Mineralogy Database

Stibiopalladinite Mineral Data

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General Stibiopalladinite Information

Help on Chemical  Formula: Chemical Formula: Pd5Sb2
Help on Composition: Composition: Molecular Weight = 775.60 gm
   Antimony   31.40 %  Sb
   Palladium  68.60 %  Pd
             100.00 % 
Help on Empirical Formula: Empirical Formula: Pd5Sb2
Help on Environment: Environment: An uncommon constituent of platinum deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1929
Help on Locality: Locality: Tweefontein Farm, Potgietersrust district, Bushveld Complex, Transvaal, South Africa. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition.
Help on Name Pronunciation: Name Pronunciation: Stibiopalladinite + Pronunciation Say STIBIOPALLADINITE
Help on Synonym: Synonym: ICSD 42680
  PDF 25-597

Stibiopalladinite Image

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Comments: Gray metallic stibiopalladinite, with bronze tarnish, flattened crystal grains.
Location: Choco, Columbia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Stibiopalladinite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.86826
Help on Cell Dimensions: Cell Dimensions: a = 7.606, c = 14.21, Z = 6; V = 711.93 Den(Calc)= 10.85
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Pyramidal H-M Symbol (6mm) Space Group: P 63mc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.194(1), 2.27(1), 1.577(0.5),

Physical Properties of Stibiopalladinite

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Steel gray, Silver gray, Silver white.
Help on Density: Density: 9.5
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Hexagonal - Six-sided crystal shape in cross-section or habit.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: black

Optical Properties of Stibiopalladinite

Help on RL Anisotrophism: RL Anisotrophism: Distinct, colors usually lacking but some grains are purplish gray to greenish gray.
Help on RL Color: RL Color: Yellowish white.
Help on RL Pleochroism: RL Pleochroism: Weak, in pale yellow to yellowish white, also sometimes faint greenish, pinkish, or lavender.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Stibiopalladinite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   39.90   40.60 
 420 nm   42.20   43.40 
 440 nm   44.50   46.20 
 460 nm   46.60   48.50 
 480 nm   48.40   50.40 
 500 nm   50.00   52.00 
 520 nm   51.40   53.20 
 540 nm   52.50   54.20 
 560 nm   53.50   54.80 
 580 nm   54.40   55.20 
 600 nm   55.40   55.60 
 620 nm   56.40   56.00 
 640 nm   57.40   56.60 
 660 nm   58.60   57.10 
 680 nm   59.70   57.60 
 700 nm   61.00   58.30 
Calculated Relative Intensity Colors of Stibiopalladinite in Air
   0%   30%   60%   90% 100% 120% 150% 180% 200%

Calculated Properties of Stibiopalladinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=9.29 gm/cc
note: Specific Gravity of Stibiopalladinite =10.9 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.15
Boson Index = 0.85
Help on Photoelectric: Photoelectric: PEStibiopalladinite = 275.48 barns/electron
U=PEStibiopalladinite x rElectron Density=2,558.88 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stibiopalladinite is Not Radioactive

Stibiopalladinite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.03)where Am Bn Xp, with (m+n):p=5:2
  (02.03.03)Dana Group Stibiopalladinite Pd5Sb2 P 63mc 6mm Palarstanide Pd8(Sn,As)3 P 6322 6 2 2
Help on  Strunz Class: Strunz Class: 02.AC.20a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.A - Simple Sulfides, Selenides, etc
  02.AC -Alloys of metalloids with PGE
02.AC.20a Stibiopalladinite Pd5Sb2 P 63mc 6mm

Other Stibiopalladinite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: 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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Dana No: Strunz No: 02.AC.20a





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