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Greigite

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Greigit
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Greigit

Grauer Greigit in Schalenblende von der Grube Segen Gottes, Wiesloch, Heidelberg, Kraichgau, Baden-Württemberg, Deutschland. Angeschliffenes Stück, ca. 55 mm breit.

Collection: raritätenjäger
Copyright: raritätenjäger
Contribution: raritätenjäger 2010-09-21
Locality: Grube Segen Gottes / Grubenfeld Kobelsberg / Wiesloch / Rhein-Neckar-Kreis / Karlsruhe, Bezirk / Baden-Württemberg / Deutschland

Collectors Summary

Color blass cremeweiß
Streak color schwarz
Hardness (Mohs) 5
Solubility ++ HF, warme HCl
Crystal System kubisch, Fd3m

Chemism

Chem­ical formula

Fe2+Fe3+2S4

Chem­ical com­po­si­tion

Eisen, Schwefel

Unit weight: 295.7976 u; Number of atoms in the formula: 7

Info

Empirical formula:

FeFe2S4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

43.36

4

57.14

32.0655000

128.2620000

Iron

Fe

56.64

3

42.86

55.8452000

167.5356000

Anal­y­sis wt%

Fe : 56.50, S : 42.20 (Ref: American Mineralogist 68)

Strunz 9th edi­tion incl. updates

2.DA.05

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
D: Metallsulfide mit M:S = 3:4 und 2:3
A: M:S = 3:4
05:Thiospinel/Linneit-Gruppe

Lapis Clas­sifica­tion

II/D.01-010

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
D: Sulfide mit Metall : S,Se,Te < 1:1
1: Linneit-Gruppe

Clas­sifica­tion by Hölzel

2.DA.100

2: SULFIDES
D: With Me/S <1/1 and >1/2
A: Me/S=3/4 Thiospinels, etc
1: Linnaeite-Group

Dana 8th edi­tion

02.10.01.10

02: Sulfide Minerals
10: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=3:4
01: Linnaeite Group (Isometric: Fd3m)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Spinel supergroup  ⇒ Thiospinel Group  ⇒ Linnaeite subgroup

Optical Properties

Color

blass cremeweiß

Streak color

schwarz

Diaphane­ity (Trans­parency)

opak

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell param­e­ters a (Å)

9.878

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)

963.845

X-Ray Pow­der Diffrac­tion

3.498(30),
2.980(100),
2.470(50),
1.901(30),
1.746(80),
1.286(10),
1.105(20),
1.008(30)

XRD chart Greigite

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

VHN (Hard­ness Vick­ers)

412 (50g)

Density (g/cm³)

4.049

4.077 ( ρ calc. Mineralienatlas )

Insta­bil­ity

++ HF, warme HCl

Preface

Author (Name, Year)

Skinner & Erd & Grimaldi, 1964

References

American Mineralogist 49 (1964), 543

Richard A. D. Pattrick, Victoria S. Coker, Masood Akhtar, M. Azad Malik, Edward Lewis, Sarah Haigh, Paul O'Brien, Padraic C. Shafer, Gerrit van der Laan: Magnetic spectroscopy of nanoparticulate greigite, Fe3S4. Mineral Magazine Vol. 81, Nr. 4 (2017) S. 857-872. (an synth. Material)

IMA group assignments

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

Indite

Fe2+In2S4

kubisch : m3m : Fd3m

2.DA.05

Greigite

Fe2+Fe3+2S4

kubisch : m3m : Fd3m

2.DA.05

Linnaeite

Co2+Co3+2S4

kubisch : m3m : Fd3m

2.DA.05

Malanite

Cu(Pt,Ir)2S4

kubisch : m3m : Fd3m

2.DA.05

'Dayingite'

CuCoPtS4

kubisch : m3m : Fd3m

2.DA.05

Siegenite

(Ni,Co)3S4

kubisch : m3m : Fd3m

2.DA.05

Violarite

Fe2+Ni3+2S4

kubisch : m3m : Fd3m

2.DA.05

Carrollite

Cu(Co,Ni)2S4

kubisch : m3m : Fd3m

2.DA.05

Kalininite

ZnCr2S4

kubisch : m3m : Fd3m

2.DA.05

Polydymite

NiNi2S4

kubisch : m3m : Fd3m

2.DA.05

Tyrrellite

(Cu,Co,Ni)3Se4

kubisch : m3m : Fd3m

2.DA.05

Cadmoindite

CdIn2S4

kubisch : m3m : Fd3m

2.DA.05

Fletcherite

Cu(Ni,Co)2S4

kubisch : m3m : Fd3m

2.DA.05

Bornhardtite

Co2+Co3+2Se4

kubisch : m3m : Fd3m

2.DA.05

Florensovite

Cu(Cr1.5Sb0.5)S4

kubisch : m3m : Fd3m

2.DA.05

Trüstedtite

Ni3Se4

kubisch : m3m : Fd3m

2.DA.05

Xingzhongite

(Pb,Cu,Fe)(Ir,Pt,Rh)2S4

kubisch : m3m : Fd3m

2.DA.05

Cuproiridsite

CuIr2S4

kubisch : m3m : Fd3m

2.DA.05

Cuprorhodsite

CuRh2S4

kubisch : m3m : Fd3m

2.DA.05

Daubréelite

Fe2+Cr2S4

kubisch : m3m : Fd3m

2.DA.05

Ferrorhodsite

(Fe,Cu)(Rh,Ir,Pt)2S4

kubisch : m3m : Fd3m

2.DA.05

Cuprokalininite

CuCr2S4

kubisch : m3m : Fd3m

2.DA.05

'Thiospinel Group'

