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Viaeneite Mineral Data
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General Viaeneite Information
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 Chemical Formula: |
(Fe,Pb)4S8O |
| Composition: |
Molecular Weight = 526.19 gm |
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Iron 40.33 % Fe |
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Lead 7.88 % Pb |
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Sulfur 48.75 % S |
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Oxygen 3.04 % O |
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______ |
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100.00 % |
| Empirical Formula: |
Fe2+3.8Pb0.2S8O |
| Environment: |
In a carbonate-hosted deposit. |
| IMA Status: |
Approved IMA 1995 (Dana # Added) |
| Locality: |
La Mallieue lead-zinc deposit, Engis, about 40 km southwest of Liege, Belgium. Link to MinDat.org Location Data. |
| Name Origin: |
For Prof. Willy Viaene (1943-), Katholieke Universiteit Leuven, Belgium. |
| Name Pronunciation: |
Viaeneite + Pronunciation  |
| Synonym: |
IMA1993-051 |
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Viaeneite Crystallography
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| Axial Ratios: |
a:b:c =1.3347:1:0.9009 |
| Cell Dimensions: |
a = 9.717, b = 7.28, c = 6.559, Z = 2; beta = 95° V = 462.22 Den(Calc)= 3.78 |
| Crystal System: |
Monoclinic |
| X Ray Diffraction: |
By Intensity(I/Io): 2.709(1), 1.758(0.8), 2.419(0.8),2.323(0.7), |
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Physical Properties of Viaeneite
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| Cleavage: |
{110} Good |
| Color: |
Yellow. |
| Density: |
3.7 - 3.9, Average = 3.8 |
| Diaphaneity: |
Opaque |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Spherical - Spherical, rounded aggregates. |
| Hardness: |
3.5-4.5 - Between Copper Penny and Fluorite-Apatite |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Viaeneite
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| RL Anisotrophism: |
Ver strong in orange, yellow orange, gray with green hue. |
| RL Bireflectance: |
Distinct. |
| RL Color: |
Yellow with a brassy hue. |
| RL Pleochroism: |
Distinct, grayish brown, orange, yellow-orange. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Viaeneite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
19.50 |
32.90 |
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| 550 nm |
23.80 |
36.80 |
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| 590 nm |
24.60 |
37.40 |
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| 650 nm |
25.10 |
37.30 |
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Standardized Intensity (100%) Reflection Spectra of Viaeneite in Oil
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
11.70 |
17.60 |
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| 550 nm |
14.80 |
21.60 |
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| 590 nm |
15.30 |
21.90 |
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| 650 nm |
14.90 |
20.60 |
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Calculated Relative Intensity Colors of Viaeneite in Air
Relative
Intensity |
0% |
50% |
100% |
150% |
200% |
250% |
300% |
350% |
400% |
450% |
| R1 |
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| R2 |
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Calculated Relative Intensity Colors of Viaeneite in Oil
Relative
Intensity |
0% |
80% |
100% |
160% |
240% |
320% |
400% |
480% |
560% |
640% |
720% |
750% |
| R1 |
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| R2 |
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Calculated Properties of Viaeneite
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| Electron Density: |
Bulk Density (Electron Density)=3.61 gm/cc
note: Specific Gravity of Viaeneite =3.78 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEViaeneite = 141.59 barns/electron
U=PEViaeneite x rElectron Density= 511.02 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Viaeneite is Not Radioactive |
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Viaeneite Classification
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| Dana Class: |
02.13.04.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.13)(Oxysulfides) |
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(02.13.04)Dana Group |
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02.13.04.01 Viaeneite! (Fe,Pb)4S8O Mono |
| Strunz Class: |
02.FD.10 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.10 Viaeneite! (Fe,Pb)4S8O Mono |
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Other Viaeneite Information
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| References: |
NAME( MinRec, Vol. 28, No. 3) PHYS. PROP.(Eur. J. Min.,Vol.8,1996) OPTIC PROP.(MinRec, v 28, p 224) |
| See Also: |
Links to other databases for Viaeneite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
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 Viaeneite Specimen Label here :
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Viaeneite
(Fe,Pb)4S8O
Dana No: 02.13.04.01 Strunz No: 02.FD.10
Locality:
Notes:
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