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Tarkianite

Collectors Summary

Color schwarz, in reflektiertem Licht balu-grün, intern keine Reflektionen
Streak color schwarz
Lustre Metallglanz
Hardness (Mohs) 5.5 - 6
Fracture unregelmäßig
Crystal System kubisch, F43m

Chemism

Chem­ical formula

(Cu,Fe)(Re,Mo)4S8

Chem­ical com­po­si­tion

Eisen, Kupfer, Molybdän, Rhenium, Schwefel

Unit weight: 972.708325 u; Number of atoms in the formula: 13

Info

Empirical formula:

(Cu0.75Fe0.25)(Re0.75Mo0.25)4S8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

26.37

8

61.54

32.0655000

256.5240000

Iron

Fe

1.44

0.25

1.92

55.8452000

13.9613000

Copper

Cu

4.90

0.75

5.77

63.5463000

47.6597250

Molybdenum

Mo

9.86

1

7.69

95.9420000

95.9420000

Rhenium

Re

57.43

3

23.08

186.2071000

558.6213000

Anal­y­sis wt%

Re : 55.70, Mo : 11.48, Cu : 5.83, Fe : 1.14, S : 27.06 (Ref: European Journal of Mineralogy 91)

Strunz 9th edi­tion incl. updates

2.DB.30

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
D: Metallsulfide mit M:S = 3:4 und 2:3
B: M:S = 2:3
30:Tarkianit-Gruppe

Lapis Clas­sifica­tion

II/D.14-020

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
D: Sulfide mit Metall : S,Se,Te < 1:1
14: Telluride mit Kupfer, Silber, Gold

Clas­sifica­tion by Hölzel

2.DA.380

2: SULFIDES
D: With Me/S <1/1 and >1/2
A: Me/S=3/4 Thiospinels, etc
3: Thiospinels with PGE

Dana 8th edi­tion

02.10.05.01

02: Sulfide Minerals
10: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=3:4

IMA sta­tus

anerkannt 2003

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

schwarz, in reflektiertem Licht balu-grün, intern keine Reflektionen

Streak color

schwarz

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

2V angle

isotropisch

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(470) 38.0, -, 38.0
(546) 38.9, -, 38.9
(589) 39.2, -, 39.2
(650) 39.3, -, 39.3

Reflection chart Tarkianite

Reflec­tiv­ity Ø

38.85

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

43m

Space Group number

216

Space Group

F43m

Cell param­e­ters a (Å)

9.541

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

868.524

X-Ray Pow­der Diffrac­tion

5.53(100), 2.885(90), 2.389(90), 2.194(70), 1.952(60), 1.841(90), 1.690(80)

XRD chart Tarkianite

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

Physical Properties

Hard­ness (Mohs)

5.5 - 6

VHN (Hard­ness Vick­ers)

561 (15g)

Density (g/cm³)

7.3

7.438 ( ρ calc. Mineralienatlas )

Frac­ture

unregelmäßig

Tenac­ity

spröde

Preface

Name from

Professor Mahmud Tarkian, von der Universität in Hamburg, der als erster das synthetische Material und seine Kristallstruktur beschrieb.

Author (Name, Year)