AB2X4

kubisch : m3m : Fd3m

2.DA.05

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

Greigite

Fe2+Fe3+2S4

kubisch : m3m : Fd3m

II/D.01-010

Linnaeite

Co2+Co3+2S4

kubisch : m3m : Fd3m

II/D.01-020

Polydymite

NiNi2S4

kubisch : m3m : Fd3m

II/D.01-030

Carrollite

Cu(Co,Ni)2S4

kubisch : m3m : Fd3m

II/D.01-040

Fletcherite

Cu(Ni,Co)2S4

kubisch : m3m : Fd3m

II/D.01-050

Florensovite

Cu(Cr1.5Sb0.5)S4

kubisch : m3m : Fd3m

II/D.01-060

Violarite

Fe2+Ni3+2S4

kubisch : m3m : Fd3m

II/D.01-070

Siegenite

(Ni,Co)3S4

kubisch : m3m : Fd3m

II/D.01-080

Indite

Fe2+In2S4

kubisch : m3m : Fd3m

II/D.01-090

Cadmoindite

CdIn2S4

kubisch : m3m : Fd3m

II/D.01-095

Daubréelite

Fe2+Cr2S4

kubisch : m3m : Fd3m

II/D.01-100

Kalininite

ZnCr2S4

kubisch : m3m : Fd3m

II/D.01-110

Cuprokalininite

CuCr2S4

kubisch : m3m : Fd3m

II/D.01-115

Bornhardtite

Co2+Co3+2Se4

kubisch : m3m : Fd3m

II/D.01-120

Trüstedtite

Ni3Se4

kubisch : m3m : Fd3m

II/D.01-130

Tyrrellite

(Cu,Co,Ni)3Se4

kubisch : m3m : Fd3m

II/D.01-140

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

Greigite

Fe2+Fe3+2S4

kubisch : m3m : Fd3m

2.DA.100

Linnaeite

Co2+Co3+2S4

kubisch : m3m : Fd3m

2.DA.120

Bornhardtite

Co2+Co3+2Se4

kubisch : m3m : Fd3m

2.DA.130

Violarite

Fe2+Ni3+2S4

kubisch : m3m : Fd3m

2.DA.150

Polydymite

NiNi2S4

kubisch : m3m : Fd3m

2.DA.160

Siegenite

(Ni,Co)3S4

kubisch : m3m : Fd3m

2.DA.170

Trüstedtite

Ni3Se4

kubisch : m3m : Fd3m

2.DA.180

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

Linnaeite

Co2+Co3+2S4

kubisch : m3m : Fd3m

02.10.01.01

Carrollite

Cu(Co,Ni)2S4

kubisch : m3m : Fd3m

02.10.01.02

Fletcherite

Cu(Ni,Co)2S4

kubisch : m3m : Fd3m

02.10.01.03

Tyrrellite

(Cu,Co,Ni)3Se4

kubisch : m3m : Fd3m

02.10.01.04

Bornhardtite

Co2+Co3+2Se4

kubisch : m3m : Fd3m

02.10.01.05

Siegenite

(Ni,Co)3S4

kubisch : m3m : Fd3m

02.10.01.06

Polydymite

NiNi2S4

kubisch : m3m : Fd3m

02.10.01.07

Violarite

Fe2+Ni3+2S4

kubisch : m3m : Fd3m

02.10.01.08

Trüstedtite

Ni3Se4

kubisch : m3m : Fd3m

02.10.01.09

Greigite

Fe2+Fe3+2S4

kubisch : m3m : Fd3m

02.10.01.10

Daubréelite

Fe2+Cr2S4

kubisch : m3m : Fd3m

02.10.01.11

Indite

Fe2+In2S4

kubisch : m3m : Fd3m

02.10.01.12

Kalininite

ZnCr2S4

kubisch : m3m : Fd3m

02.10.01.13

Florensovite

Cu(Cr1.5Sb0.5)S4

kubisch : m3m : Fd3m

02.10.01.14

Cuproiridsite

CuIr2S4

kubisch : m3m : Fd3m

02.10.01.15

Cuprorhodsite

CuRh2S4

kubisch : m3m : Fd3m

02.10.01.16

Malanite

Cu(Pt,Ir)2S4

kubisch : m3m : Fd3m

02.10.01.17

Ferrorhodsite

(Fe,Cu)(Rh,Ir,Pt)2S4

kubisch : m3m : Fd3m

02.10.01.18

Cadmoindite

CdIn2S4

kubisch : m3m : Fd3m

02.10.01.19

Wilkmanite

Ni3Se4

monoklin : 2/m : I2/m

02.10.02.01

Brezinaite

Cr3S4

monoklin : 2/m : I2/m

02.10.02.02

Heideite

(Fe,Cr)1.15(Ti,Fe)2S4

monoklin : 2/m : I2/m

02.10.02.03

Rhodostannite

(Cu,Ag)2FeSn3S8

tetragonal : 4/m : I41/a

02.10.03.01

Toyohaite

Ag2FeSn3S8

tetragonal : 4/m : I41/a

02.10.03.02

Konderite

PbCu3Rh8S16

hexagonal : 6/m, 6, 6/mmm, 622, 6m2 : P6/m, P6, P6/mmm, P622, P6m2

02.10.04.01

Inaglyite

PbCu3Ir8S16

hexagonal : 173, 168, 191, 147, 187 : P63, P6, P6/mmm, P622, P6m2

02.10.04.02

Tarkianite

(Cu,Fe)(Re,Mo)4S8

kubisch : 43m : F43m

02.10.05.01

Alternative Name

Melnikovite of Doss

Simplified Chinese

硫复铁矿

CNMNC (IMA)-Number

IMA 1963-007

CNMNC symbol

Symbol

Grg

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

German pages

DeWikiPedia - search for: Greigit
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English pages

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RRUFF - References and PDF downloads - search for: Greigite
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Russian pages

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