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Genkinite

Pictures (1 Images total)

Isoferroplatinum (weiß), Geversit (1), Stumpflit(2), Genkinit (3), Sperrylith (4), Tulameenit (5)
Views (File:
1576352269
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Isoferroplatinum (weiß), Geversit (1), Stumpflit(2), Genkinit (3), Sperrylith (4), Tulameenit (5)
Composite grain of Pt-Fe alloy (white rim; Pt65Fe30), geversite ~[PtSb2] (1, bluish), stumpflite ~[Pt(Sb,Bi)] (2, yellowish), genkinite ~[(Pt,Pd)4Sb3] (3, light brown), sperrylite (4), and tulameenite ~[Pt2CuFe] (5); Driekop Pipe, eastern Bushveld, South Africa; Polished section, reflected light, in oil. Concentrate, collected by Prof. E.F. Stumpfl in 1957. Pol. section No. 9408, Ramdohr collection, Heidelberg.
Copyright: Thomas Oberthür; Contribution: Oberthür
Collection: Pol. section No. 9408, Ramdohr collection, Heidelberg., Collection number: 9408
Location: Südafrika/Limpopo, Provinz/Bushveld Complex/Burgersfort/Sekhukhuneland/Driekop Mine
Mineral: Genkinite, Geversite, Isoferroplatinum, Sperrylite, Stumpflite, Tulameenite
Image: 1576352269
License: Usage for Mineralienatlas project only
Isoferroplatinum (weiß), Geversit (1), Stumpflit(2), Genkinit (3), Sperrylith (4), Tulameenit (5) (SNr: 9408)  W
Analysed with wavelength-dispersive X-ray WDS

Composite grain of Pt-Fe alloy (white rim; Pt65Fe30), geversite [PtSb2] (1, bluish), stumpflite [Pt(Sb,Bi)] (2, yellowish), genkinite [(Pt,Pd)4Sb3] (3, light brown), sperrylite (4), and tulameen...

Collection: Pol. section No. 9408, Ramdohr collection, Heidelberg.
Copyright: Thomas Oberthür
Contribution: Oberthür 2019-12-14
Locality: Driekop Mine / Sekhukhuneland / Burgersfort / Bushveld Complex / Limpopo, Provinz / Südafrika

Collectors Summary

Color blass braun oderbräunlich mit einem gelblich Farbton
Hardness (Mohs) 5.75
Crystal System tetragonal, P41212

Chemism

Chemical formula

(Pt,Pd)4Sb3

Chemical composition

Antimon, Palladium, Platin

Unit weight: 1056.9359 u; Number of atoms in the formula: 7

Info

Empirical formula:

(Pt0.75Pd0.25)4Sb3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Palladium

Pd

10.07

1

14.29

106.4210000

106.4210000

Antimony

Sb

34.56

3

42.86

121.7601000

365.2803000

Platinum

Pt

55.37

3

42.86

195.0782000

585.2346000

Analysis wt%

Pt : 41.86, Pd : 7.01, Rh : 8.23, Ni : 3.41, Sb : 38.96, PLT : 57.10 (Ref: Canadian Mineralogist 88)

Strunz 9th edition incl. updates

2.AC.35

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
A: Legierungen und legierungsartige Verbindungen
C: Verbindungen von Halbmetallen mit Platin-Gruppen-Elementen (PGE)
35:Genkinit-Gruppe

Lapis Classification

II/A.05-120

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
A: Legierungen und legierungsartige Verbindungen
5: mit Metallen der Platin-gruppe (v.a. Pd)

Classification by Hölzel

2.AC.480

2: SULFIDES
A: Alloys of Cu,Ag,Au,Ni,Pd with As,Sb,Bi,(Te)
C: With Pd
4: Genkinite Polarite-Group

Dana 8th edition

02.06.04.01

02: Sulfide Minerals
06: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=4:3
04: Genkinite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

blass braun oderbräunlich mit einem gelblich Farbton

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

tetragonal

Class (H-M)

422

Space Group number

92

Space Group

P41212

Cell parameters a (Å)

7.736

Cell parameters b (Å)

-

Cell parameters c (Å)

24.161

Cell parameters a/b or c/a

3.123

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volume (ų)

1445.932

X-Ray Powder Diffraction

3.020(90),
2.265(100),
2.146(40),
2.120(40),
1.934(60),
1.910(50),
0.904(50),
0.902(50)

XRD chart Genkinite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Hardness (Mohs)

5.75

VHN (Hardness Vickers)

640 (25g)

Density (g/cm³)

9.256 (berechnet)

9.71 ( ρ calc. Mineralienatlas )

Preface

Name from

Prof. Alexandr Dimitrievich Genkin (1920-2010), für wichtige Arbeiten auf dem Gebiet der Platingruppenminerale. Nachruf siehe Can. Mineral. 48 ( 2010) S.1317.

Author (Name, Year)

Cabri & Stewart & Laflamme & Szymanski, 1977

References

Canadian Mineralogist 15 (1977), 389

Other languages

German

Genkinit

Spanish

Genkinita

English

Genkinite

French

Genkinite

Russian

Генкинит

Simplified Chinese

四方锑铂矿

CNMNC (IMA)-Number

IMA 1976-051

CNMNC symbol

Symbol

Gki

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 7N71s_3RuEeA0hdXFZKFaQ
GUID (Global unique identifier) B3F5DEEC-D1FD-47B8-80D2-175715928569
Database ID 1357