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Palladoarsenide

Pictures (1 Images total)

Pt–Fe alloy, laurite (1), törnroosite [Pd11As2Te2] (2), palladoarsenide [Pd2As] (3), sperrylite (4),
Views (Image: 1620849887): 551
Pt–Fe alloy, laurite (1), törnroosite [Pd11As2Te2] (2), palladoarsenide [Pd2As] (3), sperrylite (4), (SNr: AS)  W
Analysed with wavelength-dispersive X-ray WDS

Detrital composite grain consisting of Pt–Fe alloy, laurite (1), törnroosite [Pd11As2Te2] (2), palladoarsenide [Pd2As] (3), sperrylite (4), and irarsite (5). Moopetsi river, Maandagshoek farm, ea...

Collection: in Anschliffsammlung BGR Hannover
Copyright: Thomas Oberthür
Contribution: Oberthür 2021-05-12
Locality: Maandagshoek Farm / Bushveld Complex / Limpopo, Provinz / Südafrika

Collectors Summary

Color stahlgrau
Lustre Metallglanz
Hardness (Mohs) 4.75
Cleavages vollkommen in zwei Richtungen
Solubility +++ HNO3, - verdünnte HNO3, HCl, H2SO4
Crystal System monoklin, P2/m

Chemism

Chem­ical formula

Pd2As

Chem­ical com­po­si­tion

Arsen, Palladium

Unit weight: 287.763602 u; Number of atoms in the formula: 3

Info

Empirical formula:

Pd2As

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Arsenic

As

26.04

1

33.33

74.9216020

74.9216020

Palladium

Pd

73.96

2

66.67

106.4210000

212.8420000

Anal­y­sis wt%

Ø Pd : 67.55, Ag : 3.23, Au : 1.38, As : 25.95, PLT : 67.55 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 74)

Strunz 9th edi­tion incl. updates

2.AC.25

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)
25:Palladoarsenid-Gruppe

Lapis Clas­sifica­tion

II/A.05-090

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.320

2: SULFIDES
A: Alloys of Cu,Ag,Au,Ni,Pd with As,Sb,Bi,(Te)
C: With Pd
3: Stibiopalladinite-Palladoarsenide-Group

Dana 8th edi­tion

02.04.14.01

02: Sulfide Minerals
04: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=2:1

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

stahlgrau

Change in color

grauweiß mit einem leicht rose Farbton in polierten BEreichen

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Anisotropism

Moderat, dunkelgrau mit Blauton zu rotbraun in Luft; dunkelgrau zu braungrau mit Rotstich in Öl

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(400) 44.20, 45.10, 44.65
(420) 46.80, 46.80, 46.80
(440) 48.40, 48.80, 48.60
(460) 49.40, 50.30, 49.85
(480) 50.20, 51.60, 50.90
(500) 51.20, 53.10, 52.15
(520) 51.90, 54.10, 53.00
(540) 52.50, 54.80, 53.65
(560) 53.30, 55.40, 54.35
(580) 53.90, 55.80, 54.85
(600) 54.60, 56.30, 55.45
(620) 55.40, 57.10, 56.25
(640) 56.00, 57.60, 56.80
(660) 56.60, 58.10, 57.35
(680) 57.10, 58.60, 57.85
(700) 57.80, 59.20, 58.50

Reflection chart Palladoarsenide

Reflec­tiv­ity Ø

53.19

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

10

Space Group

P2/m

Cell param­e­ters a (Å)

9.25

Cell param­e­ters b (Å)

8.47

Cell param­e­ters c (Å)

10.44

Cell param­e­ters a/b or c/a

1.092

Cell param­e­ters c/b

1.233

Cell param­e­ters α

90°

Cell param­e­ters β

94.0

Cell param­e­ters γ

90°

Z

18

Volumne (ų)

815.955

X-Ray Pow­der Diffrac­tion

2.60(70),
2.35(60),
2.31(60),
2.21(90),
2.14(100),
2.13(50),
2.12(50),
1.955(70)

