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Palarstanide Mineral Data
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General Palarstanide Information
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 Chemical Formula: |
Pd8(Sn,As)3 |
| Composition: |
Molecular Weight = 1,141.81 gm |
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Tin 15.60 % Sn |
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Arsenic 9.84 % As |
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Palladium 74.56 % Pd |
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______ |
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100.00 % |
| Empirical Formula: |
Pd8Sn1.5As1.5 |
| Environment: |
Intergrown wiith other minerals in massive ores of cubanite, chalcopyrite, and talnakhite. |
| IMA Status: |
Approved IMA 1981 |
| Locality: |
Talnakh, Norilsk, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for its composition (Palladium, Arsenic, Stannum(tin)). |
| Name Pronunciation: |
Palarstanide + Pronunciation  |
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Palarstanide Image |
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Images:
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Palarstanide Atokite
Comments: Polished Section (PPL) showing light gray euhedral palarstanide (P) surrounded by white atokite (A) in light brownish cubanite (C).
Location: Talnakh, Ural, Russia.
Scale: Picture Size 0.14 mm.
© Thomas Witzke |
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Palarstanide Crystallography
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| Axial Ratios: |
a:c = 1:2.1816 |
| Cell Dimensions: |
a = 6.784, c = 14.8, Z = 4; V = 589.88 Den(Calc)= 12.86 |
| Crystal System: |
Hexagonal - Trapezohedral H-M Symbol (6 2 2) Space Group: P 6322 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.22(1), 1.986(0.4), 2.5(0.4), |
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Physical Properties of Palarstanide
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| Cleavage: |
{0001} Perfect |
| Color: |
Steel gray. |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Hexagonal - Six-sided crystal shape in cross-section or habit. |
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
| Hardness: |
5 - Apatite |
| Luster: |
Metallic |
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Optical Properties of Palarstanide
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| RL Anisotrophism: |
Slight, dark gray to brownish gray. |
| RL Color: |
Grayish white with a slight rose tint. |
| RL Pleochroism: |
Distinct in oil. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Palarstanide in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 420 nm |
46.00 |
49.20 |
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| 440 nm |
47.10 |
50.10 |
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| 460 nm |
48.10 |
51.10 |
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| 480 nm |
49.70 |
51.90 |
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| 500 nm |
50.80 |
52.80 |
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| 520 nm |
52.10 |
53.50 |
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| 540 nm |
53.20 |
54.50 |
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| 560 nm |
54.20 |
55.40 |
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| 580 nm |
55.10 |
56.40 |
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| 600 nm |
56.30 |
57.40 |
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| 620 nm |
57.20 |
58.30 |
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| 640 nm |
58.50 |
59.30 |
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| 660 nm |
59.30 |
60.10 |
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| 680 nm |
59.90 |
60.60 |
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| 700 nm |
60.00 |
61.00 |
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Calculated Relative Intensity Colors of Palarstanide in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
190% |
| R1 |
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| R2 |
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Calculated Properties of Palarstanide
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| Electron Density: |
Bulk Density (Electron Density)=11.1 gm/cc
note: Specific Gravity of Palarstanide =12.9 gm/cc.
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| Fermion Index: |
Fermion Index = 0.19
Boson Index = 0.81 |
| Photoelectric: |
PEPalarstanide = 237.97 barns/electron
U=PEPalarstanide x rElectron Density=2,639.97 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Palarstanide is Not Radioactive |
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Palarstanide Classification
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| Dana Class: |
02.03.03.02 (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.20b 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.20b Palarstanide Pd8(Sn,As)3 P 6322 6 2 2 |
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Other Palarstanide 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 Palarstanide :
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
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Palarstanide
Pd8(Sn,As)3
Dana No: 02.03.03.02 Strunz No: 02.AC.20b
Locality:
Notes:
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