.40

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides, Phosphides and Hydrides
B : Silicides

Dana 7th ed.:

1.1.33.4

Dana 8th ed.:

1.1.23.3

1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group

Hey's CIM Ref.:

2.8

2 : Carbides, Nitrides, Silicides and Phosphides

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Xif	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of XifengiteHide

Lustre:

Metallic

Transparency:

Opaque

Colour:

Grey, Steel-black

Streak:

Black

Hardness:

5 on Mohs scale

Hardness:

VHN₅₀=633 - 694 kg/mm² - Vickers

Tenacity:

Brittle

Cleavage:

None Observed

Density:

6.45 g/cm³ (Calculated)

Optical Data of XifengiteHide

Anisotropism:

Moderate, bluish gray to pale brown

Reflectivity:

Wavelength	R₁	R₂
402nm	38.3%	37.9%
439nm	38.4%	38.9%
480nm	40.1%	39.8%
495nm	42.0%	40.4%
546nm	44.1%	43.0%
590nm	46.2%	44.9%
624nm	47.6%	44.7%
644nm	45.3%	44.2%
657nm	45.9%	45.3%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 47.6%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

Gray with a yellow tint

Pleochroism:

Not Visible

Chemistry of XifengiteHide

Mindat Formula:

Fe₅Si₃

Elements listed:

Fe, Si - search for minerals with similar chemistry

Crystallography of XifengiteHide

Crystal System:

Hexagonal

Class (H-M):

6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal

Space Group:

P6₃/mcm

Setting:

P6₃/mcm

Cell Parameters:

a = 6.759(5) Å, c = 4.720(5) Å

Ratio:

a:c = 1 : 0.698

Unit Cell V:

186.74 Å³ (Calculated from Unit Cell)

Comment:

By analogy to synthetic, isotypic Mn5Si3.

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

View
CIF File Best | x | y | z | a | b | c

Rotation
Stop | Start

Labels
Console Off | On | Grey | Yellow

Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Pressure (GPa)	Temp (K)
0014672	Xifengite	Weill A R (1943) Structure of the eta phase of the iron-silicon system Nature 152 413-413	1943		0	293
0019670	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	0.0001	293
0019671	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	1.8	293
0019672	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	3.6	293
0019673	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	4.5	293
0019674	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	5.7	293
0019675	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	7.5	293
0019676	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	8.8	293
0019677	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	11	293
0019678	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	14.4	293
0019679	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	18.7	293
0019680	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	22.6	293
0019681	Xifengite	Santamaria-Perez D, Nuss J, Haines J, Jansen M, Vegas A (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3 Solid State Sciences 6 673-678	2004	synthetic	30	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Xifengite'
loop_
_publ_author_name
'Weill A R'
_journal_name_full 'Nature'
_journal_volume 152 
_journal_year 1943
_journal_page_first 413
_journal_page_last 413
_publ_section_title
;
 Structure of the eta phase of the iron-silicon system
;
_database_code_amcsd 0014672
_chemical_formula_sum 'Fe5 Si3'
_cell_length_a 6.7416
_cell_length_b 6.7416
_cell_length_c 4.7079
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 185.304
_exptl_crystal_density_diffrn      6.515
_symmetry_space_group_name_H-M 'P 63/m c m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,z'
  'x,x-y,-z'
  '-x+y,-x,1/2-z'
  'x-y,x,1/2+z'
  '-y,-x,1/2+z'
  'y,x,1/2-z'
  'y,-x+y,-z'
  '-y,x-y,z'
  'x-y,-y,z'
  '-x+y,y,-z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  'x,x-y,1/2+z'
  '-x,-x+y,1/2-z'
  'x-y,x,-z'
  '-x+y,-x,z'
  'y,x,z'
  '-y,-x,-z'
  '-y,x-y,1/2-z'
  'y,-x+y,1/2+z'
  '-x+y,y,1/2+z'
  'x-y,-y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Fe1   0.33333   0.66667   0.00000
Fe2   0.23000   0.00000   0.25000
Si   0.60000   0.00000   0.25000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.00 Å	(100)
1.94 Å	(80)
1.92 Å	(80)
1.282 Å	(80)
2.21 Å	(60)
1.050 Å	(60)
1.375 Å	(50)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration	4.566-4.550
6 : Secondary asteroid phases	4.566-4.560
Near-surface Processes
26 : Hadean detrital minerals

Type Occurrence of XifengiteHide

Type Locality:

ⓘ Placer occurrences (Yanshan meteorite), Chengde, Hebei, China

General Appearance of Type Material:

Cores of spheres 0.1-0.5 mm in diameter in placers.