XRD chart Palladoarsenide

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

Physical Properties

Hard­ness (Mohs)

4.75

VHN (Hard­ness Vick­ers)

277 - 357, Ø 326 (20g)

Density (g/cm³)

10.42

10.541 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen in zwei Richtungen

Tenac­ity

spröde

Insta­bil­ity

+++ HNO3, - verdünnte HNO3, HCl, H2SO4

(Co-)Type locality

(Co-)Type locality

Russland/Sibirien, Föderationskreis/Krasnojarsk, Region (Krasnojarski krai)/Taimyrhalbinsel (Tajmyr)/Putoran-Plateau/Noril'sk/Talnakh/Komsomol'skii Mine (Komsomolsky Mine)

Type mate­r­ial

A. E. Fersman Mineralogical Museum, Academy of Sciences, Moskau, Russland

Preface

Name from

Für Palladium und Arsen in seiner chemischen Zusammensetzung.

Author (Name, Year)

Begizov & Meshchankina & Dubakina, 1974

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 103 (1974), 104

New Data on Minerals 46 (2011), 48

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Majakite

PdNiAs

hexagonal : 6m2 : P62m

2.AC.25

Naldrettite

Pd2Sb

orthorhombisch : mm2 : Cmc21

2.AC.25

Rhodarsenide

(Rh,Pd)2As

orthorhombisch : mmm : Pnma

2.AC.25

Palladodymite

(Pd,Rh)2As

orthorhombisch : mmm : Pnma

2.AC.25

Palladoarsenide

Pd2As

monoklin : 2/m : P2/m

2.AC.25

Palladothallite

Pd3Tl

tetragonal : 4/mmm : I4/mmm

2.AC.25

Palladobismutharsenide

Pd2(As,Bi)

orthorhombisch : mm2, mmm : P21cn, Pmcn

2.AC.25

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Atheneite

Pd2(As0.75Hg0.25)

hexagonal : 6m2 : P62m

II/A.05-010

Vincentite

(Pd,Pt)3(As,Sb,Te)

monoklin : 2/m : P2/m

II/A.05-020

Stillwaterite

Pd8As3

trigonal : 3, 3 : P3, P3

II/A.05-030

Arsenopalladinite

Pd8As3

triklin : 1, 1 : P1, P1

II/A.05-040

Isomertieite

Pd11Sb2As2

kubisch : m3m : Fd3m

II/A.05-050

Törnroosite

Pd11As2Te2

kubisch : m3m : Fd3m

II/A.05-052

Miessiite

Pd11Te2Se2

kubisch : m3m : Fd3m

II/A.05-055

Mertieite-I

Pd5+x(Sb,As)2-x {x = 0.1-0.2}

II/A.05-060

Mertieite-II

Pd8(Sb,As)3

trigonal : 3m : R3c

II/A.05-070

Stibiopalladinite

Pd5Sb2

hexagonal : 6mm : P63cm

II/A.05-080

Palladoarsenide

Pd2As

monoklin : 2/m : P2/m

II/A.05-090

Palladobismutharsenide

Pd2(As,Bi)

orthorhombisch : mm2, mmm : P21cn, Pmcn

II/A.05-100

Palladodymite

(Pd,Rh)2As

orthorhombisch : mmm : Pnma

II/A.05-102

Rhodarsenide

(Rh,Pd)2As

orthorhombisch : mmm : Pnma

II/A.05-105

Naldrettite

Pd2Sb

orthorhombisch : mm2 : Cmc21

II/A.05-107

Zaccariniite

RhNiAs

tetragonal : 4/nmm : P4/nmm

II/A.05-109

Majakite

PdNiAs

hexagonal : 6m2 : P62m

II/A.05-110

Menshikovite

Pd3Ni2As3

hexagonal : 6, 6/m, 622 : P63, P63/m, P6322

II/A.05-112

Polkanovite

(Rh,Ni)12As7

hexagonal : 6/m : P63/m

II/A.05-115

Genkinite

(Pt,Pd)4Sb3

tetragonal : 422 : P41212

II/A.05-120

Ungavaite

Pd4Sb3

tetragonal : 422 : P41212, P4122, P43212

II/A.05-130

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Stibiopalladinite

Pd5Sb2

hexagonal : 6mm : P63cm

2.AC.300

Palladoarsenide

Pd2As

monoklin : 2/m : P2/m

2.AC.320

Palladobismutharsenide

Pd2(As,Bi)

