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Chalcothallite

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Chalkothallit
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Chalkothallit

Tasseg, Illimaussaq, Grönland. BB: 1,3cm; Ex. R. Feigl Sammlung.
Copyright: Mabu
Contribution: Mabu 2019-02-02
Locality: Tasseq-Hänge (Taseq-Hänge) / Tasseq / Ilimaussaq-Komplex / Narsaq / Kommune Kujalleq / Grönland

Collectors Summary

Color bleigrau, schwarz-met.
Streak color schwarz
Hardness (Mohs) 2.00 - 2.50
Crystal System tetragonal, I4/mmm

Chemism

Chem­ical formula

(Tl,K)2Cu5.5(Fe,Ag)SbS4

Chem­ical com­po­si­tion

Antimon, Eisen, Kupfer, Silber, Thallium, Kalium, Schwefel

Unit weight: 994.50184 u; Number of atoms in the formula: 13.5

Info

Empirical formula:

(Tl0.75K0.25)2Cu5.5(Fe0.75Ag0.25)SbS4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

12.90

4

29.63

32.0655000

128.2620000
Potassium

K

1.97

0.5

3.70

39.0983100

19.5491550
Iron

Fe

4.21

0.75

5.56

55.8452000

41.8839000
Copper

Cu

35.14

5.5

40.74

63.5463000

349.5046500
Silver

Ag

2.71

0.25

1.85

107.8682200

26.9670550
Antimony

Sb

12.24

1

7.41

121.7601000

121.7601000
Thallium

Tl

30.83

1.5

11.11

204.3833200

306.5749800

Anal­y­sis wt%

Tl : 38.07, Cu : 40.58, Fe : 3.79, S : 12.06, Sb : 3.93 (Ref: Medd.Gr.67)

Strunz 9th edi­tion incl. updates

2.BD.40

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
B: Metallsulfide, M : S > 1 : 1 (hauptsächlich 2 : 1)
D: mit Quecksilber (Hg), Thallium (Tl)
40:Chalkothallit-Gruppe

Lapis Clas­sifica­tion

II/F.04-006

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
F: Sulfide mit nichtmetallischem Charakter
4: Alkalisulfide

Clas­sifica­tion by Hölzel

2.BD.360

2: SULFIDES
B: Sulfides (etc) with Me/S > 1/1 (mostly 2/1)
D: With Hg,Tl,(Na,K)
3: Thalcusite-Sabatierite-Group (with Tl,K)

Dana 8th edi­tion

03.02.07.01

03: Sulfides - Sulfosalts
02: Sulfides - Sulfosalts where z/y = 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

bleigrau, schwarz-met.

Streak color

schwarz

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

4/mmm

Space Group number

139

Space Group

I4/mmm

Cell param­e­ters a (Å)

3.827

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

34.280

Cell param­e­ters a/b or c/a

8.957

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

502.062

X-Ray Pow­der Diffrac­tion

3.65(30),
3.43(30),
3.02(100),
2.59(30),
2.45(30),
2.30(30),
2.17(40),
1.917(50)
XRD chart Chalcothallite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.00 - 2.50

VHN (Hard­ness Vick­ers)

71 (50g)

Density (g/cm³)

6.6 (gemessen)

6.578 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Grönland/Kommune Kujalleq/Narsaq/Ilimaussaq-Komplex/Tasseq/Nakalak (Nakalaq; Nakkaalaaq)

Grönland/Kommune Kujalleq/Narsaq/Ilimaussaq-Komplex/Tasseq/Tasseq-Hänge (Taseq-Hänge)

Preface

Author (Name, Year)

Semenov & Sørensen & Bezsmertnaya & Novorossova, 1967

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 91

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

Chalcothallite

(Tl,K)2Cu5.5(Fe,Ag)SbS4

tetragonal : 4/mmm : I4/mmm

2.BD.40

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

Rohaite

TlCu5SbS2

II/F.04-005

Chalcothallite

(Tl,K)2Cu5.5(Fe,Ag)SbS4

tetragonal : 4/mmm : I4/mmm

II/F.04-006

Colimaite

K3VS4

orthorhombisch : mmm : Pnma

II/F.04-008

Murunskite

K2Cu3FeS4

II/F.04-010

Bukovite

Tl2Cu3FeSe4

tetragonal : 4/mmm : I4/mmm

II/F.04-020

Thalcusite

(Cu,Fe)4Tl2S4

II/F.04-030

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

Thalcusite

(Cu,Fe)4Tl2S4

2.BD.300

Bukovite

Tl2Cu3FeSe4

tetragonal : 4/mmm : I4/mmm

2.BD.320

Murunskite

K2Cu3FeS4

2.BD.330

Chvilevaite

Na(Cu,Fe,Zn)2S2

trigonal : 3m : P3m1

2.BD.340

Rohaite

TlCu5SbS2

2.BD.350

Chalcothallite

(Tl,K)2Cu5.5(Fe,Ag)SbS4

tetragonal : 4/mmm : I4/mmm

2.BD.360

Sabatierite

Cu6TlSe4

2.BD.380

Crookesite

Cu7(Tl,Ag)Se4

tetragonal : 4 : I4

2.BD.390

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

Enargite

Cu3AsS4

orthorhombisch : mm2 : Pmn21

 03.02.01.01

Luzonite

Cu3AsS4

tetragonal : 42m : I42m

 03.02.02.01

Famatinite

Cu3SbS4

tetragonal : 42m : I42m

 03.02.02.02

Permingeatite

Cu3SbSe4

tetragonal : 42m : I42m

 03.02.02.03

Sulvanite

Cu3VS4

kubisch : 43m : P43m

 03.02.03.01

Stephanite

Ag5SbS4

orthorhombisch : mm2 : Cmc21

 03.02.04.01

Selenostephanite

Ag5SbSe4

orthorhombisch : 222 : P212121

 03.02.04.02

Hauchecornite

Ni9Bi(Sb,Bi)S8

tetragonal : 4/mmm : P4/mmm

 03.02.05.01

Bismutohauchecornite

Ni9Bi2S8

tetragonal : 4/mmm : P4/mmm

 03.02.05.02

Tellurohauchecornite

Ni9BiTeS8

tetragonal : 4/mmm : P4/mmm

 03.02.05.03

Arsenohauchecornite

Ni18Bi3AsS16

tetragonal : 4/mmm : I4/mmm

 03.02.05.04

Tučekite

Ni9Sb2S8

tetragonal : 4/mmm : P4/mmm

 03.02.05.05

Arcubisite

Ag6CuBiS4

 03.02.06.01

Chalcothallite

(Tl,K)2Cu5.5(Fe,Ag)SbS4

tetragonal : 4/mmm : I4/mmm

 03.02.07.01

Chaméanite

(Cu,Fe)4As(Se,S)4

 03.02.08.01

Fangite

Tl3AsS4

orthorhombisch : mmm : Pnma

 03.02.09.01

Alternative Name

German

Chalcothallit

Spanish

Chalcothallita

CNMNC (IMA)-Number

IMA 1966-008

CNMNC symbol

Symbol

Ccth

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

German pages

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Google-Bilder-Suche - search for: Chalkothallit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Chalkothallit

English pages

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RRUFF - References and PDF downloads - search for: Chalcothallite
American-Mineralogist-Crystal-Structure-Database - search for: Chalcothallite
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Russian pages

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German pages

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