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Delafossite

Pictures (28 Images total)

Delafossit
Views (Image: 1189366585): 3114
Delafossit

auf Kupfer; Bildbreite: 3 mm; Fundort: Grube Clara, Wolfach, Schwarzwald

Collection: Stephan Wolfsried
Copyright: Stephan Wolfsried
Contribution: Hg 2007-09-09
Delafossit xx
Views (Image: 1394394388): 844
Delafossit xx

braunschwarze Delafossit xx mit grünem Malachit überzogen; Grube Clara; Schwarzwald; Deutschland; Bildbreite 8mm

Collection: mika
Copyright: mika
Contribution: mika 2014-03-09
Delafossit
Views (Image: 1189366429): 1920
Delafossit

Bildbreite: 3 mm; Fundort: Grube Clara, Wolfach, Schwarzwald

Collection: Stephan Wolfsried
Copyright: Stephan Wolfsried
Contribution: Hg 2007-09-09
Delafossit
Views (Image: 1288612906): 2536
Delafossit

Bildbreite: 4,4mm; Fundort: Grube Clara, Wolfach, Schwarzwald, Deutschland

Collection: Wilhelm Göbel
Copyright: loparit
Contribution: loparit 2010-11-01
Delafossit
Views (Image: 1393928334): 958
Delafossit

Jean Baptiste, Kamariza, Laurion (Lavrion), Attika, Griechenland. Bildbreite 0,4 mm

Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2014-03-04
Delafossit
Views (Image: 1430670449): 789
Delafossit (SNr: A034237)

Kugeliger grünlichgrauer Kristall, BB = 2,3 mm, Fundort: Madonna di Fucinaia, Campiglia Marittima, Provinz Livorno, Toskana, Italien.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2015-05-03

Collectors Summary

Color bräunlich rose
Streak color schwarz
Hardness (Mohs) 5.5
Solubility +++ HCl, - HNO3
Crystal System trigonal, R3m

Additional information / Summary

Chemism

Chemical formula

Cu1+Fe3+O2

Chemical composition

Eisen, Kupfer, Sauerstoff

Unit weight: 151.39036 u; Number of atoms in the formula: 4

Info

Empirical formula:

CuFeO2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

21.14

2

50.00

15.9994300

31.9988600

Iron

Fe

36.89

1

25.00

55.8452000

55.8452000

Copper

Cu

41.98

1

25.00

63.5463000

63.5463000

Analysis wt%

CuO : 52.54, FeO : 47.46 (Ref: berechnet)

Strunz 9th edition incl. updates

4.AB.15

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
A: Metall: Sauerstoff = 2:1 und 1:1
B: [Kation]:[Anion] (M:O) = 1:1 (und bis 1:1.25); mit nur kleinen bis mittelgroßen Kationen
15:Delafossit-Gruppe

Lapis Classification

IV/A.05-030

IV: OXIDE
A: Oxide mit Verhältnis Metall : Sauerstoff = 1:1 und 2:1 (M2O, MO)

Classification by Hölzel

4.AC.100

4: OXIDES
A: R2O and RO
C: Double Oxides

Dana 8th edition

07.01.01.01

07: Multiple Oxides
01: Multiple Oxides where A B X2 containing copper

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

bräunlich rose

Streak color

schwarz

Diaphaneity (Transparency)

opak

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

166

Space Group

R3m

Cell parameters a (Å)

3.04

Cell parameters b (Å)

-

Cell parameters c (Å)

17.12

Cell parameters a/b or c/a

5.632

Cell parameters c/b

-

Z

3

Volumne (ų)

137.019

X-Ray Powder Diffraction

2.89(50),
2.51(100),
2.24(30),
1.667(50),
1.520(50),
1.439(50),
1.342(50),
1.300(30)

XRD chart Delafossite

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)

5.5

VHN (Hardness Vickers)

450 (100g)

Density (g/cm³)

5.41

5.504 ( ρ calc. Mineralienatlas )

Instability

+++ HCl, - HNO3

Preface

Author (Name, Year)

Friedel, 1873

References

Handbook of Mineralogy (Anthony et al.), 3 (1997),159

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

Delafossite

Cu1+Fe3+O2

trigonal : 3m : R3m

4.AB.15

Mcconnellite

CuCrO2

trigonal : 3m : R3m

4.AB.15

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

Tenorite

CuO

monoklin : 2/m : C2/c

IV/A.05-010

Paramelaconite

Cu21+Cu22+O3

tetragonal : 4/mmm : I41/amd

IV/A.05-020

Delafossite

Cu1+Fe3+O2

trigonal : 3m : R3m

IV/A.05-030

Mcconnellite

CuCrO2

trigonal : 3m : R3m

IV/A.05-040

Crednerite

CuMnO2

monoklin : 2/m : C2/m

IV/A.05-050

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

Delafossite

Cu1+Fe3+O2

trigonal : 3m : R3m

4.AC.100

Mcconnellite

CuCrO2

trigonal : 3m : R3m

4.AC.110

Paramelaconite

Cu21+Cu22+O3

tetragonal : 4/mmm : I41/amd

4.AC.140

Crednerite

CuMnO2

monoklin : 2/m : C2/m

4.AC.160

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

Delafossite

Cu1+Fe3+O2

trigonal : 3m : R3m

07.01.01.01

Mcconnellite

CuCrO2

trigonal : 3m : R3m

07.01.01.02

Crednerite

CuMnO2

monoklin : 2/m : C2/m

07.01.02.01

Other languages

German

Delafossit

Spanish

Delafossita

English

Delafossite

French

Delafossite

Russian

Делафоссит

Japanisch

デラフォス鉱

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

German pages

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