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Shadlunite Mineral Data
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General Shadlunite Information
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 Chemical Formula: |
(Pb,Cd)(Fe,Cu)8S8 |
| Composition: |
Molecular Weight = 902.20 gm |
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Cadmium 3.11 % Cd |
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Iron 37.14 % Fe |
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Copper 14.09 % Cu |
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Lead 17.22 % Pb |
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Sulfur 28.43 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Pb0.75Cd0.25Fe2+6Cu2S8 |
| Environment: |
As tiny grains and veinlets cutting Cu-Ni ores. |
| IMA Status: |
Approved IMA 1973 |
| Locality: |
Majak (Mayak) and Oktyaber mines, Talnakh area, Noril'sk, western Siberia, Russia Link to MinDat.org Location Data. |
| Name Origin: |
Named for Tatanya Shadlun, Russian researcher on ore minerals. |
| Name Pronunciation: |
Shadlunite + Pronunciation  |
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Shadlunite Image |
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Images:
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Shadlunite Crystallography
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| Cell Dimensions: |
a = 10.91, Z = 4; V = 1,298.60 Den(Calc)= 4.61 |
| Crystal System: |
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.29(1), 1.925(0.9), 3.84(0.4), |
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Physical Properties of Shadlunite
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| Color: |
Bronze. |
| Diaphaneity: |
Opaque |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Habit: |
Twinning Common - Crystals are usually twinned. |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
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Optical Properties of Shadlunite
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| RL Anisotrophism: |
Weak. |
| RL Color: |
Grayish yellow. |
| RL Pleochroism: |
Weak. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Shadlunite in Air
| λ |
R |
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∑ R(λ) |
| 440 nm |
18.00 |
 |
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| 460 nm |
19.50 |
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| 480 nm |
20.80 |
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| 500 nm |
22.00 |
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| 520 nm |
23.40 |
 |
| 540 nm |
24.50 |
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| 560 nm |
25.80 |
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| 580 nm |
26.90 |
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| 600 nm |
27.70 |
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| 620 nm |
28.70 |
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| 640 nm |
29.30 |
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| 660 nm |
30.20 |
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| 680 nm |
30.80 |
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| 700 nm |
31.20 |
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Calculated Relative Intensity Colors of Shadlunite in Air
Relative
Intensity |
0% |
50% |
100% |
150% |
200% |
250% |
300% |
350% |
400% |
450% |
| R |
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Calculated Properties of Shadlunite
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| Electron Density: |
Bulk Density (Electron Density)=4.25 gm/cc
note: Specific Gravity of Shadlunite =4.61 gm/cc.
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| Fermion Index: |
Fermion Index = 0.05
Boson Index = 0.95 |
| Photoelectric: |
PEShadlunite = 314.94 barns/electron
U=PEShadlunite x rElectron Density=1,337.30 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Shadlunite is Not Radioactive |
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Shadlunite Classification
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| Dana Class: |
02.07.01.04 (02)Sulfides - Including Selenides and Tellurides |
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(02.07)where Am Bn Xp, with (m+n):p=9:8 |
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(02.07.01)Pentalndite Group (Isometric: Fm3m) |
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02.07.01.01 Pentlandite (Fe,Ni)9S8 F m3m 4/m 3 2/m |
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02.07.01.02 Argentopentlandite Ag(Fe,Ni)8S8 F m3m 4/m 3 2/m |
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02.07.01.03 Cobaltpentlandite Co9S8 F m3m 4/m 3 2/m |
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02.07.01.04 Shadlunite (Pb,Cd)(Fe,Cu)8S8 F m3m 4/m 3 2/m |
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02.07.01.05 Manganoshadlunite (Mn,Pb)(Cu,Fe)8S8 F m3m 4/m 3 2/m |
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02.07.01.06 Geffroyite (Ag,Cu,Fe)9(Se,S)8 F m3m 4/m 3 2/m |
| Strunz Class: |
02.BB.15a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1) |
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02.BB -With Ni, Fe |
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02.BB.15a Argentopentlandite Ag(Fe,Ni)8S8 F m3m 4/m 3 2/m |
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02.BB.15a Cobaltpentlandite Co9S8 F m3m 4/m 3 2/m |
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02.BB.15a Geffroyite (Ag,Cu,Fe)9(Se,S)8 F m3m 4/m 3 2/m |
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02.BB.15a Manganoshadlunite (Mn,Pb)(Cu,Fe)8S8 F m3m 4/m 3 2/m |
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02.BB.15a Pentlandite (Fe,Ni)9S8 F m3m 4/m 3 2/m |
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02.BB.15a Shadlunite (Pb,Cd)(Fe,Cu)8S8 F m3m 4/m 3 2/m |
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Other Shadlunite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Shadlunite :
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
15 - WWW-MINCRYST
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Shadlunite
(Pb,Cd)(Fe,Cu)8S8
Dana No: 02.07.01.04 Strunz No: 02.BB.15a
Locality:
Notes:
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