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Verbeekite Mineral Data
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General Verbeekite Information
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 Chemical Formula: |
PdSe2 |
| Composition: |
Molecular Weight = 264.34 gm |
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Palladium 40.26 % Pd |
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Selenium 59.74 % Se |
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______ |
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100.00 % |
| Empirical Formula: |
PdSe2 |
| Environment: |
Se-rich sulfide lens. Replaced by oosterboschite. |
| IMA Status: |
Approved IMA 2001 (Dana # Added) |
| Locality: |
Musonoi mine, near Kolwezi, Shaba Province, Democratic Republic of Congo (formerly Zaire). Link to MinDat.org Location Data. |
| Name Origin: |
Named for Theodore Verbeek (1927-1991) who did the original studies on the Se-bearing lens. |
| Synonym: |
IMA2001-005 |
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Verbeekite Crystallography
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| Axial Ratios: |
a:b:c =1.6122:1:1.0753 |
| Cell Dimensions: |
a = 6.657, b = 4.129, c = 4.44, Z = 2; beta = 92.83° V = 121.89 Den(Calc)= 7.20 |
| Crystal System: |
Monoclinic Space Group: C 2, Cm, or C 2/m |
| X Ray Diffraction: |
By Intensity(I/Io): 2.718(1)(111), 1.896(0.5)(112), 1.955(0.5)(310),3.496(0.3)(110), 4.423(0.3)(001), 1.815(0.2), 2.063(0.2), |
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Physical Properties of Verbeekite
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| Color: |
Black. |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| Hardness: |
5.5 - Knife Blade |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Verbeekite
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| RL Anisotrophism: |
Moderate with brown rotation tints. |
| RL Bireflectance: |
Negligible. |
| RL Color: |
Gray. |
| RL Pleochroism: |
None. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Verbeekite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
50.80 |
52.30 |
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| 546 nm |
51.85 |
52.90 |
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| 589 nm |
52.20 |
53.55 |
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| 650 nm |
52.40 |
54.00 |
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Standardized Intensity (100%) Reflection Spectra of Verbeekite in Oil
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
37.00 |
38.40 |
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| 546 nm |
37.75 |
38.30 |
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| 589 nm |
38.50 |
38.60 |
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| 650 nm |
38.80 |
39.60 |
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Calculated Relative Intensity Colors of Verbeekite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
| R1 |
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| R2 |
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Calculated Relative Intensity Colors of Verbeekite in Oil
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
240% |
| R1 |
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| R2 |
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Calculated Properties of Verbeekite
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| Electron Density: |
Bulk Density (Electron Density)=6.21 gm/cc
note: Specific Gravity of Verbeekite =7.20 gm/cc.
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| Fermion Index: |
Fermion Index = 0.13
Boson Index = 0.87 |
| Photoelectric: |
PEVerbeekite = 146.29 barns/electron
U=PEVerbeekite x rElectron Density= 908.47 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Verbeekite is Not Radioactive |
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Verbeekite Classification
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| Dana Class: |
02.12.15.03 (02)Sulfides - Including Selenides and Tellurides |
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(02.12)where Am Bn Xp, with (m+n):p=1:2 |
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(02.12.15)Dana Group |
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02.12.15.01 Froodite PdBi2 C 2/m 2/m |
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02.12.15.02 Urvantsevite Pd(Bi,Pb)2 I 4/mmm 4/m 2/m 2/m |
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02.12.15.03 Verbeekite! PdSe2 C 2, Cm, or C 2/m Mono |
| Strunz Class: |
02.EA.25 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.E - Metal Sulfides, M:S � 1:2 |
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02.EA -M:S = 1:2 |
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02.EA.25 Verbeekite! PdSe2 C 2, Cm, or C 2/m Mono |
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Other Verbeekite Information
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| References: |
NAME( AmMin, Vol 88, p 253) PHYS. PROP.(AmMin, Vol 88, p 253) OPTIC PROP.(AmMin, Vol 88, p 253) |
| See Also: |
Links to other databases for Verbeekite :
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 Verbeekite Specimen Label here :
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Verbeekite
PdSe2
Dana No: 02.12.15.03 Strunz No: 02.EA.25
Locality:
Notes:
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