Kojonen & Roberts & Isomäki & Knauf & Johanson & Pakkanen, 2004

References

Kojonen, K.K. et al. (2004), Canadian Mineralogist: 42: 539-544

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

Tarkianite

(Cu,Fe)(Re,Mo)4S8

kubisch : 43m : F43m

2.DB.30

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

Cameronite

Cu5-x(Cu,Ag)3+xTe10 {x=0.43}

monoklin : 2/m : C2/c

II/D.14-010

Tarkianite

(Cu,Fe)(Re,Mo)4S8

kubisch : 43m : F43m

II/D.14-020

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

Cuprorhodsite

CuRh2S4

kubisch : m3m : Fd3m

2.DA.300

Ferrorhodsite

(Fe,Cu)(Rh,Ir,Pt)2S4

kubisch : m3m : Fd3m

2.DA.310

Cuproiridsite

CuIr2S4

kubisch : m3m : Fd3m

2.DA.320

Malanite

Cu(Pt,Ir)2S4

kubisch : m3m : Fd3m

2.DA.340

Xingzhongite

(Pb,Cu,Fe)(Ir,Pt,Rh)2S4

kubisch : m3m : Fd3m

2.DA.370

Tarkianite

(Cu,Fe)(Re,Mo)4S8

kubisch : 43m : F43m

2.DA.380

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

Linnaeite

Co2+Co3+2S4

kubisch : m3m : Fd3m

02.10.01.01

Carrollite

Cu(Co,Ni)2S4

kubisch : m3m : Fd3m

02.10.01.02

Fletcherite

Cu(Ni,Co)2S4

kubisch : m3m : Fd3m

02.10.01.03

Tyrrellite

(Cu,Co,Ni)3Se4

kubisch : m3m : Fd3m

02.10.01.04

Bornhardtite

Co2+Co3+2Se4

kubisch : m3m : Fd3m

02.10.01.05

Siegenite

(Ni,Co)3S4

kubisch : m3m : Fd3m

02.10.01.06

Polydymite

NiNi2S4

kubisch : m3m : Fd3m

02.10.01.07

Violarite

Fe2+Ni3+2S4

kubisch : m3m : Fd3m

02.10.01.08

Trüstedtite

Ni3Se4

kubisch : m3m : Fd3m

02.10.01.09

Greigite

Fe2+Fe3+2S4

kubisch : m3m : Fd3m

02.10.01.10

Daubréelite

Fe2+Cr2S4

kubisch : m3m : Fd3m

02.10.01.11

Indite

Fe2+In2S4

kubisch : m3m : Fd3m

02.10.01.12

Kalininite

ZnCr2S4

kubisch : m3m : Fd3m

02.10.01.13

Florensovite

Cu(Cr1.5Sb0.5)S4

kubisch : m3m : Fd3m

02.10.01.14

Cuproiridsite

CuIr2S4

kubisch : m3m : Fd3m

02.10.01.15

Cuprorhodsite

CuRh2S4

kubisch : m3m : Fd3m

02.10.01.16

Malanite

Cu(Pt,Ir)2S4

kubisch : m3m : Fd3m

02.10.01.17

Ferrorhodsite

(Fe,Cu)(Rh,Ir,Pt)2S4

kubisch : m3m : Fd3m

02.10.01.18

Cadmoindite

CdIn2S4

kubisch : m3m : Fd3m

02.10.01.19

Wilkmanite

Ni3Se4

monoklin : 2/m : I2/m

02.10.02.01

Brezinaite

Cr3S4

monoklin : 2/m : I2/m

02.10.02.02

Heideite

(Fe,Cr)1.15(Ti,Fe)2S4

monoklin : 2/m : I2/m

02.10.02.03

Rhodostannite

(Cu,Ag)2FeSn3S8

tetragonal : 4/m : I41/a

02.10.03.01

Toyohaite

Ag2FeSn3S8

tetragonal : 4/m : I41/a

02.10.03.02

Konderite

PbCu3Rh8S16

hexagonal : 6/m, 6, 6/mmm, 622, 6m2 : P6/m, P6, P6/mmm, P622, P6m2

02.10.04.01

Inaglyite

PbCu3Ir8S16

hexagonal : 173, 168, 191, 147, 187 : P63, P6, P6/mmm, P622, P6m2

02.10.04.02

Tarkianite

(Cu,Fe)(Re,Mo)4S8

kubisch : 43m : F43m

02.10.05.01

IMA Number

IMA 2003-004

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

German pages

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

English pages

Mindat - search for: Tarkianite
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Handbook-of-Mineralogy - search for: Tarkianite
RRUFF - Raman, XRD and other mineral data - search for: Tarkianite
RRUFF - References and PDF downloads - search for: Tarkianite
American-Mineralogist-Crystal-Structure-Database - search for: Tarkianite
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Russian pages

Webmineral.ru - search for: Таркианит

Mineral Dealer

German pages

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Locations with GPS information