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Gupeiite Mineral Data
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General Gupeiite Information
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 Chemical Formula: |
Fe3Si |
| Composition: |
Molecular Weight = 195.63 gm |
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Iron 85.64 % Fe |
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Silicon 14.36 % Si |
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______ |
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100.00 % |
| Empirical Formula: |
Fe0+3Si |
| Environment: |
Innermost in spheres, surrounded by nickel-iron minerals and their oxidation products, apparently of extraterrestrial origin, found in placers. |
| IMA Status: |
Approved IMA 1984 |
| Locality: |
Yanshan area, Hebei Province, China Link to MinDat.org Location Data. |
| Name Origin: |
Named for the eastern passageway, Gupeikou, of the Great Wall of China. |
| Name Pronunciation: |
Gupeiite  |
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Gupeiite Image |
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Images:
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Gupeiite
Comments: BSE image of a gupeiite (1) nodule surrounded by TiO2 (2).
Location: Turishkino, Leningrad District, Russia.
Scale: See Image.
© Diederik Visser |
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Gupeiite Crystallography
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| Cell Dimensions: |
a = 5.67, Z = 4; V = 182.28 Den(Calc)= 7.13 |
| Crystal System: |
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m |
| X Ray Diffraction: |
By Intensity(I/Io): 1.156(1), 2(0.9), 1.003(0.7), |
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Physical Properties of Gupeiite
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| Cleavage: |
None |
| Color: |
Steel gray, Black. |
| Density: |
7.15 |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Hardness: |
5 - Apatite |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Gupeiite
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| RL Color: |
Grayish white with a yellow tint. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Gupeiite in Air
| λ |
R |
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∑ R(λ) |
| 402 nm |
48.20 |
 |
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| 439 nm |
48.40 |
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| 480 nm |
51.00 |
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| 495 nm |
51.20 |
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| 546 nm |
53.50 |
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| 590 nm |
53.40 |
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| 624 nm |
53.90 |
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| 644 nm |
54.00 |
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| 657 nm |
54.30 |
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Calculated Relative Intensity Colors of Gupeiite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
| R |
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Calculated Properties of Gupeiite
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| Electron Density: |
Bulk Density (Electron Density)=6.71 gm/cc
note: Specific Gravity of Gupeiite =7.13 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEGupeiite = 26.82 barns/electron
U=PEGupeiite x rElectron Density= 179.86 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gupeiite is Not Radioactive |
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Gupeiite Classification
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| Dana Class: |
01.01.23.02 (01)Native Elements |
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(01.01)with metallic elements other than the platinum group |
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(01.01.23)Suessite Group silicides |
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01.01.23.01 Suessite (Fe,Ni)3Si I m3m 4/m 3 2/m |
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01.01.23.02 Gupeiite Fe3Si F m3m 4/m 3 2/m |
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01.01.23.03 Xifengite Fe5Si3 P 63/mcm 6/m 2/m 2/m |
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01.01.23.04 Hapkeite! Fe2Si P m3m 4/m 3 2/m |
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01.01.23.05 Luobusaite! Fe0.83Si2 C mca 2/m 2/m 2/m |
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01.01.23.06 Mavlyanovite! Mn5Si3 P 63/mcm 6/m 2/m 2/m |
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01.01.23.07 Brownleeite! MnSi P 213 2 3 |
| Strunz Class: |
01.BB.30 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) |
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01.B - Metallic Carbides, Silicides, Nitrides and Phosphides |
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01.BB -Silicides |
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01.BB.30 Gupeiite Fe3Si F m3m 4/m 3 2/m |
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Other Gupeiite Information
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3) |
| 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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Gupeiite
Fe3Si
Dana No: 01.01.23.02 Strunz No: 01.BB.30
Locality:
Notes:
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