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Zoubekite Mineral Data
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General Zoubekite Information
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 Chemical Formula: |
AgPb4Sb4S10 |
| Composition: |
Molecular Weight = 1,744.33 gm |
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Silver 6.18 % Ag |
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Antimony 27.92 % Sb |
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Lead 47.51 % Pb |
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Sulfur 18.38 % S |
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______ |
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100.00 % |
| Empirical Formula: |
AgPb4Sb4S10 |
| Environment: |
In hydrothermal veins. |
| IMA Status: |
Approved IMA 1986 |
| Locality: |
Pribram, Czech Republic. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Vladimir Zoubek (1903-), Czech geologist. |
| Name Pronunciation: |
Zoubekite + Pronunciation  |
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Zoubekite Crystallography
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| Axial Ratios: |
a:b:c =2.8801:1:0.705 |
| Cell Dimensions: |
a = 18.698, b = 6.492, c = 4.577, Z = 1; V = 555.59 Den(Calc)= 5.21 |
| Crystal System: |
Orthorhombic Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 1.797(1), 1.325(0.8), 2.222(0.8), |
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Physical Properties of Zoubekite
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| Cleavage: |
None |
| Color: |
Steel gray. |
| Density: |
5.15 |
| Diaphaneity: |
Opaque |
| Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
| Habit: |
Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape. |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
3.5-4 - Copper Penny-Fluorite |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Zoubekite
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| Optical Data: |
NCalc= 1.41 - from Gladstone-Dale relationship (KC = 0.0792) where Ncalc=Dcalc*KC+1
NCalc= 1.41 - from Gladstone-Dale relationship (KC = 0.0792) where Ncalc=Dmeas*KC+1
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| RL Anisotrophism: |
Strong, from light to dark gray with a faint greenish tint. |
| RL Color: |
White with a faint yellowish tint to light gray. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Zoubekite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 420 nm |
38.60 |
44.30 |
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| 440 nm |
38.50 |
44.00 |
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| 460 nm |
38.40 |
44.00 |
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| 480 nm |
38.00 |
43.70 |
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| 500 nm |
37.90 |
43.80 |
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| 520 nm |
37.90 |
43.90 |
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| 540 nm |
37.60 |
43.60 |
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| 560 nm |
37.40 |
43.10 |
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| 580 nm |
36.90 |
42.60 |
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| 600 nm |
36.50 |
41.90 |
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| 620 nm |
36.20 |
41.50 |
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| 640 nm |
35.60 |
40.90 |
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| 660 nm |
35.40 |
40.20 |
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| 680 nm |
34.90 |
39.20 |
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| 700 nm |
34.20 |
38.10 |
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Calculated Relative Intensity Colors of Zoubekite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
240% |
250% |
| R1 |
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| R2 |
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Calculated Properties of Zoubekite
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| Electron Density: |
Bulk Density (Electron Density)=4.41 gm/cc
note: Specific Gravity of Zoubekite =5.21 gm/cc.
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| Fermion Index: |
Fermion Index = 0.1
Boson Index = 0.9 |
| Photoelectric: |
PEZoubekite = 975.46 barns/electron
U=PEZoubekite x rElectron Density=4,306.21 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zoubekite is Not Radioactive |
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Zoubekite Classification
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| Dana Class: |
03.05.14.01 (03)Sulfides - Sulfosalts |
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(03.05)where 2.5 < z/y < 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.05.14)Dana Group |
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03.05.14.01 Zoubekite AgPb4Sb4S10 Unk Ortho |
| Strunz Class: |
02.HC.35 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.H - Sulfosalts of SnS Archetype |
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02.HC -With only Pb |
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02.HC.35 Owyheeite Pb7Ag2(Sb,Bi)8S20 Pnam 2/m 2/m 2/m |
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02.HC.35 Zoubekite AgPb4Sb4S10 Unk Ortho |
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Other Zoubekite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Zoubekite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
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Print or Cut-and-Paste your Zoubekite Specimen Label here :
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Zoubekite
AgPb4Sb4S10
Dana No: 03.05.14.01 Strunz No: 02.HC.35
Locality:
Notes:
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