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Isomertieite (Isomertieit)

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Isomertieit
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Isomertieit
Kristallgröße etwa 0,7 mm: vielflächiges Isomertieit-Korn aus einer Seifenlagerstätte; Itabira, Brasilien
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: SyS-IsoM-2-2-1
Location: Brasilien/Südosten (Região Sudeste)/Minas Gerais/Itabira
Mineral: Isomertieite
Image: 1457427918
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Isomertieit (SNr: SyS-IsoM-2-2-1)

Kristallgröße etwa 0,7 mm: vielflächiges Isomertieit-Korn aus einer Seifenlagerstätte; Itabira, Brasilien
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2016-03-08
Locality: Itabira / Minas Gerais / Südosten (Região Sudeste) / Brasilien

Collectors Summary

Color blass gelb in reflektiertem Licht
Hardness (Mohs) 5.5
Crystal System kubisch, Fd3m

Chemism

Chemical formula

Pd11Sb2As2

Empirical formula (analysis)

(Pd10.66Cu0.27Au0.03)Sb1.88As2.17

Chemical composition

Antimon, Arsen, Palladium

Unit weight: 1549.0032219 u; Number of atoms in the formula: 15.01

Info

Empirical formula:

(Pd10.66Cu0.27Au0.03)Sb1.88As2.17

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Copper

Cu

1.11

0.27

1.80

63.5463000

17.1575010
Arsenic

As

10.50

2.17

14.46

74.9216020

162.5798763
Palladium

Pd

73.24

10.66

71.02

106.4210000

1,134.4478600
Antimony

Sb

14.78

1.88

12.52

121.7601000

228.9089880
Gold

Au

0.38

0.03

0.20

196.9665520

5.9089966

Analysis wt%

Ø Pd : 72.40, Cu : 1.10, As : 10.90, Sb : 15.60, PLT : 72.40 (Ref: Mineralogical Magazine 74)

Strunz 9th edition incl. updates

2.AC.15

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)
15:Isomertieit-Gruppe

Lapis Classification

II/A.05-050

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.105

2: SULFIDES
A: Alloys of Cu,Ag,Au,Ni,Pd with As,Sb,Bi,(Te)
C: With Pd
1: Atheneite-Vincentite-Group

Hey's Chemical Index of Minerals

03.12.37

03: Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
12: Sulphides etc. of the platinum metals

Dana 8th edition

03.12.37

03: Sulfides - Sulfosalts

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

blass gelb in reflektiertem Licht

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

12.283

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volumne (ų)

1853.162

Kristall structure

Oxana V. Karimova, Tatiana L. Grokhovskaya, Andrey A. Zolotarev, Vladislav V. Gurzhiy: Crystal Structure Refinements of Isomertieite, Pd11Sb2As2, and Törnroosite, Pd11As2Te2. Can. Mineral. Vol. 54 No. 2 (2016) S. 511-517.

X-Ray Powder Diffraction

2.356(80),
2.167(100),
1.533(60),
0.860(70),
0.821(70),
0.800(70),
0.788(70),
0.780(70)
XRD chart Isomertieite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

643 (15g)

Density (g/cm³)

10.33 (berechnet)

11.103 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Brasilien/Südosten (Região Sudeste)/Minas Gerais/Itabira

Type material

The Natural History Museum, London, England

National Museum of Natural History, Washington, D.C., USA

Collection number of type material

1934,72 (England), 142504 (USA)

Preface

Author (Name, Year)

Clark & Criddle & Fejer, 1974

References

Mineralogical Magazine 39 (1974), 528

Other languages

German

Isomertieit

French

Isomertieite

English

Isomertieite

Spanish

Isomertieíta

Russian

Изомертиит

Simplified Chinese

丰滦矿

Simplified Chinese

等轴砷锑钯矿

Alternative Name

German

Fengluanit

Spanish

Fengluanita

English

Fengluanite

German

Guanglinit

Spanish

Guanglinita

English

Guanglinite

CNMNC (IMA)-Number

IMA 1973-057

CNMNC symbol

Symbol

Ism

Locations with GPS information