General Palladobismutharsenide Information
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Chemical Formula: |
Pd2(As,Bi) |
Composition: |
Molecular Weight = 314.57 gm |
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Bismuth 13.29 % Bi |
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Arsenic 19.05 % As |
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Palladium 67.66 % Pd |
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______ |
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100.00 % |
Empirical Formula: |
Pd2As0.8Bi0.2 |
Environment: |
Ultrabasic igneous intrusion. |
IMA Status: |
Approved IMA 1976 |
Locality: |
Stillwater complex, Nye County, Montana, USA. Link to MinDat.org Location Data. |
Name Origin: |
Named for the composition (Pd, Bi, As). |
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Search for Palladobismutharsenide Images |
Images:
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Palladobismutharsenide Crystallography
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Axial Ratios: |
a:b:c =0.3941:1:0.3587 |
Cell Dimensions: |
a = 7.467, b = 18.946, c = 6.797, Z = 20; V = 961.57 Den(Calc)= 10.86 |
Crystal System: |
OrthorhombicSpace Group: Pmcn,P 21cn |
X Ray Diffraction: |
By Intensity(I/Io): 2.232(1), 2.083(0.9), 2.485(0.9), |
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Physical Properties of Palladobismutharsenide
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Color: |
Silver white. |
Density: |
10.86 |
Diaphaniety: |
Opaque |
Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
Hardness: |
5 - Apatite |
Luster: |
Metallic |
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Optical Properties of Palladobismutharsenide
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RL Anisotrophism: |
Weak to distinct, in air from gray to extinction; under oil varying from gray to brownish gray. |
RL Color: |
Creamy. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Palladobismutharsenide in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
53.60 |
54.50 |

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| 546 nm |
52.10 |
53.00 |

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| 589 nm |
53.60 |
54.60 |

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| 650 nm |
55.80 |
56.10 |

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Calculated Relative Intensity Colors of Palladobismutharsenide in Air
Relative Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
170% |
| R1 |
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| R2 |
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Calculated Properties of Palladobismutharsenide
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Electron Density: |
relectron=9.32 gm/cc note: rPalladobismutharsenide =10.9 gm/cc. |
Fermion Index |
Fermion Index = 0.15108 Boson Index = 0.84892 |
Photoelectric: |
PEPalladobismutharsenide = 428.37 barns/electron U=PEPalladobismutharsenide x relectron=3,992.90 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Palladobismutharsenide is Not Radioactive |
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Palladobismutharsenide Classification
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Dana Class: |
2.4.15.1 (2)Sulfides - Including Selenides and Tellurides |
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(2.4)where Am Bn Xp, with (m+n):p=2:1 |
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(2.4.15)Dana Group |
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2.4.15.1 Palladobismutharsenide Pd2(As,Bi) Pmcn,P 21cn Ortho |
Strunz Class: |
II/A.05-100 II - Sulfides and sulphosalts |
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II/A - Alloys and alloylike compounds, with metals of the Platinum series, (Palladium) |
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II/A.05 - Atheneite - Genkinite series |
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II/A.05-10 Atheneite (Pd,Hg)3As P 6/mmm 6/m 2/m 2/m |
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II/A.05-20 Vincentite (Pd,Pt)3(As,Sb,Te) Unk Mono |
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II/A.05-30 Stillwaterite Pd8As3 P 3 3 |
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II/A.05-40 Arsenopalladinite Pd8(As,Sb)3 P1 1 |
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II/A.05-50 Isomertieite Pd11Sb2As2 F d3m 4/m 3 2/m |
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II/A.05-60 Mertieite-I Pd11(Sb,As)4 Unk Hex |
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II/A.05-70 Mertieite-II Pd8(Sb,As)3 R 3c 3m |
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II/A.05-80 Stibiopalladinite Pd5Sb2 P 63mc 6mm |
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II/A.05-90 Palladoarsenide Pd2As P 2/m 2/m |
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II/A.05-100 Palladobismutharsenide Pd2(As,Bi) Pmcn,P 21cn Ortho |
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II/A.05-102 Palladodymite! (Pd,Rh)2As P nma 2/m 2/m 2/m |
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II/A.05-105 Rhodarsenide! (Rh,Pd)2As P nma or Pn2 Ortho |
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II/A.05-110 Majakite PdNiAs Unk Hex |
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II/A.05-112 Menshikovite! Pd3Ni2As3 P 63/m,P 63, or P 6322 Hex |
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II/A.05-115 Polkanovite! Rh12As7 P 63m 6/m |
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II/A.05-120 Genkinite (Pt,Pd)4Sb3 P 41212 4 2 2 |
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Other Palladobismutharsenide 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 Palladobismutharsenide :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 -Google Images
4 -Google Scholar
5 -MinDAT
6 -MinMax(Deutsch)
7 -MinMax(English)
8 -Mineralienatlas (Deutsch)
9 -QUT Mineral Atlas
10 -École des Mines de Paris
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Print or Cut-and-Paste your Palladobismutharsenide Specimen Label here :
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Palladobismutharsenide
Pd2(As,Bi)
Dana No: 2.4.15.1 Strunz No: II/A.05-100
Locality:
Notes:
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