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Vyalsovite Mineral Data
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General Vyalsovite Information
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 Chemical Formula: |
FeS•Ca(OH)2•Al(OH)3 |
| Composition: |
Molecular Weight = 240.01 gm |
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Calcium 16.70 % Ca |
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Aluminum 11.24 % Al |
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Iron 23.27 % Fe |
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Hydrogen 2.10 % H |
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Sulfur 13.36 % S |
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Oxygen 33.33 % O |
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______ |
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100.00 % |
| Empirical Formula: |
Fe2+SCaAl(OH)5 |
| Environment: |
In a skarn. |
| IMA Status: |
Approved IMA 1990 |
| Locality: |
Talnakh, Norilsk, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Leonid N. Vyalsov (1939-), Russian mineralogist. |
| Name Pronunciation: |
Vyalsovite + Pronunciation  |
| Synonym: |
IMA1989-004 |
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Vyalsovite Image |
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Images:
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Vyalsovite
Comments: Purplish vyalsovite. Polished section from microbrobe analysis, in reflected light, parallel nicols.
Location: Komsomolskaya Mine, Talnakh, Norilsk, Russia.
Scale: Picture size 0.1 mm.
© Thomas Witzke |
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Vyalsovite Crystallography
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| Axial Ratios: |
a:b:c =0.6768:1:0.2619 |
| Cell Dimensions: |
a = 14.2, b = 20.98, c = 5.496, Z = 8; V = 1,637.35 Den(Calc)= 1.95 |
| Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C mmm ? |
| X Ray Diffraction: |
By Intensity(I/Io): 5.4(1), 2.16(0.5), 4.76(0.4), |
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Physical Properties of Vyalsovite
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| Color: |
Red. |
| Density: |
1.96 |
| Diaphaneity: |
Opaque |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Luster: |
Sub Metallic |
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Calculated Properties of Vyalsovite
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| Electron Density: |
Bulk Density (Electron Density)=1.95 gm/cc
note: Specific Gravity of Vyalsovite =1.95 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0063235533
Boson Index = 0.9936764467 |
| Photoelectric: |
PEVyalsovite = 9.88 barns/electron
U=PEVyalsovite x rElectron Density= 19.27 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vyalsovite is Not Radioactive |
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Vyalsovite Classification
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| Dana Class: |
02.14.04.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.14)(Hydroxyl or Hydrated) |
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(02.14.04)Dana Group |
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02.14.04.01 Vyalsovite FeS•Ca(OH)2•Al(OH)3 C mmm ? 2/m 2/m 2/m |
| Strunz Class: |
02.FD.45 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O |
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02.FD -With O, OH, H2O |
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02.FD.45 Vyalsovite FeS•Ca(OH)2•Al(OH)3 C mmm ? 2/m 2/m 2/m |
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Other Vyalsovite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.77,p201-206,1992) |
| See Also: |
Links to other databases for Vyalsovite :
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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Vyalsovite
FeS•Ca(OH)2•Al(OH)3
Dana No: 02.14.04.01 Strunz No: 02.FD.45
Locality:
Notes:
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