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Keutschite

Pictures (1 Images total)

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
Location: Peru/Lima, Region/Oyon, Provinz/Uchucchacua Mine
Mineral: Keutschite
Image: 1589710261
License: Usage for Mineralienatlas project only
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, Sulfoarsenide, Sulfoantimonide, Sulfobismuthide)
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°

Volume (ų)

312.398

Crystal 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

Other languages

German

Keutschit

English

Keutschite

CNMNC (IMA)-Number

IMA 2014-038

CNMNC symbol

Symbol

Keu

Locations with GPS information

IDs

GUSID (Global unique identifier short form) nIpYGVeU5kqt0Npt3aNbVQ
GUID (Global unique identifier) 19588A9C-9457-4AE6-ADD0-DA6DDDA35B55
Database ID 7807