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Ferdisilicite Mineral Data
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General Ferdisilicite Information
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Chemical Formula: |
FeSi2 |
Composition: |
Molecular Weight = 112.02 gm |
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Iron 49.86 % Fe |
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Silicon 50.14 % Si |
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______ |
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100.00 % |
Empirical Formula: |
Fe0+Si2 |
Environment: |
Found in heavy mineral concentrates from placers and in drill-core samples of sandstones of the Poltava series. |
IMA Status: |
Not Approved IMA - Published without Approval 1969 |
Locality: |
Zachativsk station, Donets region, Russia. Link to MinDat.org Location Data. |
Name Origin: |
Name for the chemical composition (Ferrous and two (di) Silicide). |
Name Pronunciation: |
Ferdisilicite + Pronunciation |
Synonym: |
ICSD 42562 |
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PDF 35-822 |
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Ferdisilicite Image |
Images:
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Ferdisilicite Crystallography
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Axial Ratios: |
a:c = 1:1.88847 |
Cell Dimensions: |
a = 2.69, c = 5.08, Z = 1; V = 36.76 Den(Calc)= 5.06 |
Crystal System: |
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/mmm |
X Ray Diffraction: |
By Intensity(I/Io): 1.089(1), 1.846(1), 2.371(0.9), |
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Physical Properties of Ferdisilicite
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Cleavage: |
None |
Color: |
Steel gray. |
Density: |
5.05 |
Diaphaneity: |
Opaque |
Fracture: |
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
Hardness: |
6.5 - Pyrite |
Luster: |
Metallic |
Streak: |
black |
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Calculated Properties of Ferdisilicite
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Electron Density: |
Bulk Density (Electron Density)=4.88 gm/cc note: Specific Gravity of Ferdisilicite =5.06 gm/cc. |
Fermion Index: |
Fermion Index = 0.03 Boson Index = 0.97 |
Photoelectric: |
PEFerdisilicite = 16.68 barns/electron U=PEFerdisilicite x rElectron Density= 81.35 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Ferdisilicite is Not Radioactive |
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Ferdisilicite Classification
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Dana Class: |
02.00.00.00 (02)Sulfide Minerals |
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(02.00)Without Dana Classification Numbers |
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(02.00.00)Silicide |
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02.00.00.00 Argentite* Ag2S I m3m 4/m 3 2/m |
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02.00.00.00 Bayankhanite? Cu6HgS4 Unk Hex |
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02.00.00.00 Bismutoplagionite* 5PbS.4Bi2S3 Unk Ortho |
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02.00.00.00 Bravoite? (Fe,Ni,Co)S2 P a3 2/m 3 |
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02.00.00.00 Colimaite K3VS4 P nma 2/m 2/m 2/m |
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02.00.00.00 Dayingite* CuCoPtS4 F m3m 4/m 3 2/m |
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02.00.00.00 Dilithium* Li2Te P 222 2 2 2 |
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02.00.00.00 Dzhezkazganite* (Pb,Cu,Rh)S2(?) P a3? 2/m 3 |
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02.00.00.00 Ferdisilicite* FeSi2 P 4/mmm 4/m 2/m 2/m |
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02.00.00.00 Fersilicite* FeSi P 213 2 3 |
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02.00.00.00 Horobetsuite* (Bi,Sb)2S3 Pbnm 2/m 2/m 2/m |
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02.00.00.00 Horomanite Fe6Ni3S8 P 4/mmm 4mm |
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02.00.00.00 Imgreite? NiTe P 63/mmc 6/m 2/m 2/m |
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02.00.00.00 Iridisite* (Ir,Cu,Rh,Ni,Pt)S2 Unk Cubic |
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02.00.00.00 Isochalcopyrite? Cu8Fe9S16 Unk Cubic |
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02.00.00.00 Jaipurite* CoS P 63/mmc 6/m 2/m 2/m |
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02.00.00.00 Kitaibelite? Ag10PbBi30S51 Mono ? Mono |
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02.00.00.00 Kurilite? (Ag,Au)2(Te,Se,S) P m3n,P 43n Cubic |
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02.00.00.00 Plumosite* Pb2Sb2S5 Mono |
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02.00.00.00 Protojoseite* Bi4TeS2(?) R 3m 3 2/m |
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02.00.00.00 Samaniite Cu2Fe5Ni2S8 P 41/mmm 4mm |
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02.00.00.00 Stibioenargite* Cu3(Sb,As)S4 Unk Ortho |
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02.00.00.00 Sztrokayite* Bi3TeS2 Trig ? Trig |
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02.00.00.00 Volfsonite* Cu10CuFeFe2Sn3S16 P 42m-,P 4212 Tetra |
Strunz Class: |
01.BB.20 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.20 Ferdisilicite* FeSi2 P 4/mmm 4/m 2/m 2/m |
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Other Ferdisilicite Information
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References: |
NAME( AmMin, v54:1737) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Ferdisilicite :
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 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
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Print or Cut-and-Paste your Ferdisilicite Specimen Label here :
Ferdisilicite
FeSi2
Dana No: 02.00.00.00 Strunz No: 01.BB.20
Locality:
Notes:
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