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Menshikovite Mineral Data
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General Menshikovite Information
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 Chemical Formula: |
Pd3Ni2As3 |
| Composition: |
Molecular Weight = 661.40 gm |
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Nickel 17.75 % Ni |
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Arsenic 33.98 % As |
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Palladium 48.27 % Pd |
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______ |
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100.00 % |
| Empirical Formula: |
Pd3Ni2As3 |
| Environment: |
Associated with other PGM at the type locality. |
| IMA Status: |
Approved IMA 2000 (Dana # Added) |
| Locality: |
Lukkulaisvaara layered intrusion, Karelia, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Yurii P. Men'shikov (1934-) of the Geological Institute of the Kola Science Center, Apatity, Russia. |
| Synonym: |
IMA1993-057 |
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Menshikovite Image |
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Images:
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Paolovite Menshikovite
Comments: BSE image showing menshikovite (mnv), paolovite (plv), isomertieite (ism), cobaltite (cob), and chalcopyrite (ccp) with quartz (qtz) and a Fe-rich aluminosilicate (sil).
Location: Lower (exo)-contact of the Chiney intrusion in Siberia. (CanMin, v40:679).
Scale: See Image.
© Canadian Mineralogist |
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Menshikovite Crystallography
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| Axial Ratios: |
a:c = 1:0.8018 |
| Cell Dimensions: |
a = 8.406, c = 6.74, Z = 4; V = 412.45 Den(Calc)= 10.65 |
| Crystal System: |
Hexagonal Space Group: P 63/m,P 63, or P 6322 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.477(1)(202), 2.626(1)(112), 2.429(0.8)(300),1.818(0.7)(400), 1.978(0.7)(113), 1.781(0.7)(222), 2.283(0.7)(301), |
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Physical Properties of Menshikovite
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| Cleavage: |
None |
| Color: |
White. |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| Hardness: |
5 - Apatite |
| Luster: |
Metallic |
| Streak: |
gray |
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Optical Properties of Menshikovite
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| RL Anisotrophism: |
Weak mosaic-like, light gray to brownish gray. |
| RL Bireflectance: |
None. |
| RL Color: |
Pink with slight grayish tint. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Menshikovite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
48.40 |
50.20 |
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| 546 nm |
51.20 |
53.20 |
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| 589 nm |
53.20 |
55.30 |
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| 650 nm |
56.60 |
58.70 |
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Standardized Intensity (100%) Reflection Spectra of Menshikovite in Oil
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
38.50 |
39.30 |
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| 546 nm |
41.00 |
41.80 |
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| 589 nm |
42.30 |
43.30 |
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| 650 nm |
46.60 |
47.80 |
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Calculated Relative Intensity Colors of Menshikovite 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 Relative Intensity Colors of Menshikovite in Oil
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
230% |
| R1 |
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| R2 |
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Calculated Properties of Menshikovite
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| Electron Density: |
Bulk Density (Electron Density)=9.44 gm/cc
note: Specific Gravity of Menshikovite =10.7 gm/cc.
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| Fermion Index: |
Fermion Index = 0.1
Boson Index = 0.9 |
| Photoelectric: |
PEMenshikovite = 146.48 barns/electron
U=PEMenshikovite x rElectron Density=1,382.12 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Menshikovite is Not Radioactive |
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Menshikovite Classification
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| Dana Class: |
02.04.16.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.04)where Am Bn Xp, with (m+n):p=2:1 |
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(02.04.16)Dana Group |
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02.04.16.01 Majakite PdNiAs Unk Hex |
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02.04.16.02 Menshikovite! Pd3Ni2As3 P 63/m,P 63, or P 6322 Hex |
| Strunz Class: |
02.AC.20c 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.20c Menshikovite! Pd3Ni2As3 P 63/m,P 63, or P 6322 Hex |
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Other Menshikovite Information
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| References: |
NAME( AmMin, v 88, p 477) PHYS. PROP.(AmMin, v 86, p 939 and v 88, p 477) OPTIC PROP.(AmMin, v 88, p 477) |
| See Also: |
Links to other databases for Menshikovite :
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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Menshikovite
Pd3Ni2As3
Dana No: 02.04.16.02 Strunz No: 02.AC.20c
Locality:
Notes:
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