orthorhombisch : mm2, mmm : P21cn, Pmcn

2.AC.340

Rhodarsenide

(Rh,Pd)2As

orthorhombisch : mmm : Pnma

2.AC.350

Palladodymite

(Pd,Rh)2As

orthorhombisch : mmm : Pnma

2.AC.355

Naldrettite

Pd2Sb

orthorhombisch : mm2 : Cmc21

2.AC.370

Majakite

PdNiAs

hexagonal : 6m2 : P62m

2.AC.380

Menshikovite

Pd3Ni2As3

hexagonal : 6, 6/m, 622 : P63, P63/m, P6322

2.AC.390

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Berzelianite

Cu2Se

kubisch : m3m : Fm3m

02.04.10.01

Cuprostibite

Cu2(Sb,Tl)

tetragonal : 4/mmm : P4/nmm

02.04.11.01

Crookesite

Cu7(Tl,Ag)Se4

tetragonal : 4 : I4

02.04.12.01

Sabatierite

Cu6TlSe4

02.04.12.02

Carlinite

Tl2S

trigonal : 3 : R3

02.04.13.01

Palladoarsenide

Pd2As

monoklin : 2/m : P2/m

02.04.14.01

Palladobismutharsenide

Pd2(As,Bi)

orthorhombisch : mm2, mmm : P21cn, Pmcn

02.04.15.01

Majakite

PdNiAs

hexagonal : 6m2 : P62m

02.04.16.01

Menshikovite

Pd3Ni2As3

hexagonal : 6, 6/m, 622 : P63, P63/m, P6322

02.04.16.02

Petrovskaite

AuAg(S,Se)

monoklin : 2, m, 2/m : P2, Pm, P2/m

02.04.17.01

Novákite

(Cu,Ag)21As10

monoklin : 2/m, m, m : C2/m, Cm, Cc

02.04.18.01

Rhodarsenide

(Rh,Pd)2As

orthorhombisch : mmm : Pnma

02.04.19.01

Palladodymite

(Pd,Rh)2As

orthorhombisch : mmm : Pnma

02.04.19.02

Other languages

Spanish

Paladoarseniuro

German

Palladoarsenid

English

Palladoarsenide

French

Palladoarsenide

Russian

Палладоарсенид

Simplified Chinese

斜砷钯矿

CNMNC (IMA)-Number

IMA 1973-005

CNMNC symbol

Symbol

Pda

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Palladoarsenid
Google-Bilder-Suche - search for: Palladoarsenid
Mineralogisch-Petrographisches-Institut Hamburg - search for: Palladoarsenid

English pages

Mindat - search for: Palladoarsenide
Webmineral - search for:Palladoarsenide
Handbook-of-Mineralogy - search for: Palladoarsenide
RRUFF - Raman, XRD and other mineral data - search for: Palladoarsenide
RRUFF - References and PDF downloads - search for: Palladoarsenide
American-Mineralogist-Crystal-Structure-Database - search for: Palladoarsenide
Athena - search for: Palladoarsenide
Strahlen.org - search for: Palladoarsenide
Mineralienatls.de (Forum) - search for: Palladoarsenid

Russian pages

Webmineral.ru - search for: Палладоарсенид

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Palladoarsenid
Crystal-Treasure.com - search for: Palladoarsenid
Bosse - search for: Palladoarsenid
Edelsteine Neuburg - Gundolf Fischer - search for: Palladoarsenid

Locations with GPS information