https://www.mineraliengrosshandel.com
https://www.mineral-bosse.de
https://www.edelsteine-neuburg.de
https://www.mineralbox.biz
'._('einklappen').'
 

Koutekite

Pictures (1 Images total)

Koutekit
Views (File:
1592498139
): 237
Koutekit
metallische Aggregate von Koutekit, Mohawk Mine, Mohawk, Keweenaw County, Michigan, USA; BB ~ 1 cm
Copyright: Joy Desor; Contribution: openpit
Location: USA/Michigan/Keweenaw Peninsula/Keweenaw Co./Mohawk/Mohawk Mine
Mineral: Koutekite
Image: 1592498139
License: Usage for Mineralienatlas project only
Koutekit

metallische Aggregate von Koutekit, Mohawk Mine, Mohawk, Keweenaw County, Michigan, USA; BB 1 cm

Copyright: Joy Desor
Contribution: openpit 2020-06-18
Locality: Mohawk Mine / Mohawk / Keweenaw Co. / Keweenaw Peninsula / Michigan / USA

Collectors Summary

Color bläulich-weiß
Streak color schwarz
Lustre Metallglanz
Hardness (Mohs) 3.5
Solubility ++ HCl, HNO3
Crystal System orthorhombisch, Ibam

Chemism

Chemical formula

Cu5As2

Chemical composition

Arsen, Kupfer

Unit weight: 467.574704 u; Number of atoms in the formula: 7

Info

Empirical formula:

Cu5As2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Copper

Cu

67.95

5

71.43

63.5463000

317.7315000

Arsenic

As

32.05

2

28.57

74.9216020

149.8432040

Analysis wt%

Cu : 67.95, As : 32.05 (Ref: berechnet)

Strunz 9th edition incl. updates

2.AA.10

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
A: Legierungen und legierungsartige Verbindungen
A: Verbindungen von Halbmetallen mit Kupfer (Cu), Silber (Ag), Gold (Au)
10:Domeykit-Gruppe

Lapis Classification

II/A.01-040

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
A: Legierungen und legierungsartige Verbindungen
1: mit Kupfer, Silber, Gold und Nickel

Classification by Hölzel

2.AA.150

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

Dana 8th edition

02.03.01.01

02: Sulfide Minerals
03: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=5:2

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

bläulich-weiß

Streak color

schwarz

Change in color

blaugrau in reflektiertem Licht

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Pleochroism

sehr stark

Reflectivity: (Lambda nm) ↓, ↑, Ø

(440) 45.90, 46.40, 46.15
(460) 44.60, 43.40, 44.00
(480) 43.00, 41.40, 42.20
(500) 41.50, 39.20, 40.35
(520) 40.00, 37.60, 38.80
(540) 38.90, 36.00, 37.45
(560) 38.00, 34.50, 36.25
(580) 37.60, 33.40, 35.50
(600) 37.20, 32.20, 34.70
(620) 37.40, 31.40, 34.40
(640) 37.60, 30.70, 34.15
(660) 38.00, 30.30, 34.15
(680) 38.50, 29.90, 34.20
(700) 39.20, 29.80, 34.50

Reflection chart Koutekite

Reflectivity Ø

37.63

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

72

Space Group

Ibam

Cell parameters a (Å)

5.977

Cell parameters b (Å)

11.577

Cell parameters c (Å)

5.491

Cell parameters a/b or c/a

0.516

Cell parameters c/b

0.474

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

379.954

X-Ray Powder Diffraction

4.490(10),
4.141(10),
3.568(20),
3.340(20),
2.580(30),
2.089(80),
2.044(90),
2.001(100)

XRD chart Koutekite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

3.5

VHN (Hardness Vickers)

147 (25g)

Density (g/cm³)

8.109 (berechnet) 8.48 (gemessen)

8.173 ( ρ calc. Mineralienatlas )

Instability

++ HCl, HNO3

Preface

Author (Name, Year)

Johan, 1958

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 274

Other languages

German

Koutekit

Spanish

Koutekita

French

Koutekite

English

Koutekite

Simplified Chinese

六方砷铜矿

CNMNC symbol

Symbol

Kou

Locations with GPS information

IDs

GUSID (Global unique identifier short form) uxOwzuCrMESYrLSXPxl5VQ
GUID (Global unique identifier) CEB013BB-ABE0-4430-98AC-B4973F197955
Database ID 2045