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Uzonite Mineral Data
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General Uzonite Information
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 Chemical Formula: |
As4S5 |
| Composition: |
Molecular Weight = 460.02 gm |
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Arsenic 65.15 % As |
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Sulfur 34.85 % S |
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______ |
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100.00 % |
| Empirical Formula: |
As4S5 |
| Environment: |
As intergrowths with realgar in the pore spaces of tuffaceous sediments in a caldera. |
| IMA Status: |
Approved IMA 1985 |
| Locality: |
Uzon caldera, Kamchatka, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Uzonite  |
| Synonym: |
ICSD 16107 |
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PDF 39-331 |
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Usonite |
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Uzonite Image |
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Images:
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Uzonite Crystallography
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| Axial Ratios: |
a:b:c =0.9848:1:0.8829 |
| Cell Dimensions: |
a = 7.973, b = 8.096, c = 7.148, Z = 2; beta = 100.01° V = 454.38 Den(Calc)= 3.36 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.599(1)(120), 5.8042(0.74)(101), 2.8135(0.66)(220),5.3023(0.64)(011), 2.7448(0.47)(221), 2.9021(0.41)(202), 2.024(0.39)(040), 3.219(0.28)(012),
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Physical Properties of Uzonite
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| Cleavage: |
{001} Distinct |
| Color: |
Yellow. |
| Density: |
3.37 |
| Diaphaneity: |
Transparent |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
| Hardness: |
1.5 - Between Talc and Gypsum |
| Luster: |
Pearly |
| Streak: |
yellow |
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Optical Properties of Uzonite
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| Optical Data: |
Biaxial (+), a=2.38, g=2.68, bire=0.3000 |
| RL Color: |
Grayish white with bright yellow internal reflections. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Uzonite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
20.10 |
18.80 |
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| 425 nm |
20.00 |
18.80 |
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| 450 nm |
19.90 |
18.70 |
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| 475 nm |
19.70 |
18.30 |
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| 500 nm |
19.20 |
18.10 |
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| 525 nm |
19.80 |
19.00 |
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| 550 nm |
20.00 |
19.40 |
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| 575 nm |
19.90 |
19.40 |
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| 600 nm |
19.70 |
19.30 |
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| 625 nm |
19.40 |
19.20 |
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| 650 nm |
19.30 |
19.10 |
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| 675 nm |
19.20 |
19.00 |
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| 700 nm |
19.00 |
18.80 |
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Calculated Relative Intensity Colors of Uzonite in Air
Relative
Intensity |
0% |
50% |
100% |
150% |
200% |
250% |
300% |
350% |
400% |
450% |
480% |
| R1 |
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| R2 |
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Calculated Properties of Uzonite
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| Electron Density: |
Bulk Density (Electron Density)=3.10 gm/cc
note: Specific Gravity of Uzonite =3.36 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0026139829
Boson Index = 0.9973860171 |
| Photoelectric: |
PEUzonite = 47.63 barns/electron
U=PEUzonite x rElectron Density= 147.49 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Uzonite is Not Radioactive |
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Uzonite Classification
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| Dana Class: |
02.08.22.03 (02)Sulfides - Including Selenides and Tellurides |
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(02.08)where Am Bn Xp, with (m+n):p=1:1 |
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(02.08.22)Realgar Series |
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02.08.22.01 Realgar AsS P 21/n 2/m |
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02.08.22.02 Pararealgar AsS P 21/c 2/m |
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02.08.22.03 Uzonite As4S5 P 21/m 2/m |
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02.08.22.04 Alacranite As8S9 P 2/c 2/m |
| Strunz Class: |
02.FA.25 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.25 Uzonite As4S5 P 21/m 2/m |
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Other Uzonite Information
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| References: |
NAME( Athena) PHYS. PROP.(Dana8, CanMin v 41, p 1463) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Uzonite :
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 Uzonite Specimen Label here :
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Uzonite
As4S5
Dana No: 02.08.22.03 Strunz No: 02.FA.25
Locality:
Notes:
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