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Chatkalite (Chatkalit)

Collectors Summary

Color blass rose
Lustre Metallglanz
Hardness (Mohs) 4.5
Crystal System tetragonal, P4m2

Chemism

Chemical formula

Cu6Fe2+Sn2S8

Chemical composition

Eisen, Kupfer, Zinn, Schwefel

Unit weight: 931.0684 u; Number of atoms in the formula: 17

Info

Empirical formula:

Cu6FeSn2S8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

27.55

8

47.06

32.0655000

256.5240000
Iron

Fe

6.00

1

5.88

55.8452000

55.8452000
Copper

Cu

40.95

6

35.29

63.5463000

381.2778000
Tin

Sn

25.50

2

11.76

118.7107000

237.4214000

Analysis wt%

Ø Cu : 44.02, Fe : 2.88, Zn : 2.85, Sn : 14.93, Sb : 5.11, As : 1.69, Mo : 0.75, S : 28.29 (Ref: Mineralogicheskii Zhurnal 81)

Strunz 9th edition incl. updates

2.CB.20

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.
20:Mawsonit-Gruppe

Lapis Classification

II/C.08-010

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

Classification by Hölzel

2.CB.575

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
B: With Zn,Cu (etc), Coordination Number ~[4] Framework of Cornersharing Tetrahedra: Sphalerite-Germanite-Family
5: Germanite-Colusite-Mawsonite-Group

Dana 8th edition

02.09.03.02

02: Sulfide Minerals
09: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
03: Mawsonite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

blass rose

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Anisotropism

schwach

Reflectivity: (Lambda nm) ↓, ↑, Ø

(440) 24.40, 25.00, 24.70
(460) 25.00, 25.60, 25.30
(480) 25.60, 26.20, 25.90
(500) 26.20, 26.70, 26.45
(520) 26.70, 27.20, 26.95
(540) 27.20, 27.60, 27.40
(560) 27.60, 28.10, 27.85
(580) 27.90, 28.60, 28.25
(600) 28.30, 29.00, 28.65
(620) 28.50, 29.30, 28.90
(640) 28.60, 29.40, 29.00
(660) 28.60, 29.50, 29.05
(680) 28.40, 29.30, 28.85
(700) 27.90, 28.60, 28.25
Reflection chart Chatkalite

Reflectivity Ø

27.54

Crystallography

Crystal System

tetragonal

Class (H-M)

42m

Space Group number

115

Space Group

P4m2

Cell parameters a (Å)

7.61

Cell parameters b (Å)

-

Cell parameters c (Å)

5.373

Cell parameters a/b or c/a

0.706

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

1

Volumne (ų)

311.162

X-Ray Powder Diffraction

3.11(80),
2.87(30),
2.70(20),
2.55(20),
1.904(100),
1.625(40),
1.568(40),
1.058(30)
XRD chart Chatkalite

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

Physical Properties

Hardness (Mohs)

4.5

VHN (Hardness Vickers)

274 (20g)

Density (g/cm³)

5

4.968 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Usbekistan/Toshkent (Tashkent), Provinz/Angren/Chatkal-Kuraminskii-Gebiet/Kochbulak Gold-Lagerstätte

Preface

Name from

der Typlokalität

Author (Name, Year)

Kovalenker & Evstigneeva & Malov & Vyal'sov, 1981

References

Mineralogicheskiy Zhurnal 3 (1981) (5), 79

Other languages

German

Chatkalit

Spanish

Chatkalita

French

Chatkalite

English

Chatkalite

Russian

Чаткалит

CNMNC (IMA)-Number

IMA 1981-004

CNMNC symbol

Symbol

Ctk

Locations with GPS information

IDs

GUSID (Global unique identifier short form) Unbjf6aB0kCOBmwAcW_beQ
GUID (Global unique identifier) 7FE37652-81A6-40D2-8E06-6C00716FDB79
Database ID 695