Place of Conservation of Type Material:

Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China.

Geological Setting of Type Material:

Placer

Associated Minerals at Type Locality:

Wüstite	Taenite	Magnetite	Maghemite	Kamacite
Gupeiite

Reference:

Yu, Z. (1984) Two new minerals gupeiite and xifengite in cosmic dusts from Yanshan. Acta Petrologica Mineralogica et Analytica: 3: 231-238.

Download:

https://rruff.info/rruff_1.0/uploads/YKCS3_231.pdf

Synonyms of XifengiteHide

IMA1983-086

Other Language Names for XifengiteHide

German:Xifengit

Russian:Цзифенгит

Simplified Chinese:喜峰矿

Spanish:Xifengita

Common AssociatesHide

Associated Minerals Based on Photo Data:

5 photos of Xifengite associated with Gupeiite	Fe₃Si
5 photos of Xifengite associated with Naquite	FeSi

Related Minerals - Strunz-mindat Grouping Hide

1.BB.	Zangboite	TiFeSi₂	Orth. mmm (2/m 2/m 2/m) : Pbam
1.BB.	Brownleeite	MnSi	Iso. 2 3 : P2₁ 3
1.BB.	Kangjinlaite	Ti₁₁Si₁₀	Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
1.BB.	Toledoite	TiFeSi	Orth. mm2 : Ima2
1.BB.	Yeite	TiSi	Orth. mmm (2/m 2/m 2/m) : Pnma
1.BB.05	Suessite	(Fe,Ni)₃Si	Iso. m3m (4/m 3 2/m) : Im3m
1.BB.05	Mavlyanovite	Mn₅Si₃	Hex. 6/mmm (6/m 2/m 2/m) : P6₃/mcm
1.BB.10	UM2001-18-Si:CuPtSn	(Cu,Pt)₄Si
1.BB.10	Perryite	(Ni,Fe)₅(Si,P)₂	Trig. 3m : R3c
1.BB.15	Naquite	FeSi	Iso. 2 3 : P2₁ 3
1.BB.20	Linzhiite	FeSi₂	Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
1.BB.25	Luobusaite	Fe_0.84Si₂	Orth. mmm (2/m 2/m 2/m) : Cmca
1.BB.30	Gupeiite	Fe₃Si	Iso. m3m (4/m 3 2/m) : Fm3m
1.BB.35	Hapkeite	Fe₂Si	Iso. m3m (4/m 3 2/m) : Pm3m
1.BB.45	Carletonmooreite	Ni₃Si	Iso. m3m (4/m 3 2/m) : Pm3m
1.BB.55	Palladosilicide	Pd₂Si	Hex. 6 m2 : P6₂m
1.BB.65	Zhiqinite	TiSi₂	Orth. mmm (2/m 2/m 2/m) : Fddd

Other InformationHide

Notes:

Strongly magnetic

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for XifengiteHide

mindat.org URL:

https://www.mindat.org/min-4335.html
Please feel free to link to this page.

Search Engines:

Look for Xifengite on Google

Look for Xifengite images on Google

Look for Xifengite on Bing

Look for Xifengite images on Bing

Look for Xifengite on DuckDuckGo

Look for Xifengite images on DuckDuckGo

Look for Xifengite in the Rock H. Currier Digital Library

External Links:

Look for Xifengite on Webmineral

Look for Xifengite on Wikipedia

Look for Xifengite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

High-end worldwide specimens & outstanding customer service

Buy from David K Joyce minerals

Buy from McDougall Minerals

Buy rare minerals from Excalibur Minerals

The Arkenstone - Fine Minerals

Blue Gems Australian & International

Fine Minerals from Weinrich Minerals, Inc.

Wilensky Exquisite Minerals

References for XifengiteHide

Reference List:

Chemical Abstracts 103, 90560.

Weill, A.R. (1943) Structure of the eta phase of the iron-silicon system. Nature: 152: 413-413.

Aronsson, B. (1958) An investigation of the Me5Si3-MeSi region of the Mn-Fe-Si and some related systems. Acta Chemica Scandinavica: 12: 308-313.

Johnson, V., Weiher, J.F., Frederick, C.G., Rogers, D.B. (1972) Magnetic and Mössbaur effect studies of Mn5Si3:Fe5Si3 solid solutions. Journal of Solid State Chemistry: 4: 311-323.

Yu, Z. (1984) Two new minerals gupeiite and xifengite in cosmic dusts from Yanshan. Acta Petrologica Mineralogica et Analytica: 3: 231-238. (in Chinese with English abstract).

