Fersilicite Mineral Data

Fersilicite Mineral Data +

General Fersilicite Information

Chemical Formula:

FeSi

Composition:

Molecular Weight = 83.93 gm

Iron 66.54 % Fe

Silicon 33.46 % Si

______

100.00 %

Empirical Formula:

Fe⁰⁺Si

IMA Status:

Not Approved IMA

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 402761

PDF 22-632

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Fersilicite Crystallography

Cell Dimensions:

a = 4.48, Z = 4; V = 89.92 Den(Calc)= 6.20

Crystal System:

Isometric - TetartoidalH-M Symbol (2 3) Space Group: P 2₁3

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 1.196(1), 1.991(1), 1.817(0.9),

Physical Properties of Fersilicite

Cleavage:

None

Color:

Tin white.

Density:

5.95

Diaphaniety:

Opaque

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Hardness:

6.5 - Pyrite

Luster:

Metallic

Streak:

grayish black

Calculated Properties of Fersilicite

Electron Density:

r_electron=5.91 gm/cc
note: r_Fersilicite=6.20 gm/cc.

Fermion Index

Fermion Index = 0.02973
Boson Index = 0.97027

Photoelectric:

PE_Fersilicite= 21.34 barns/electron
U=PE_Fersilicite x r_electron= 126.12 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Fersilicite is Not Radioactive

Fersilicite Classification

Dana Class:

2.0.0.0 (2)Sulfide Minerals

(2.0)Without Dana Classification Numbers

(Silicide)

Strunz Class:

I/A.12-50 I - Elements

I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides

I/A.12 - Perryite-Ferdisilicite series

I/A.12-10 Perryite (Ni,Fe)8(Si,P)3 R 3c 3m

I/A.12-20 Suessite (Fe,Ni)3Si I m3m 4/m 3 2/m

I/A.12-30 Gupeiite Fe3Si F m3m 4/m 3 2/m

I/A.12-35 Hapkeite! Fe2Si P m3m 4/m 3 2/m

I/A.12-40 Xifengite Fe5Si3 P 6₃/mcm 6/m 2/m 2/m

I/A.12-50 Fersilicite FeSi P 2₁3 2 3

I/A.12-60 Ferdisilicite* FeSi2 P 4/mmm 4/m 2/m 2/m

Other Fersilicite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Fersilicite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 -École des Mines de Paris

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Fersilicite

FeSi
Dana No: Unknown Strunz No: I/A.12-50
Locality:

Notes: