Mineralogy Database

Gupeiite Mineral Data

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General Gupeiite Information

Help on Chemical  Formula: Chemical Formula: Fe3Si
Help on Composition: Composition: Molecular Weight = 195.63 gm
   Iron     85.64 %  Fe
   Silicon  14.36 %  Si
           100.00 % 
Help on Empirical Formula: Empirical Formula: Fe0+3Si
Help on Environment: Environment: Innermost in spheres, surrounded by nickel-iron minerals and their oxidation products, apparently of extraterrestrial origin, found in placers.
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Yanshan area, Hebei Province, China Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the eastern passageway, Gupeikou, of the Great Wall of China.
Help on Name Pronunciation: Name Pronunciation: Gupeiite Say GUPEIITE

Gupeiite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: BSE image of a gupeiite (1) nodule surrounded by TiO2 (2).
Location: Turishkino, Leningrad District, Russia. Scale: See Image.
© Diederik Visser

Gupeiite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 5.67, Z = 4; V = 182.28 Den(Calc)= 7.13
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.156(1), 2(0.9), 1.003(0.7),

Physical Properties of Gupeiite

Help on Cleavage: Cleavage: None
Help on Color: Color: Steel gray, Black.
Help on Density: Density: 7.15
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Metallic
Help on Streak: Streak: black

Optical Properties of Gupeiite

Help on RL Color: RL Color: Grayish white with a yellow tint.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Gupeiite in Air
λ R  ∑ R(λ) 
 402 nm   48.20   
 439 nm   48.40 
 480 nm   51.00 
 495 nm   51.20 
 546 nm   53.50 
 590 nm   53.40 
 624 nm   53.90 
 644 nm   54.00 
 657 nm   54.30 
Calculated Relative Intensity Colors of Gupeiite in Air
   0%   20%   40%   60%   80% 100% 120% 140% 160% 180%

Calculated Properties of Gupeiite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.71 gm/cc
note: Specific Gravity of Gupeiite =7.13 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEGupeiite = 26.82 barns/electron
U=PEGupeiite x rElectron Density= 179.86 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gupeiite is Not Radioactive

Gupeiite Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.01)with metallic elements other than the platinum group
  (01.01.23)Suessite Group silicides Suessite (Fe,Ni)3Si I m3m 4/m 3 2/m Gupeiite Fe3Si F m3m 4/m 3 2/m Xifengite Fe5Si3 P 63/mcm 6/m 2/m 2/m Hapkeite! Fe2Si P m3m 4/m 3 2/m Luobusaite! Fe0.83Si2 C mca 2/m 2/m 2/m Mavlyanovite! Mn5Si3 P 63/mcm 6/m 2/m 2/m Brownleeite! MnSi P 213 2 3
Help on  Strunz Class: Strunz Class: 01.BB.30 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.B - Metallic Carbides, Silicides, Nitrides and Phosphides
  01.BB -Silicides
01.BB.30 Gupeiite Fe3Si F m3m 4/m 3 2/m

Other Gupeiite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Gupeiite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 01.BB.30





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