Yu, Z. (1984) Two new minerals gupeiite and xifengite in cosmic dusts from Yanshan. Acta Petrologica Mineralogica et Analytica: 3: 231-238.

Dunn, P.J., Chao, G.Y., Fitzpatrick, J.J., Langley, R.H., Fleischer, M., Zilczer, J.A. (1986) New mineral names. American Mineralogist: 71: 227-232.

Santamaría-Pérez, D., Nuss, J., Haines, J., Jansen, M., Vegas, A. (2004) Iron silicides and their corresponding oxides: a high-pressure study of Fe5Si3. Solid State Sciences: 6: 673-678.

Errandonea, D., Santamaría-Perez, D., Vegas, A., Nuss, J., Jansen, M., Rodríguez-Hernandez, P., Muñoz, A. (2008) Structural stability of Fe5Si3 and Ni2Si studied by high-pressure X-ray diffraction and ab initio total-energy calculations. Physical Review B - Condensed Matter: 77: 094113-1-094113-12.

Localities for XifengiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Belarus
Mogilev Region Babruysk District ⓘ Bobruisk Ring Structure	Levitskiy, V. I., Solodilova, V. V., Zavadich, N. S., Pavlova, L. A., & Levitskiy, I. V. (2018, July). Genetic Nature of Mineralization with Native and Intermetallic Compounds in the Bobruisk Ring Structure (Republic of Belarus). In Doklady Earth Sciences (Vol. 481, No. 1, pp. 857-861). Pleiades Publishing. Rappenglück, M. A. (2022). Natural Iron Silicides: A Systematic Review. Minerals, 12(2), 188.

China (TL)
Hebei Chengde ⓘ Placer occurrences (Yanshan meteorite) (TL)	Yu, Z. (1984) Two new minerals gupeiite and xifengite in cosmic dusts from Yanshan. Acta Petrologica Mineralogica et Analytica: 3: 231-238. Dunn, P.J., Chao, G.Y., Fitzpatrick, J.J., Langley, R.H., Fleischer, M., Zilczer, J.A. (1986) New mineral names. American Mineralogist: 71: 227-232.
Zhejiang Lishui ⓘ Longquan	Xiongjian Hu (1991): Acta Mineralogica Sinica 1l(3), 285-289.

Pacific Ocean
Mid-Pacific Rise ⓘ 19N 175W ?	Rudashevskii, N.S., Kretser, Yu.L., Anikeeva, L.I., Andreev,, S.I., Torokhov, M.P., Kazakova, V.E. (2001) Platinum minerals in oceanic ferromanganese crusts. Doklady Earth Sciences: 378(4): 464–467. Jambor, J.L., Grew, E.S., Roberts, A.C. (2002) New mineral names. American Mineralogist: 87: 181-184 (182).

Russia
Bashkortostan Ishimbayskiy Rayon ⓘ Utar-Yurt	Rappenglück, M. A. (2022). Natural Iron Silicides: A Systematic Review. Minerals, 12(2), 188.
Chukotka Autonomous Okrug Anadyrsky District Iomrautvaam massif ⓘ Khatyrka meteorite	Ma, C., Lin, C., Bindi, L., Steinhardt, P.J. (2016): Discovery of new Al-Cu-Fe minerals in the Khatyrka CV3 meteorite. 79th Annual Meeting of the Meteoritical Society, PDF no. 6017. [http://www.hou.usra.edu/meetings/metsoc2016/pdf/6017.pdf]
Krasnoyarsk Krai Targhasa massif ⓘ Kaltat Creek	Rappenglück, M. A. (2022). Natural Iron Silicides: A Systematic Review. Minerals, 12(2), 188.
Sverdlovsk Oblast Nizhnyaya Tura ⓘ Is River	*Pavel.M. Kartashov (n.d.) analytical data.* Rappenglück, M. A. (2022). Natural Iron Silicides: A Systematic Review. Minerals, 12(2), 188.

Ukraine
Donetsk Oblast Donetsk Zachativsk station ⓘ Poltava series	Steffen Möckel EDS analysis (2006)

USA
Michigan Roscommon County ⓘ Houghton Lake	Stefano, C.J. Hackney, S.A. Kampf, A.R. (2020) The occurrence of iron silicides in a fulgurite: Implications for fulgurite genesis. Can. Mineral. 58:115–123.

Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 20, 2024 06:06:18 Page updated: November 27, 2023 14:26:02

Go to top of page

Xifengite

About XifengiteHide