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Orthogersdorffite (Gersdorffit-Pca21)

Pictures (1 Images total)

schwarzer Orthogersdorffit, Grube Brüderbund
Views (File:
1698433685
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schwarzer Orthogersdorffit, Grube Brüderbund
Bildbreite0,9 mm
Copyright: husi; Contribution: husi
Collection: Lithothek der Münchener Micromounter, Collection number: B007972, Donator: husi
Location: Deutschland/Nordrhein-Westfalen/Arnsberg, Bezirk/Siegen-Wittgenstein, Kreis/Siegen/Eiserfeld/Grube Brüderbund
Mineral: Orthogersdorffite
Image: 1698433685
License: Usage for Mineralienatlas project only
schwarzer Orthogersdorffit, Grube Brüderbund (SNr: B007972)  E
Analysed with energy dispersive X-ray spectroscopy EDX
X
Analysed with X-ray diffraction XRD

Bildbreite0,9 mm

Collection: Lithothek der Münchener Micromounter
Copyright: husi
Contribution: husi 2023-10-27
Locality: Grube Brüderbund / Eiserfeld / Siegen / Siegen-Wittgenstein, Kreis / Arnsberg, Bezirk / Nordrhein-Westfalen / Deutschland

You find additional specimen at the Geolitho Museum

Collectors Summary

Crystal System orthorhombisch, Pca21

Chemism

Chemical formula

NiAsS

Chemical composition

Arsen, Nickel, Schwefel

Unit weight: 165.680522 u; Number of atoms in the formula: 3

Info

Empirical formula:

NiAsS

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

19.35

1

33.33

32.0655000

32.0655000

Nickel

Ni

35.43

1

33.33

58.6934200

58.6934200

Arsenic

As

45.22

1

33.33

74.9216020

74.9216020

Strunz 9th edition incl. updates

2.EB.25

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
E: Metallsulfide mit M:S >= 1:2
B: M:S = 1:2, mit Fe, Co, Ni, PGE, usw.
25:Gersdorffit-Gruppe

Classification by Hölzel

2.EB.410

2: SULFIDES
E: Me/S=1/2 (also < 1/2)
B: With Fe,Co,Ni,PGE Pyrite, Marcasite Family
4: Gersdorffite Ullmannite Cobaltite-Group

Mineral status

anerkanntes Mineral

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mm2

Space Group number

29

Space Group

Pca21

Cell parameters a (Å)

5.622

Cell parameters b (Å)

5.622

Cell parameters c (Å)

5.622

Cell parameters a/b or c/a

1

Cell parameters c/b

1

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

177.694

X-Ray Powder Diffraction

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

VHN (Hardness Vickers)

712 (100g)

Density (g/cm³)

6.239 (berechnet)

6.193 ( ρ calc. Mineralienatlas )

References

Bayliss P (1982) A further crystal structure refinement of gersdorffite, American Mineralogist 67, 1058-1064

Canadian Mineralogist 24 (1986), 27

American Mineralogist 67 (1982), 1058-1064

Frédéric Hatert; Stuart J. Mills; Marco Pasero; Ritsuro Miyawaki; Ferdinando Bosi: CNMNC guidelines for the nomenclature of polymorphs and polysomes. Mineralogical Magazine Vol. 87, Nr. 2 (2023) S. 225-232. Umbenennung in Orthogersdorffit

Other languages

German

Orthogersdorffit

umbenannt; CNMNC Newsletter 69; Mineralogical Magazine, 86

English

Orthogersdorffite

renamed; CNMNC Newsletter 69; Mineralogical Magazine, 86

old name

German

Gersdorffit-Pca21

umbenannt; CNMNC Newsletter 69; Mineralogical Magazine, 86

English

Gersdorffite-Pca21

renamed; CNMNC Newsletter 69; Mineralogical Magazine, 86

Russian

Герсдорфит-Pca21

Japanese

硫砒ニッケル鉱-Pca21

CNMNC symbol

Symbol

Gdf-Pca21

Locations with GPS information

IDs

GUSID (Global unique identifier short form) oxP__uOjhUS_Tga5xOuNYg
GUID (Global unique identifier) FEFF13A3-A3E3-4485-BF4E-06B9C4EB8D62
Database ID 6804