Menshikovite Mineral Data

General Menshikovite Information

Chemical Formula:

Pd3Ni2As3

Composition:

Molecular Weight = 661.40 gm

Nickel 17.75 % Ni

Arsenic 33.98 % As

Palladium 48.27 % Pd

______

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

Menshikovite Image

Images:

Click Here for Larger Menshikovite Image

Menshikovite Paolovite

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

Menshikovite Crystallography

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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),

Physical Properties of Menshikovite

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

Optical Properties of Menshikovite

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	∑ R₁(λ)	∑ R₂(λ)
470 nm	48.40	50.20
546 nm	51.20	53.20
589 nm	53.20	55.30
650 nm	56.60	58.70

**Standardized Intensity (100%) Reflection Spectra of Menshikovite in Oil**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	38.50	39.30
546 nm	41.00	41.80
589 nm	42.30	43.30
650 nm	46.60	47.80

**Calculated Relative Intensity Colors of Menshikovite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%	180%	190%
R₁
R₂

**Calculated Relative Intensity Colors of Menshikovite in Oil**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	230%
R₁
R₂

Calculated Properties of Menshikovite

Electron Density:

Bulk Density (Electron Density)=9.44 gm/cc
note: Specific Gravity of Menshikovite =10.7 gm/cc.

Fermion Index:

Fermion Index = 0.1
Boson Index = 0.9

Photoelectric:

PE_Menshikovite= 146.48 barns/electron
U=PE_Menshikovite x rElectron Density=1,382.12 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Menshikovite is Not Radioactive

Menshikovite Classification

Dana Class:

02.04.16.02 (02)Sulfides - Including Selenides and Tellurides

(02.04)where Am Bn Xp, with (m+n):p=2:1

(02.04.16)Dana Group

02.04.16.01 Majakite PdNiAs Unk Hex

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

02.A - Simple Sulfides, Selenides, etc

02.AC -Alloys of metalloids with PGE

02.AC.20c Menshikovite! Pd3Ni2As3 P 6₃/m,P 6₃, or P 6₃22 Hex

Other Menshikovite Information

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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Ask about Menshikovite here :
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Print or Cut-and-Paste your Menshikovite Specimen Label here :

Menshikovite

Pd3Ni2As3
Dana No: 02.04.16.02 Strunz No: 02.AC.20c
Locality:

Notes: