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Seinajokite Mineral Data |
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Seinajokite Mineral Data |
General Seinajokite Information |
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 Chemical Formula: |
(Fe,Ni)(Sb,As)2 | |
| Composition: |
Molecular Weight = 276.64 gm | |
| Iron 15.14 % Fe | ||
| Nickel 5.30 % Ni | ||
| Antimony 66.01 % Sb | ||
| Arsenic 13.54 % As | ||
| ______ | ||
| 100.00 % | ||
| Empirical Formula: |
Fe2+0.75Ni0.25Sb1.5As0.5 | |
| Environment: |
In an antimony deposit, replacing antimony. | |
| IMA Status: |
Approved IMA 1976 | |
| Locality: |
In the Sein�joki deposit, Vaasa, Finland Link to MinDat.org Location Data. | |
| Name Origin: |
Named for the locality. | |
| Name Pronunciation: |
Seinajokite + Pronunciation  |
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Seinajokite Crystallography |
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| Axial Ratios: |
a:b:c =0.549:1:1.117 | |
| Cell Dimensions: |
a = 3.19, b = 5.81, c = 6.49, Z = 2; V = 120.29 Den(Calc)= 7.64 | |
| Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnnm | |
| X Ray Diffraction: |
By Intensity(I/Io): 2.81(1), 2.59(0.9), 2.03(0.8), | |
Physical Properties of Seinajokite |
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| Color: |
Gray. | |
| Diaphaneity: |
Opaque | |
| Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. | |
| Hardness: |
5 - Apatite | |
| Luster: |
Metallic | |
Optical Properties of Seinajokite |
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| RL Anisotrophism: |
Distinct, brown to blue. | |
| RL Color: |
Light gray with a rose tint. | |
Calculated Properties of Seinajokite |
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| Electron Density: |
Bulk Density (Electron Density)=6.60 gm/cc note: Specific Gravity of Seinajokite =7.64 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.003809113 Boson Index = 0.996190887 |
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| Photoelectric: |
PESeinajokite = 242.19 barns/electron U=PESeinajokite x rElectron Density=1,598.53 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Seinajokite is Not Radioactive |
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Seinajokite Classification |
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| Dana Class: |
02.12.02.10 (02)Sulfides - Including Selenides and Tellurides | |
| (02.12)where Am Bn Xp, with (m+n):p=1:2 | ||
| (02.12.02)Marcasite Group (Orthorhombic: Pnnm) | ||
| Strunz Class: |
02.EB.15b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf | |
| 02.E - Metal Sulfides, M:S � 1:2 | ||
| 02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc. | ||
Other Seinajokite Information |
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) | |
| See Also: |
Links to other databases for Seinajokite : 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 Search for Seinajokite using: Visit our Advertisers for Seinajokite : Ask about Seinajokite here : Print or Cut-and-Paste your Seinajokite Specimen Label here :
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