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Geerite

Pictures (4 Images total)

Geerit-Digenit
Views (Image: 1573807746): 479
Geerit-Digenit (SNr: Clara-Geer-2-2-1)

Dendritisches Geerit-Digenit-Aggregat. Geerit kommt auf der Grube Clara meist als Mischkristall mit Digenit vor. Bildbreite etwa 2,5 mm.

Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2019-11-15
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Geerit
Views (Image: 1577737149): 305
Geerit

Winzige schwarze Geerit-flecken neben Kupfer; Fundort: ⚒ Clara, Oberwolfach, Ortenaukreis, Freiburg, Baden-Württemberg, D; Bildbreite ca. 0.8 mm; ehemalige Sammlung Walter Graß; Fund 10/87

Copyright: Stefan
Contribution: Stefan 2019-12-30
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Geerit
Views (Image: 1577747386): 320
Geerit

Winzige schwarze Geerit-Flecken neben Kupfer; Fundort: ⚒ Clara, Oberwolfach, Ortenaukreis, Freiburg, Baden-Württemberg, D; Bildbreite ca. 0.6 mm; ehemalige Sammlung Walter Graß

Copyright: Stefan
Contribution: Stefan 2019-12-31
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Geerit
Views (Image: 1587050018): 260
Geerit (SNr: qvviSfx4fkK8OpBP_1bcrg)

⚒ Clara, Oberwolfach, Ortenaukreis, Freiburg, Baden-Württemberg, DE; Bildbreite ca. 2mm; ehemalige Sammlung Walter Grass

Collection: Stefan
Copyright: Stefan
Contribution: Stefan 2020-04-16
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland

Collectors Summary

Color blaugrau, bunt-met.
Hardness (Mohs) 3
Crystal System trigonal, R32, R3m, R3m

Chemism

Chem­ical formula

Cu8S5

Chem­ical com­po­si­tion

Kupfer, Schwefel

Unit weight: 668.6979 u; Number of atoms in the formula: 13

Info

Empirical formula:

Cu8S5

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

23.98

5

38.46

32.0655000

160.3275000

Copper

Cu

76.02

8

61.54

63.5463000

508.3704000

Anal­y­sis wt%

Cu : 76.05, S : 23.95 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

2.BA.05

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
B: Metallsulfide, M : S > 1 : 1 (hauptsächlich 2 : 1)
A: mit Kupfer (Cu), Silber (Ag), Gold (Au)
05:Chalkosin/Chalcocit-Gruppe

Lapis Clas­sifica­tion

II/B.01-060

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
B: Sulfide, Selenide und Telluride mit Verhältnis Metall : S,Se,Te > 1:1
1: Kupfersulfide

Clas­sifica­tion by Hölzel

2.BA.160

2: SULFIDES
B: Sulfides (etc) with Me/S > 1/1 (mostly 2/1)
A: With Cu,Ag,Au
1: Chalcocite-Bornite-Group

Dana 8th edi­tion

02.04.07.06

02: Sulfide Minerals
04: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=2:1
07: Chalcocite Group ([Cu]2-x S] formulae)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

blaugrau, bunt-met.

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

32, 3m, 3m

Space Group number

155, 160, 166

Space Group

R32, R3m, R3m

Cell param­e­ters a (Å)

3.83

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

46.84

Cell param­e­ters a/b or c/a

12.23

Cell param­e­ters c/b

-

Z

3

Volumne (ų)

595.038

X-Ray Pow­der Diffrac­tion

3.128(100),
2.712(10),
1.918(50),
1.637(30),
1.576(10),
1.247(10),
1.109(20)

XRD chart Geerite

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

Physical Properties

Hard­ness (Mohs)

3

VHN (Hard­ness Vick­ers)

86 (25g)

Density (g/cm³)

5.610 (berechnet)

5.598 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

USA/New York/St. Lawrence Co./De Kalb Township

Preface

Author (Name, Year)

