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Atheneite (Atheneit)

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Atheneit
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Atheneit

Aggregat von Atheneit, Itabira, Minas Gerais, Brasilien; BB 1 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-05-01
Locality: Itabira / Minas Gerais / Südosten (Região Sudeste) / Brasilien

Collectors Summary

Color grau
Lustre Metallglanz
Hardness (Mohs) 5.25
Crystal System hexagonal, P62m

Chemism

Chem­ical formula

Pd2(As0.75Hg0.25)

Addi­tional chem. informa­tion

vor 2010 - (Pd,Hg)3As (Z = 2)

Chem­ical com­po­si­tion

Arsen, Palladium, Quecksilber

Unit weight: 319.1812015 u; Number of atoms in the formula: 3

Info

Empirical formula:

Pd2(As0.75Hg0.25)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Arsenic

As

17.60

0.75

25.00

74.9216020

56.1912015

Palladium

Pd

66.68

2

66.67

106.4210000

212.8420000

Mercury

Hg

15.71

0.25

8.33

200.5920000

50.1480000

Anal­y­sis wt%

Pd : 66.00, Hg : 14.90, Au : 0.50, As : 19.00, PLT : 66.00 (Ref: Mineralogical Magazine 74)

Strunz 9th edi­tion incl. updates

2.AC.05

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)
05:Atheneit-Vincentit-Gruppe

Lapis Clas­sifica­tion

II/A.05-010

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.150

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

Dana 8th edi­tion

02.02.04.01

02: Sulfide Minerals
02: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=3:1

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

grau

Change in color

weiß in reflektiertem Licht

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Pleochro­ism

sehr schwach

Anisotropism

mäßig

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(400) 46.10, 48.30, 47.20
(420) 47.40, 49.80, 48.60
(440) 48.50, 50.90, 49.70
(460) 49.70, 52.40, 51.05
(480) 50.80, 53.60, 52.20
(500) 51.90, 54.80, 53.35
(520) 53.00, 55.80, 54.40
(540) 54.00, 56.70, 55.35
(560) 54.80, 57.30, 56.05
(580) 55.70, 57.80, 56.75
(600) 56.40, 58.30, 57.35
(620) 57.00, 58.50, 57.75
(640) 57.40, 58.60, 58.00
(660) 57.60, 58.70, 58.15
(680) 57.90, 59.00, 58.45
(700) 58.20, 59.10, 58.65

Reflection chart Atheneite

Reflec­tiv­ity Ø

54.56

Crystallography

Crystal Sys­tem

hexagonal

Class (H-M)

6m2

Space Group number

189

Space Group

P62m

Cell param­e­ters a (Å)

6.813

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

3.4892

Cell param­e­ters a/b or c/a

0.512

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

3

Volumne (ų)

140.26

Kristall struc­ture

Luca Bindi: Atheneite, [Pd2][As0,75Hg0,25], from Itabira, Minas Gerais, Brazil: crystal structure and revision of the chemical formula. Can. Mineral. 48 (2010) S.1149-1155.

X-Ray Pow­der Diffrac­tion

2.423(100),
2.246(80),
1.871(70),
1.371(80),
1.302(80),
1.259(80),
1.034(70),
0.879(70)

XRD chart Atheneite

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)

5.25

VHN (Hard­ness Vick­ers)

431 (100g)

Density (g/cm³)

10.2 (gemessen)

11.336 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

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

Preface

Author (Name, Year)

Clark & Criddle & Fejer, 1974

References

Mineralogical Magazine 39 (1974), 528

Luca Bindi: Atheneite, [Pd2][As0,75Hg0,25], from Itabira, Minas Gerais, Brazil: crystal structure and revision of the chemical formula. Can. Mineral. 48 (2010) S.1149-1155.

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

Atheneite

Pd2(As0.75Hg0.25)

hexagonal : 6m2 : P62m

2.AC.05

Vincentite

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

monoklin : 2/m : P2/m

2.AC.05

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

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]

Vincentite

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

monoklin : 2/m : P2/m

2.AC.100

Isomertieite

Pd11Sb2As2

kubisch : m3m : Fd3m

2.AC.105

Oulankaite

Pd5Cu4SnTe2S2

2.AC.110

Atheneite

Pd2(As0.75Hg0.25)

hexagonal : 6m2 : P62m

2.AC.150

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

Dyscrasite

Ag3Sb

orthorhombisch : mm2 : Pmm2

02.02.01.01

Allargentum

(Ag,Sb)

hexagonal : 6/mmm : P63/mmc

02.02.01.02

Domeykite

Cu3As

kubisch : 43m : I43d

02.02.02.01

Kutinaite

Cu14Ag6As7

tetragonal : 4/mmm : P4/mmm

02.02.02.02

Dienerite

Ni3As

kubisch : 43m : I43d

02.02.02.03

Bogdanovite

(Au,Te,Pb)3(Cu,Fe)

kubisch : m3m : Pm3m

02.02.03.01

Atheneite

Pd2(As0.75Hg0.25)

hexagonal : 6m2 : P62m

02.02.04.01

Vincentite

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

monoklin : 2/m : P2/m

02.02.05.01

Keithconnite

Pd20Te7

trigonal : 3 : R3

02.02.06.01

Other languages

Spanish

Ateneíta

German

Atheneit

French

Atheneite

English

Atheneite

Russian

Атенеит

Traditional Chinese

砷汞鈀礦

Simplified Chinese

砷汞钯矿

Alternative Name

Spanish

Atheneita

IMA Number

IMA 1973-050

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

German pages

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

English pages

Mindat - search for: Atheneite
Webmineral - search for:Atheneite
Handbook-of-Mineralogy - search for: Atheneite
RRUFF - Raman, XRD and other mineral data - search for: Atheneite
RRUFF - References and PDF downloads - search for: Atheneite
American-Mineralogist-Crystal-Structure-Database - search for: Atheneite
Athena - search for: Atheneite

Russian pages

Webmineral.ru - search for: Атенеит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Atheneit
Crystal-Treasure.com - search for: Atheneit
Bosse - search for: Atheneit

Locations with GPS information