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Chrisstanleyite Mineral Data
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General Chrisstanleyite Information
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 Chemical Formula: |
Ag2Pd3Se4 |
| Composition: |
Molecular Weight = 833.49 gm |
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Copper 3.13 % Cu |
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Silver 20.58 % Ag |
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Palladium 38.69 % Pd |
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Selenium 37.61 % Se |
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______ |
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100.00 % |
| Empirical Formula: |
Cu0.41Ag1.59Pd3.03Se3.97 |
| Environment: |
In calcite veins cutting limestones. |
| IMA Status: |
Approved IMA 1998 (Dana # Added) |
| Locality: |
Hope's Nose, northern side of Tor Bay, Torquay, Devon, England, United Kingdom. Link to MinDat.org Location Data. |
| Name Origin: |
For Dr. Chris J. Stanley (1954-) of The Natural History Museum in London, in recognition of his contributions to ore mineralogy. |
| Synonym: |
IMA1996-044 |
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Chrisstanleyite Image |
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Images:
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Chrisstanleyite Hakite
Comments: Polished section showing chrisstanleyite (chr) is present as a single grain intergrown with clausthalite (cl) and eucairite (eu). cp (chalcopyrite), ha (hakite), di (selenian digenite), bo (bornite). (CanMin, v43:689).
Location: Low-temperature selenium-rich assemblage at Predborice, Czech Republic.
Scale: See Image.
© Canadian Mineralogist |
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Images:
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Tischendorfite Tiemannite Chrisstanleyite
Comments: Polished section (PPL) showing tischendorfite (T, cream), clausthalite (Cl, off-white), tiemannite (Tie, gray), ankerite (black) and chrisstanleyite (C, greenish buff to pale brown).
Location: Eskaborner Stollen (Eskeborn Adit) at Tilkerode, Harz, Mountains, Germany. (CanMin v40:739).
Scale: Picture Size 275 µm.
© Canadian Mineralogist |
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Chrisstanleyite Crystallography
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| Axial Ratios: |
a:b:c =0.5488:1:0.6131 |
| Cell Dimensions: |
a = 5.676, b = 10.342, c = 6.341, Z = 2; beta = 114.996° V = 337.36 Den(Calc)= 8.20 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c |
| X Ray Diffraction: |
By Intensity(I/Io): 1.956(1), 2.742(1), 2.688(0.8), |
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Physical Properties of Chrisstanleyite
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| Color: |
Gray, Silvery gray. |
| Density: |
8.31 |
| Diaphaneity: |
Opaque |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
5 - Apatite |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Chrisstanleyite
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| RL Anisotrophism: |
Moderate. |
| RL Bireflectance: |
Weak. |
| RL Color: |
Very light buff to slightly gray-green. |
| RL Pleochroism: |
Slight. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Chrisstanleyite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
39.70 |
47.20 |
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| 546 nm |
43.10 |
48.80 |
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| 589 nm |
44.30 |
49.40 |
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| 650 nm |
44.40 |
49.20 |
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Standardized Intensity (100%) Reflection Spectra of Chrisstanleyite in Oil
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
26.20 |
34.40 |
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| 546 nm |
29.30 |
35.15 |
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| 589 nm |
30.40 |
35.55 |
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| 650 nm |
31.00 |
35.60 |
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Calculated Relative Intensity Colors of Chrisstanleyite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
230% |
| R1 |
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| R2 |
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Calculated Relative Intensity Colors of Chrisstanleyite in Oil
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
340% |
| R1 |
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| R2 |
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Calculated Properties of Chrisstanleyite
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| Electron Density: |
Bulk Density (Electron Density)=7.10 gm/cc
note: Specific Gravity of Chrisstanleyite =8.20 gm/cc.
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| Fermion Index: |
Fermion Index = 0.11
Boson Index = 0.89 |
| Photoelectric: |
PEChrisstanleyite = 179.59 barns/electron
U=PEChrisstanleyite x rElectron Density=1,275.56 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chrisstanleyite is Not Radioactive |
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Chrisstanleyite Classification
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| Dana Class: |
02.16.10.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.16)with miscellaneous formulae |
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(02.16.10)Chrisstanleyite Group |
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02.16.10.01 Sopcheite Ag4Pd3Te4 Unk Ortho |
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02.16.10.02 Chrisstanleyite! Ag2Pd3Se4 P 21/c 2/m |
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02.16.10.03 Jagueite! Cu2Pd3Se4 P 21/c 2/m |
| Strunz Class: |
02.BC.15 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.BC -With Rh, Pd, Pt, etc. |
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02.BC.15 Chrisstanleyite! Ag2Pd3Se4 P 21/c 2/m |
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02.BC.15 Jagueite! Cu2Pd3Se4 P 21/c 2/m |
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Other Chrisstanleyite Information
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| References: |
NAME( MinRec) PHYS. PROP.(AmMin, v91, p1952) OPTIC PROP.(MinRec, v 30, p 157) |
| See Also: |
Links to other databases for Chrisstanleyite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
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Print or Cut-and-Paste your Chrisstanleyite Specimen Label here :
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Chrisstanleyite
Ag2Pd3Se4
Dana No: 02.16.10.02 Strunz No: 02.BC.15
Locality:
Notes:
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