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Duranusite Mineral Data
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General Duranusite Information
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 Chemical Formula: |
As4S |
| Composition: |
Molecular Weight = 331.75 gm |
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Arsenic 90.33 % As |
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Sulfur 9.67 % S |
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______ |
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100.00 % |
| Empirical Formula: |
As4S |
| Environment: |
Realgar has been altered by deuteric solutions to form the rare mineral duranusite, |
| IMA Status: |
Approved IMA 1973 |
| Locality: |
Duranus, Alpes-Meritimes, France. Mina Capillitas, an epithermal deposit in the Province of Catamarca, Argentina. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Duranusite + Pronunciation  |
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Duranusite Image |
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Images:
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Duranusite Crystallography
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| Axial Ratios: |
a:b:c =0.529:1:1.4904 |
| Cell Dimensions: |
a = 3.576, b = 6.759, c = 10.074, Z = 2; V = 243.49 Den(Calc)= 4.52 |
| Crystal System: |
Orthorhombic Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 2.919(1), 5.037(0.9), 5.62(0.9), |
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Physical Properties of Duranusite
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| Color: |
Red. |
| Density: |
4.5 |
| Diaphaneity: |
Opaque |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
2 - Gypsum |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Duranusite
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| RL Color: |
Gray-white with a brownish tint and brownish red internal reflections. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Duranusite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
39.00 |
42.00 |
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| 420 nm |
36.80 |
39.40 |
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| 440 nm |
34.60 |
36.80 |
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| 460 nm |
33.00 |
34.80 |
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| 480 nm |
32.10 |
33.60 |
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| 500 nm |
31.40 |
32.70 |
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| 520 nm |
30.80 |
32.20 |
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| 540 nm |
30.40 |
31.80 |
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| 560 nm |
30.00 |
31.50 |
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| 580 nm |
29.60 |
31.00 |
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| 600 nm |
29.10 |
30.60 |
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| 620 nm |
28.70 |
30.30 |
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| 640 nm |
28.40 |
30.00 |
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| 660 nm |
28.00 |
29.70 |
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| 680 nm |
27.60 |
29.30 |
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| 700 nm |
27.10 |
29.00 |
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Calculated Relative Intensity Colors of Duranusite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
300% |
| R1 |
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| R2 |
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Calculated Properties of Duranusite
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| Electron Density: |
Bulk Density (Electron Density)=4.03 gm/cc
note: Specific Gravity of Duranusite =4.52 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0007249232
Boson Index = 0.9992750768 |
| Photoelectric: |
PEDuranusite = 65.88 barns/electron
U=PEDuranusite x rElectron Density= 265.70 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Duranusite is Not Radioactive |
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Duranusite Classification
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| Dana Class: |
02.01.04.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.01)where Am Xp, with m:p>3:1 |
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(02.01.04)Dana Group |
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02.01.04.01 Duranusite As4S Unk Ortho |
| Strunz Class: |
02.FA.05 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.FA -With As, (Sb), S |
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02.FA.05 Duranusite As4S Unk Ortho |
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Other Duranusite Information
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| References: |
NAME( CanMin, 10/99) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Duranusite :
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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Print or Cut-and-Paste your Duranusite Specimen Label here :
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Duranusite
As4S
Dana No: 02.01.04.01 Strunz No: 02.FA.05
Locality:
Notes:
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