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Stumpflite

Pictures (1 Images total)

Isoferroplatinum (weiß), Geversit (1), Stumpflit(2), Genkinit (3), Sperrylith (4), Tulameenit (5)
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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 cremfarben
Hardness (Mohs) 5
Crystal System hexagonal, P63/mmc

Chemism

Chemical formula

Pt(Sb,Bi)

Chemical composition

Antimon, Bismut, Platin

Unit weight: 338.6433705 u; Number of atoms in the formula: 2

Info

Empirical formula:

Pt(Sb0.75Bi0.25)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Antimony

Sb

26.97

0.75

37.50

121.7601000

91.3200750
Platinum

Pt

57.61

1

50.00

195.0782000

195.0782000
Bismuth

Bi

15.43

0.25

12.50

208.9803820

52.2450955

Analysis wt%

Pt : 57.00, Sb : 26.10, Bi : 16.30, PLT : 57.00 (Ref: Bulletin de Mineralogie 72)

Strunz 9th edition incl. updates

2.CC.05

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfoarsenide, Sulfoantimonide, Sulfobismuthide)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
C: mit Nickel (Ni), Eisen (Fe), Cobalt (Co), usw.
05:Nickelin-Gruppe

Lapis Classification

II/C.20-095

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
C: Sulfide mit Metall : S,Se,Te ~ 1:1
20: Nickelin-Gruppe

Classification by Hölzel

2.CC.390

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
C: With Pd,Pt, etc. - Coordination Number ~[4], Planar
3: Coordination Number ~[3+3] Nickeline-Group

Dana 8th edition

02.08.11.08

02: Sulfide Minerals
08: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
11: Nickeline Group (Hexagonal: P63/mmc)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

cremfarben

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

hexagonal

Class (H-M)

6/mmm

Space Group number

194

Space Group

P63/mmc

Cell parameters a (Å)

4.175

Cell parameters b (Å)

-

Cell parameters c (Å)

5.504

Cell parameters a/b or c/a

1.318

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volume (ų)

83.085

X-Ray Powder Diffraction

3.618(60),
3.027(100),
2.192(100),
2.088(80),
1.720(40),
1.512(50),
1.224(40),
1.149(50)
XRD chart Stumpflite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5

VHN (Hardness Vickers)

385 (50g)

Density (g/cm³)

13.52

13.535 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Südafrika/Limpopo, Provinz/Bushveld Complex/Burgersfort/Sekhukhuneland/Driekop Mine

Preface

Author (Name, Year)

Johan & Picot, 1972

References

Bulletin de la Société Française Minéralogie et de Cristallographie 95 (1972), 610

Other languages

German

Stumpflit

Spanish

Stumpflita

English

Stumpflite

French

Stumpflite

Russian

Штумпфлит

Simplified Chinese

六方锑铂矿

CNMNC (IMA)-Number

IMA 1972-013

CNMNC symbol

Symbol

Stm

Locations with GPS information

IDs

GUSID (Global unique identifier short form) _FMoH9QpA02HNyBRL0Z_uQ
GUID (Global unique identifier) 1F2853FC-29D4-4D03-8737-20512F467FB9
Database ID 3681