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![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Miessiite Mineral Data
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General Miessiite Information
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Chemical Formula: |
Pd11Te2Se2 |
Composition: |
Molecular Weight = 1,589.46 gm |
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Tellurium 16.78 % Te |
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Palladium 73.78 % Pd |
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Selenium 9.44 % Se |
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______ |
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100.00 % |
Empirical Formula: |
Pd11.02Te2.09Se1.9 |
Environment: |
Discovered along with placer gold and PGM nuggets. Isomertieite group. |
IMA Status: |
Approved IMA 2006 (Dana # Added) |
Locality: |
Miessi (in Saami language, Miessijohka) River placers, Lemmenjoki area, Inari commune, Lapland, Finland. Link to MinDat.org Location Data. |
Name Origin: |
Named for the locality. |
Synonym: |
IMA2006-013 |
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Miessiite Image |
Images:
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Miessiite
Comments: B&W optical image of miessiite grain. (CanMin, v45:1221).
Location: Miessi River placers, Lemmenjoki area, Inari commune, Lapland, Finland..
Scale: See Image.
© Canadian Mineralogist |
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Miessiite Crystallography
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Cell Dimensions: |
a = 12.448, Z = 8; V = 1,928.85 Den(Calc)= 10.95 |
Crystal System: |
Isometric - Diploidal H-M Symbol (2/m 3) Space Group: F d3m |
X Ray Diffraction: |
By Intensity(I/Io): 2.197(1), 2.395(0.8), 1.271(0.3),1.305(0.25), 1.555(0.25), 1.875(0.25), 2.072(0.2), 2.543(0.2), |
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Physical Properties of Miessiite
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Color: |
Black, Silvery gray. |
Diaphaneity: |
Opaque |
Fracture: |
Malleable - Deforms rather than breaking apart with a hammer. |
Habit: |
Nuggets - Irregular lumps produced by stream transport of malleable metals. |
Hardness: |
2-2.5 - Gypsum-Finger Nail |
Luster: |
Metallic |
Streak: |
black |
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Optical Properties of Miessiite
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RL Anisotrophism: |
None. |
RL Bireflectance: |
None. |
RL Color: |
Light gray in air, pinkish gray in oil. |
RL Pleochroism: |
None. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Miessiite in Air
λ |
R |
![](../images/Reflect_scale_v.gif) |
∑ R(λ) |
400 nm |
44.30 |
![](../images/400nm.BMP) |
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420 nm |
45.65 |
![](../images/420nm.BMP) |
440 nm |
47.60 |
![](../images/440nm.BMP) |
460 nm |
48.65 |
![](../images/460nm.BMP) |
470 nm |
48.90 |
![](../images/470nm.BMP) |
480 nm |
49.10 |
![](../images/480nm.BMP) |
500 nm |
49.60 |
![](../images/500nm.BMP) |
520 nm |
50.30 |
![](../images/520nm.BMP) |
540 nm |
51.40 |
![](../images/540nm.BMP) |
546 nm |
51.60 |
![](../images/546nm.BMP) |
560 nm |
52.20 |
![](../images/560nm.BMP) |
580 nm |
53.30 |
![](../images/580nm.BMP) |
589 nm |
53.90 |
![](../images/589nm.BMP) |
600 nm |
54.60 |
![](../images/600nm.BMP) |
620 nm |
55.70 |
![](../images/620nm.BMP) |
640 nm |
56.50 |
![](../images/640nm.BMP) |
650 nm |
56.80 |
![](../images/650nm.BMP) |
660 nm |
57.10 |
![](../images/660nm.BMP) |
680 nm |
57.55 |
![](../images/680nm.BMP) |
700 nm |
58.30 |
![](../images/700nm.BMP) |
Standardized Intensity (100%) Reflection Spectra of Miessiite in Oil
λ |
R |
![](../images/Reflect_scale_v.gif) |
∑ R(λ) |
400 nm |
22.60 |
![](../images/400nm.BMP) |
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420 nm |
23.60 |
![](../images/420nm.BMP) |
440 nm |
26.50 |
![](../images/440nm.BMP) |
460 nm |
28.70 |
![](../images/460nm.BMP) |
470 nm |
29.50 |
![](../images/470nm.BMP) |
480 nm |
30.20 |
![](../images/480nm.BMP) |
500 nm |
30.80 |
![](../images/500nm.BMP) |
520 nm |
30.50 |
![](../images/520nm.BMP) |
540 nm |
31.20 |
![](../images/540nm.BMP) |
546 nm |
31.60 |
![](../images/546nm.BMP) |
560 nm |
32.45 |
![](../images/560nm.BMP) |
580 nm |
33.20 |
![](../images/580nm.BMP) |
589 nm |
33.70 |
![](../images/589nm.BMP) |
600 nm |
34.35 |
![](../images/600nm.BMP) |
620 nm |
35.10 |
![](../images/620nm.BMP) |
640 nm |
36.10 |
![](../images/640nm.BMP) |
650 nm |
36.65 |
![](../images/650nm.BMP) |
660 nm |
37.20 |
![](../images/660nm.BMP) |
680 nm |
37.80 |
![](../images/680nm.BMP) |
700 nm |
38.40 |
![](../images/700nm.BMP) |
Calculated Relative Intensity Colors of Miessiite in Air
Relative Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
190% |
R |
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Calculated Relative Intensity Colors of Miessiite in Oil
Relative Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
R |
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Calculated Properties of Miessiite
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Electron Density: |
Bulk Density (Electron Density)=9.37 gm/cc note: Specific Gravity of Miessiite =11.0 gm/cc. |
Fermion Index: |
Fermion Index = 0.18 Boson Index = 0.82 |
Photoelectric: |
PEMiessiite = 248.24 barns/electron U=PEMiessiite x rElectron Density=2,326.52 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Miessiite is Not Radioactive |
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Miessiite Classification
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Dana Class: |
02.16.02.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.16)with miscellaneous formulae |
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(02.16.02)Dana Group |
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02.16.02.01 Isomertieite Pd11Sb2As2 F d3m 4/m 3 2/m |
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02.16.02.02 Miessiite! Pd11Te2Se2 F d3m 2/m 3 |
Strunz Class: |
02.AC.15a 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.15a Isomertieite Pd11Sb2As2 F d3m 4/m 3 2/m |
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02.AC.15a Miessiite! Pd11Te2Se2 F d3m 2/m 3 |
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Other Miessiite Information
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References: |
NAME( CanMin, v45:1221) PHYS. PROP.(CanMin, v45:1221) OPTIC PROP.(CanMin, v45:1221) |
See Also: |
Links to other databases for Miessiite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Miessiite Specimen Label here :
Miessiite
Pd11Te2Se2
Dana No: 02.16.02.02 Strunz No: 02.AC.15a
Locality:
Notes:
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