Genkinite Mineral Data

Genkinite Mineral Data +

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General Genkinite Information

Chemical Formula:

(Pt,Pd)4Sb3

Composition:

Molecular Weight = 1,056.91 gm

Antimony 34.56 % Sb

Palladium 10.07 % Pd

Platinum 55.37 % Pt

______

100.00 %

Empirical Formula:

Pt₃PdSb₃

Environment:

In ultramafics or ophiolites mineralized with Pt-Fe-Cu-Ni, and placers derived for them.

IMA Status:

Approved IMA 1977

Locality:

In the Onverwacht and Driekop mines, Transvaal, South Africa. Link to MinDat.org Location Data.

Name Origin:

For Dr. A.D. Genkin, Soviet mineralogist.

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Genkinite Crystallography

Axial Ratios:

a:c = 1:3.12319

Cell Dimensions:

a = 7.736, c = 24.161, Z = 8; V = 1,445.93 Den(Calc)= 9.71

Crystal System:

Tetragonal - TrapezohedralH-M Symbol (4 2 2) Space Group: P 4₁2₁2

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

By Intensity(I/I_o): 2.265(1), 3.02(0.9), 1.934(0.6),

Physical Properties of Genkinite

Color:

Gray.

Density:

8.83

Diaphaniety:

Opaque

Hardness:

5.5-6 - Knife Blade-Orthoclase

Luster:

Metallic

Optical Properties of Genkinite

RL Anisotrophism:

Moderate to strong, from gray to extinction.

RL Color:

Pale brown or tan with a yellowish tinge.

RL Pleochroism:

Weak in oil for some grains.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Genkinite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	41.10	42.10
420 nm	43.00	44.00
440 nm	44.90	45.90
460 nm	46.60	47.30
480 nm	48.00	48.50
500 nm	49.00	49.50
520 nm	50.00	50.30
540 nm	50.80	51.10
560 nm	51.60	52.00
580 nm	52.50	53.00
600 nm	53.60	54.00
620 nm	54.40	55.10
640 nm	55.10	56.10
660 nm	55.70	56.90
680 nm	56.20	57.40
700 nm	56.60	57.30

**Calculated Relative Intensity Colors of Genkinite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	200%
R₁
R₂

Calculated Properties of Genkinite

Electron Density:

r_electron=7.96 gm/cc
note: r_Genkinite=9.71 gm/cc.

Fermion Index

Fermion Index = 0.20964
Boson Index = 0.79036

Photoelectric:

PE_Genkinite=1,025.11 barns/electron
U=PE_Genkinite x r_electron=8,155.85 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Genkinite is Not Radioactive

Genkinite Classification

Dana Class:

2.6.4.1 (2)Sulfides - Including Selenides and Tellurides

(2.6)where Am Bn Xp, with (m+n):p=4:3

(2.6.4)Dana Group

2.6.4.1 Genkinite (Pt,Pd)4Sb3 P 4₁2₁2 4 2 2

2.6.4.2 Oulankaite! (Pd,Pt)5(Cu,Fe)4SnTe2S2 Tetra

2.6.4.3 IMA2004-020! Pd4Sb3 P 4₁2₁2, P 4₁22, P 4₃2₁2 4 2 2

Strunz Class:

II/A.05-120 II - Sulfides and sulphosalts

II/A - Alloys and alloylike compounds, with metals of the Platinum series, (Palladium)

II/A.05 - Atheneite - Genkinite series

II/A.05-10 Atheneite (Pd,Hg)3As P 6/mmm 6/m 2/m 2/m

II/A.05-20 Vincentite (Pd,Pt)3(As,Sb,Te) Unk Mono

II/A.05-30 Stillwaterite Pd8As3 P 3 3

II/A.05-40 Arsenopalladinite Pd8(As,Sb)3 P1 1

II/A.05-50 Isomertieite Pd11Sb2As2 F d3m 4/m 3 2/m

II/A.05-60 Mertieite-I Pd11(Sb,As)4 Unk Hex

II/A.05-70 Mertieite-II Pd8(Sb,As)3 R 3c 3m

II/A.05-80 Stibiopalladinite Pd5Sb2 P 6₃mc 6mm

II/A.05-90 Palladoarsenide Pd2As P 2/m 2/m

II/A.05-100 Palladobismutharsenide Pd2(As,Bi) Pmcn,P 2₁cn Ortho

II/A.05-102 Palladodymite! (Pd,Rh)2As P nma 2/m 2/m 2/m

II/A.05-105 Rhodarsenide! (Rh,Pd)2As P nma or Pn2 Ortho

II/A.05-110 Majakite PdNiAs Unk Hex

II/A.05-112 Menshikovite! Pd3Ni2As3 P 6₃/m,P 6₃, or P 6₃22 Hex

II/A.05-115 Polkanovite! Rh12As7 P 6₃m 6/m

II/A.05-120 Genkinite (Pt,Pd)4Sb3 P 4₁2₁2 4 2 2

Other Genkinite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Genkinite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Print or Cut-and-Paste your Genkinite Specimen Label here :

Genkinite

(Pt,Pd)4Sb3
Dana No: 2.6.4.1 Strunz No: II/A.05-120
Locality:

Notes: