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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Search for Menshikovite Images |
Images:
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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: |
HexagonalSpace 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. |
Diaphaniety: |
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: |
relectron=9.44 gm/cc note: rMenshikovite =10.7 gm/cc. |
Fermion Index |
Fermion Index = 0.10979 Boson Index = 0.89021 |
Photoelectric: |
PEMenshikovite = 146.48 barns/electron U=PEMenshikovite x relectron=1,382.12 barns/cc. |
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: |
2.4.16.2 (2)Sulfides - Including Selenides and Tellurides |
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(2.4)where Am Bn Xp, with (m+n):p=2:1 |
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(2.4.16)Dana Group |
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2.4.16.1 Majakite PdNiAs Unk Hex |
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2.4.16.2 Menshikovite ! Pd3Ni2As3 P 63/m,P 63, or P 6322 Hex |
Strunz Class: |
II/A.05-112 II - Sulfides and sulphosalts |
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II/A - Alloys and alloylike compounds, with metals of the Platinum series, (Palladium) |
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II/A.05 - Atheneite - Genkinite series |
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II/A.05-10 Atheneite (Pd,Hg)3As P 6/mmm 6/m 2/m 2/m |
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II/A.05-20 Vincentite (Pd,Pt)3(As,Sb,Te) Unk Mono |
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II/A.05-30 Stillwaterite Pd8As3 P 3 3 |
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II/A.05-40 Arsenopalladinite Pd8(As,Sb)3 P1 1 |
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II/A.05-50 Isomertieite Pd11Sb2As2 F d3m 4/m 3 2/m |
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II/A.05-60 Mertieite-I Pd11(Sb,As)4 Unk Hex |
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II/A.05-70 Mertieite-II Pd8(Sb,As)3 R 3c 3m |
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II/A.05-80 Stibiopalladinite Pd5Sb2 P 63mc 6mm |
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II/A.05-90 Palladoarsenide Pd2As P 2/m 2/m |
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II/A.05-100 Palladobismutharsenide Pd2(As,Bi) Pmcn,P 21cn Ortho |
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II/A.05-102 Palladodymite! (Pd,Rh)2As P nma 2/m 2/m 2/m |
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II/A.05-105 Rhodarsenide! (Rh,Pd)2As P nma or Pn2 Ortho |
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II/A.05-110 Majakite PdNiAs Unk Hex |
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II/A.05-112 Menshikovite Pd3Ni2As3 P 63/m,P 63, or P 6322 Hex |
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II/A.05-115 Polkanovite! Rh12As7 P 63m 6/m |
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II/A.05-120 Genkinite (Pt,Pd)4Sb3 P 41212 4 2 2 |
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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 -Google Images
4 -Google Scholar
5 -Handbook of Mineralogy (UofA)
6 -MinDAT
7 -MinMax(Deutsch)
8 -MinMax(English)
9 -Mineralienatlas (Deutsch)
10 -QUT Mineral Atlas
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Print or Cut-and-Paste your Menshikovite Specimen Label here :
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Menshikovite
Pd3Ni2As3
Dana No: 2.4.16.2 Strunz No: II/A.05-112
Locality:
Notes:
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