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Stibiopalladinite Mineral Data
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General Stibiopalladinite Information
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 Chemical Formula: |
Pd5Sb2 |
| Composition: |
Molecular Weight = 775.60 gm |
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Antimony 31.40 % Sb |
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Palladium 68.60 % Pd |
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______ |
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100.00 % |
| Empirical Formula: |
Pd5Sb2 |
| Environment: |
An uncommon constituent of platinum deposits. |
| IMA Status: |
Valid Species (Pre-IMA) 1929 |
| Locality: |
Tweefontein Farm, Potgietersrust district, Bushveld Complex, Transvaal, South Africa. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the composition. |
| Name Pronunciation: |
Stibiopalladinite + Pronunciation  |
| Synonym: |
ICSD 42680 |
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PDF 25-597 |
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Stibiopalladinite Image |
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Images:
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Stibiopalladinite Crystallography
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| Axial Ratios: |
a:c = 1:1.86826 |
| Cell Dimensions: |
a = 7.606, c = 14.21, Z = 6; V = 711.93 Den(Calc)= 10.85 |
| Crystal System: |
Hexagonal - Dihexagonal Pyramidal H-M Symbol (6mm) Space Group: P 63mc |
| X Ray Diffraction: |
By Intensity(I/Io): 2.194(1), 2.27(1), 1.577(0.5), |
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Physical Properties of Stibiopalladinite
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| Cleavage: |
{???} Indistinct |
| Color: |
Steel gray, Silver gray, Silver white. |
| Density: |
9.5 |
| Diaphaneity: |
Opaque |
| Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
| Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
| Habit: |
Hexagonal - Six-sided crystal shape in cross-section or habit. |
| Habit: |
Tabular - Form dimensions are thin in one direction. |
| Hardness: |
4-5 - Fluorite-Apatite |
| Luminescence: |
Non-fluorescent. |
| Luster: |
Metallic |
| Magnetism: |
Nonmagnetic |
| Streak: |
black |
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Optical Properties of Stibiopalladinite
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| RL Anisotrophism: |
Distinct, colors usually lacking but some grains are purplish gray to greenish gray. |
| RL Color: |
Yellowish white. |
| RL Pleochroism: |
Weak, in pale yellow to yellowish white, also sometimes faint greenish, pinkish, or lavender. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Stibiopalladinite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
39.90 |
40.60 |
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| 420 nm |
42.20 |
43.40 |
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| 440 nm |
44.50 |
46.20 |
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| 460 nm |
46.60 |
48.50 |
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| 480 nm |
48.40 |
50.40 |
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| 500 nm |
50.00 |
52.00 |
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| 520 nm |
51.40 |
53.20 |
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| 540 nm |
52.50 |
54.20 |
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| 560 nm |
53.50 |
54.80 |
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| 580 nm |
54.40 |
55.20 |
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| 600 nm |
55.40 |
55.60 |
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| 620 nm |
56.40 |
56.00 |
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| 640 nm |
57.40 |
56.60 |
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| 660 nm |
58.60 |
57.10 |
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| 680 nm |
59.70 |
57.60 |
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| 700 nm |
61.00 |
58.30 |
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Calculated Relative Intensity Colors of Stibiopalladinite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
200% |
| R1 |
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| R2 |
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Calculated Properties of Stibiopalladinite
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| Electron Density: |
Bulk Density (Electron Density)=9.29 gm/cc
note: Specific Gravity of Stibiopalladinite =10.9 gm/cc.
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| Fermion Index: |
Fermion Index = 0.15
Boson Index = 0.85 |
| Photoelectric: |
PEStibiopalladinite = 275.48 barns/electron
U=PEStibiopalladinite x rElectron Density=2,558.88 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stibiopalladinite is Not Radioactive |
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Stibiopalladinite Classification
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| Dana Class: |
02.03.03.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.03)where Am Bn Xp, with (m+n):p=5:2 |
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(02.03.03)Dana Group |
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02.03.03.01 Stibiopalladinite Pd5Sb2 P 63mc 6mm |
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02.03.03.02 Palarstanide Pd8(Sn,As)3 P 6322 6 2 2 |
| Strunz Class: |
02.AC.20a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.A - Simple Sulfides, Selenides, etc |
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02.AC -Alloys of metalloids with PGE |
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02.AC.20a Stibiopalladinite Pd5Sb2 P 63mc 6mm |
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Other Stibiopalladinite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Stibiopalladinite :
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 Stibiopalladinite Specimen Label here :
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Stibiopalladinite
Pd5Sb2
Dana No: 02.03.03.01 Strunz No: 02.AC.20a
Locality:
Notes:
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