Goble & Robinson, 1980

References

Canadian Mineralogist 18 (1980), 519

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

Geerite

Cu8S5

trigonal : 32, 3m, 3m : R32, R3m, R3m

2.BA.05

Roxbyite

Cu58S32

triklin : 1 : P1

2.BA.05

Djurleite

Cu31S16

monoklin : 2/m : P21/n

2.BA.05

Chalcocite

Cu2S

monoklin : 2/m : P21/c

2.BA.05

Digenite

Cu1.8S

trigonal : 3m : R3m

2.BA.05e

Wuyanzhiite

Cu2S

tetragonal : 422 : P43212

2.BA.05g

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

Chalcocite

Cu2S

monoklin : 2/m : P21/c

II/B.01-010

Djurleite

Cu31S16

monoklin : 2/m : P21/n

II/B.01-020

Digenite

Cu1.8S

trigonal : 3m : R3m

II/B.01-030

Roxbyite

Cu58S32

triklin : 1 : P1

II/B.01-040

Anilite

Cu7S4

orthorhombisch : mmm : Pnma

II/B.01-050

Geerite

Cu8S5

trigonal : 32, 3m, 3m : R32, R3m, R3m

II/B.01-060

Spionkopite

Cu39S28

trigonal : 3m, 32, 3m : P3m1, P321, P3m1

II/B.01-070

Yarrowite

Cu1.2S

trigonal : 3m, 32, 3m : P3m1, P321, P3m1

II/B.01-080

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

Chalcocite

Cu2S

monoklin : 2/m : P21/c

2.BA.100

Djurleite

Cu31S16

monoklin : 2/m : P21/n

2.BA.110

Roxbyite

Cu58S32

triklin : 1 : P1

2.BA.120

Digenite

Cu1.8S

trigonal : 3m : R3m

2.BA.140

Anilite

Cu7S4

orthorhombisch : mmm : Pnma

2.BA.150

Geerite

Cu8S5

trigonal : 32, 3m, 3m : R32, R3m, R3m

2.BA.160

Bornite

Cu5FeS4

orthorhombisch : mmm : Pbca

2.BA.180

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

Acanthite

Ag2S

monoklin : 2/m : P21/n

02.04.01.01

Naumannite

Ag2Se

orthorhombisch : 222 : P212121

02.04.01.02

Aguilarite

Ag4SeS

02.04.01.03

Hessite

Ag2Te

monoklin : 2/m : P21/c

02.04.02.01

Cervelleite

Ag4TeS

monoklin : 2/m : P21/n

02.04.02.02

Uytenbogaardtite

Ag3AuS2

trigonal : 3m : R3c

02.04.03.01

Fischesserite

Ag3AuSe2

kubisch : 432 : I4132

02.04.03.02

Petzite

Ag3AuTe2

kubisch : 432 : I4132

02.04.03.03

Jalpaite

Ag3CuS2

tetragonal : 4/mmm : I41/amd

02.04.04.01

Selenojalpaite

Ag3CuSe2

tetragonal : 4/mmm : I41/amd

02.04.04.02

Mckinstryite

Ag5Cu3S4

orthorhombisch : mmm, mm2 : Pnma

02.04.05.01

Stromeyerite

AgCuS

orthorhombisch : mm2 : Cmc21

02.04.06.01

Eucairite

CuAgSe

orthorhombisch : mmm : Pmmn

02.04.06.02

Chalcocite

Cu2S

monoklin : 2/m : P21/c

02.04.07.01

Djurleite

Cu31S16

monoklin : 2/m : P21/n

02.04.07.02

Digenite

Cu1.8S

trigonal : 3m : R3m

02.04.07.03

Roxbyite

Cu58S32

triklin : 1 : P1

02.04.07.04

Anilite

Cu7S4

orthorhombisch : mmm : Pnma

02.04.07.05

Geerite

Cu8S5

trigonal : 32, 3m, 3m : R32, R3m, R3m

02.04.07.06

Spionkopite

Cu39S28

trigonal : 3m, 32, 3m : P3m1, P321, P3m1

02.04.07.07

Weissite

Cu2-xTe {x ≈ 0.21}

hexagonal : 6/mmm : P6/mmm

02.04.08.01

Bellidoite

Cu2Se

tetragonal : 4/m, : P42/n,

02.04.09.01

Other languages

German

Geerit

Spanish

Geerita

English

Geerite

French

Geerite

Russian

Джирит

Simplified Chinese

吉硫铜矿

IMA Number

IMA 1978-024

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Джирит

Mineral Dealer

German pages

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

Locations with GPS information