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Keutschite

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Keutschit auf Proustit
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Keutschit auf Proustit

messingfarbene Kristalle von Keutschit auf Proustit, Uchucchacua Mine, Oyon, Lima, Peru; BB < 1 mm

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-05-17
Locality: Uchucchacua Mine / Oyon, Provinz / Lima, Region / Peru

Collectors Summary

Crystal System tetragonal, I42m

Chemism

Chem­ical formula

Cu2AgAsS4

Chem­ical com­po­si­tion

Arsen, Kupfer, Silber, Schwefel

Unit weight: 438.144422 u; Number of atoms in the formula: 8

Info

Empirical formula:

Cu2AgAsS4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

29.27

4

50.00

32.0655000

128.2620000

Copper

Cu

29.01

2

25.00

63.5463000

127.0926000

Arsenic

As

17.10

1

12.50

74.9216020

74.9216020

Silver

Ag

24.62

1

12.50

107.8682200

107.8682200

Strunz 9th edi­tion incl. updates

2.CB.15

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
B: mit Zink (Zn), Eisen (Fe), Kupfer (Cu), Silber (Ag), usw.
15:Stannit-Gruppe

Lapis Clas­sifica­tion

II/C.06-005

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
C: Sulfide mit Metall : S,Se,Te ~ 1:1
6: Stannit-Gruppe

IMA sta­tus

anerkannt - CNMNC Newsletter No. 21, August 2014, page 804

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Stannite group

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

42m

Space Group number

121

Space Group

I42m

Cell param­e­ters a (Å)

5.5834(15)

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

10.021(3)

Cell param­e­ters a/b or c/a

1.795

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Volumne (ų)

312.398

Kristall struc­ture

Stannit-Gruppe; Struktur bestimmt

X-Ray Pow­der Diffrac­tion

3.09(vs), 2.79(ms), 1.966(s), 1.864(s), 1.659(s), 1.548(m), 1.270(m), 1.214(m)

(Co-)Type locality

(Co-)Type locality

Peru/Lima, Region/Oyon, Provinz/Uchucchacua Mine

Type mate­r­ial

Naturhistorisches Museum Wien, Wien, Austria

Col­lec­tion number of type mate­r­ial

N9734

Preface

Name from

Dr. Frank Keutsch (*1971), Professor der Chemie und Spezialist für Sulphide und Solphosalze

Author (Name, Year)

Dan Topa, Rie Takagi Fredrickson und Chris Stanley (2014)

References

Topa, D., Takagi Fredrickson, R. and Stanley, C. (2014) Keutschite, IMA 2014-038. CNMNC Newsletter No. 21, August 2014, page 804; Mineralogical Magazine, 78, 797-804

IMA group assignments

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

Idaite

Cu3FeS4

tetragonal : 42m : I42m

2.CB.15

Mohite

Cu2SnS3

monoklin : m : Cc

2.CB.15

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

2.CB.15

Kuramite

Cu3SnS4

tetragonal : 42m : I42m

2.CB.15

Stannite

Cu2FeSnS4

tetragonal : 42m : I42m

2.CB.15

Velikite

Cu2(Hg,Zn)SnS4

tetragonal : 4 : I4

2.CB.15

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

2.CB.15

Keutschite

Cu2AgAsS4

tetragonal : 42m : I42m

2.CB.15

Kësterite

Cu2(Zn,Fe)SnS4

tetragonal : 4 : I4

2.CB.15

Stannoidite

Cu8(Fe,Zn)3Sn2S12

orthorhombisch : 222 : I222

2.CB.15

Pirquitasite

Ag2ZnSnS4

tetragonal : 42m, 4 : I42m, I4

2.CB.15

Ferrokësterite

Cu2FeSnS4

tetragonal : 4 : I4

2.CB.15

Richardsite

Zn2CuGaS4

tetragonal : 42m : I42m

2.CB.15

Omariniite

Cu8Fe2ZnGe2S12

orthorhombisch : 222 : I222

2.CB.15c

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

Keutschite

Cu2AgAsS4

tetragonal : 42m : I42m

II/C.06-005

Luzonite

Cu3AsS4

tetragonal : 42m : I42m

II/C.06-010

Famatinite

Cu3SbS4

tetragonal : 42m : I42m

II/C.06-020

Permingeatite

Cu3SbSe4

tetragonal : 42m : I42m

II/C.06-030

Briartite

Cu2(Zn,Fe)GeS4

tetragonal : 42m : I42m

II/C.06-040

Barquillite

Cu2(Cd,Fe)GeS4

tetragonal : 42m : I42m

II/C.06-045

Kuramite

Cu3SnS4

tetragonal : 42m : I42m

II/C.06-050

Stannite

Cu2FeSnS4

tetragonal : 42m : I42m

II/C.06-060

Ferrokësterite

Cu2FeSnS4

tetragonal : 4 : I4

II/C.06-070

Kësterite

Cu2(Zn,Fe)SnS4

tetragonal : 4 : I4

II/C.06-080

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

II/C.06-090

Velikite

Cu2(Hg,Zn)SnS4

tetragonal : 4 : I4

II/C.06-100

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

II/C.06-110

Pirquitasite

Ag2ZnSnS4

tetragonal : 42m, 4 : I42m, I4

II/C.06-120

Sakuraiite

(Cu,Zn,Fe)3(In,Sn)S4

II/C.06-130

Petrukite

(Cu,Ag)2(Fe,Zn)(Sn,In)S4

orthorhombisch : mm2 : Pmn21

II/C.06-140

Rhodostannite

(Cu,Ag)2FeSn3S8

tetragonal : 4/m : I41/a

II/C.06-150

Toyohaite

Ag2FeSn3S8

tetragonal : 4/m : I41/a

II/C.06-160

Other languages

German

Keutschit

English

Keutschite

CNMNC (IMA)-Number

IMA 2014-038

CNMNC symbol

Symbol

Keu

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

German pages

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

English pages

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

Mineral Dealer

German pages

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

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