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Isocubanite (Isocubanit)

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Isocubanit
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Isocubanit
isometrische Aggregate von Isocubanit, Ashadze 2, Mittelatlantischer Rücken (3260 m Tiefe); BB < 1 cm, analysiert
Copyright: mintreasure.com; Contribution: openpit
Location: Atlantischer Ozean/Mittelatlantischer Rücken
Mineral: Isocubanite
Image: 1668448959
License: Usage for Mineralienatlas project only
Isocubanit

isometrische Aggregate von Isocubanit, Ashadze 2, Mittelatlantischer Rücken (3260 m Tiefe); BB < 1 cm, analysiert
Copyright: mintreasure.com
Contribution: openpit 2022-11-14
Locality: Mittelatlantischer Rücken / Atlantischer Ozean

Collectors Summary

Color bronzebraun, vergleichbar zu Bornit
Streak color rosabraun in reflektiertem licht
Lustre Metallglanz
Hardness (Mohs) 3.5
Crystal System kubisch, P43m

Chemism

Chemical formula

CuFe2S3

Chemical composition

Eisen, Kupfer, Schwefel

Unit weight: 271.4332 u; Number of atoms in the formula: 6

Info

Empirical formula:

CuFe2S3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

35.44

3

50.00

32.0655000

96.1965000
Iron

Fe

41.15

2

33.33

55.8452000

111.6904000
Copper

Cu

23.41

1

16.67

63.5463000

63.5463000

Analysis wt%

Ø Cu : 21.16, Zn : 0.93, Fe : 42.06, S : 35.66 (Ref: Mineralogical Magazine 88)

Strunz 9th edition incl. updates

2.CB.55

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.
55:Cubanit-Gruppe

Lapis Classification

II/C.04-050

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

Classification by Hölzel

2.CB.850

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
8: Cubanite-Argentopyrite-Group

Dana 8th edition

02.09.13.03

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

bronzebraun, vergleichbar zu Bornit

Streak color

rosabraun in reflektiertem licht

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Anisotropism

isotropisch

Reflectivity: (Lambda nm) ↓, ↑, Ø

(400) 20.90, , 20.90
(420) 22.70, , 22.70
(440) 24.60, , 24.60
(460) 26.90, , 26.90
(480) 29.20, , 29.20
(500) 31.40, , 31.40
(520) 33.20, , 33.20
(540) 34.80, , 34.80
(560) 36.20, , 36.20
(580) 37.40, , 37.40
(600) 38.20, , 38.20
(620) 39.10, , 39.10
(640) 39.70, , 39.70
(660) 40.30, , 40.30
(680) 40.90, , 40.90
(700) 41.30, , 41.30
Reflection chart Isocubanite

Reflectivity Ø

35.55

Crystallography

Crystal System

kubisch

Class (H-M)

43m

Space Group number

215

Space Group

P43m

Cell parameters a (Å)

5.303

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

1.3

Volumne (ų)

149.13

X-Ray Powder Diffraction

3.055(100),
2.639(10),
1.870(90),
1.592(80),
1.321(20),
1.215(60),
1.206(20),
1.081(40)
XRD chart Isocubanite

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)

3.5

VHN (Hardness Vickers)

175 (100g)

Density (g/cm³)

3.98 (berechnet)

3.929 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Pazifischer Ozean/Ostpazifischer Rücken/Juan-de-Fuca-Rücken/TAG-Hügel (EPR 21° N)

Preface

Author (Name, Year)

Caye & Cervelle & Cesbron & Oudin & Picot & Pillard, 1988

References

Mineralogical Magazine 52 (1988), 509

Other languages

German

Isocubanit

Spanish

Isocubanita

French

Isocubanite

English

Isocubanite

Russian

Изокубанит

Simplified Chinese

等方黄铜矿

Alternative Name

English

Chalcopyrrhotite

English

CubaniteII

English

Cubiccubanite

Isochalcopyrit

French

Isochalcopyrite

CNMNC (IMA)-Number

IMA 1983-E

CNMNC symbol

Symbol

Icb

Locations with GPS information