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Nukundamite

Collectors Summary

Color kupferrot
Streak color dunkelgrau
Hardness (Mohs) 3.5
Crystal System trigonal, P3m1
Morphology kupferrote büschlige xx´

Chemism

Chem­ical formula

(Cu,Fe)4S4

Chem­ical com­po­si­tion

Eisen, Kupfer, Schwefel

Unit weight: 374.7461 u; Number of atoms in the formula: 8

Info

Empirical formula:

(Cu0.75Fe0.25)4S4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

34.23

4

50.00

32.0655000

128.2620000

Iron

Fe

14.90

1

12.50

55.8452000

55.8452000

Copper

Cu

50.87

3

37.50

63.5463000

190.6389000

Anal­y­sis wt%

S : 33.51, Fe : 9.64, Cu : 56.51 (Ref: Mineralogical Magazine 79)

Strunz 9th edi­tion incl. updates

2.CA.10

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
A: mit Kupfer (Cu]
10:Nukundamit-Gruppe

Lapis Clas­sifica­tion

II/C.22-040

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

Clas­sifica­tion by Hölzel

2.CA.200

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
A: With Cu Coordination Number ~[3] and ~[4], Layers

Dana 8th edi­tion

02.09.15.01

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

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

kupferrot

Streak color

dunkelgrau

Diaphane­ity (Trans­parency)

opak

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3m

Space Group number

164

Space Group

P3m1

Cell param­e­ters a (Å)

3.782

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

11.187

Cell param­e­ters a/b or c/a

2.958

Cell param­e­ters c/b

-

Z

1

Volumne (ų)

138.576

X-Ray Pow­der Diffrac­tion

3.732(10),
3.273(30),
3.143(100),
2.826(70),
2.796(40),
1.891(60),
1.847(50),
1.568(20)

XRD chart Nukundamite

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

Morphol­ogy

kupferrote büschlige xx´

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

3.5

VHN (Hard­ness Vick­ers)

107 (20g)

Density (g/cm³)

4.3

4.49 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Fidschi/Vanua Levu/Nukundamu/Undu mine

Preface

Author (Name, Year)

Rice & Atkin & Bowles & Criddle, 1979

References

Mineralogical Magazine 43 (1979), 193

Other languages

German

Nukundamit

Spanish

Nukundamita

French

Nukundamite

English

Nukundamite

Russian

Нукундамит

CNMNC (IMA)-Number

IMA 1978-037

CNMNC symbol

Symbol

Nuk

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

German pages

DeWikiPedia - search for: Nukundamit
Google-Bilder-Suche - search for: Nukundamit
Mineralienatlas.de (Forum) - search for: Nukundamit

English pages

Mindat - search for: Nukundamite
Webmineral - search for:Nukundamite
Handbook-of-Mineralogy - search for: Nukundamite
RRUFF - Raman, XRD and other mineral data - search for: Nukundamite
RRUFF - References and PDF downloads - search for: Nukundamite
American-Mineralogist-Crystal-Structure-Database - search for: Nukundamite
Strahlen.org - search for: Nukundamite

Russian pages

Webmineral.ru - search for: Нукундамит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Nukundamit
Crystal-Treasure.com - search for: Nukundamit
Bosse - search for: Nukundamit
Edelsteine Neuburg - Gundolf Fischer - search for: Nukundamit

Locations with GPS information