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Comblainite (Comblainit)

Pictures (1 Images total)

feinkristalliner türkisfarbener Comblainit
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feinkristalliner türkisfarbener Comblainit
von der Silberhütte Lautenthal bei Langelsheim, Niedersachsen, Deutschland; BB = 2,0 mm
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A037475, Donator: Dietrich Hoffmeister
Location: Deutschland/Niedersachsen/Goslar, Landkreis/Langelsheim/Lautenthal/Lautenthaler Hütte
Mineral: Comblainite
Image: 1500802687
License: Usage for Mineralienatlas project only
feinkristalliner türkisfarbener Comblainit (SNr: A037475)

von der Silberhütte Lautenthal bei Langelsheim, Niedersachsen, Deutschland; BB = 2,0 mm
Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2017-07-23
Locality: Lautenthaler Hütte / Lautenthal / Langelsheim / Goslar, Landkreis / Niedersachsen / Deutschland

You find additional Comblainit specimen at the Geolitho Museum

Collectors Summary

Color türkisblau
Solubility +++ Säuren
Crystal System hexagonal,

Chemism

Chemical formula

Ni4Co3+2(CO3)(OH)12·3H2O

Chemical composition

Kobalt, Nickel, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 670.7836478 u; Number of atoms in the formula: 43

Info

Empirical formula:

Ni4Co2(CO3)(OH)12·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.70

18

41.86

1.0079470

18.1430460
Carbon

C

1.79

1

2.33

12.0107800

12.0107800
Oxygen

O

42.93

18

41.86

15.9994300

287.9897400
Cobalt

Co

17.57

2

4.65

58.9332009

117.8664018
Nickel

Ni

35.00

4

9.30

58.6934200

234.7736800

Analysis wt%

NiO : 41.23, Co2O3 : 22.88, CO2 : 6.07, H2O : 29.82 (Ref: berechnet)

Strunz 9th edition incl. updates

5.DA.50

5: Carbonate (Carbonate, Nitrate)
D: Carbonate mit weitere Anionen, mit H2O
A: Mit mittelgroßen [Kationen]
50:Hydrotalkit-Gruppe

Lapis Classification

V/E.03-070

V: NITRATE, CARBONATE UND BORATE
E: Wasserhaltige Carbonate, mit fremden Anionen
3: Hydrotalkit-Gruppe

Classification by Hölzel

5.DD.145

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
D: Carbonates (+Anions +Water)
D: Hydrotalcite Series
1: Chlormagaluminite-Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Hydrotalcite Supergroup  ⇒ Quintinite Group

Optical Properties

Color

türkisblau

max. Birefringence

0.006
Birefringence chart\! Comblainite title=Birefringence chart Comblainite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.690

RI value γ / ε

1.684

Ri mean

1.688

2V angle

Uniaxial (-)

Crystallography

Crystal System

hexagonal

Cell parameters a (Å)

3.038

Cell parameters b (Å)

-

Cell parameters c (Å)

22.79

Cell parameters a/b or c/a

7.502

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

0.5

Volumne (ų)

182.159

X-Ray Powder Diffraction

7.64(100),
3.808(50),
2.567(70),
2.278(50),
1.934(40),
1.519(20),
1.489(30)
XRD chart Comblainite

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

Physical Properties

Density (g/cm³)

3.05 (gemessen)

3.057 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Demokratische Republik Kongo/Katanga (Shaba), Provinz/Ober-Katanga (Haut-Katanga), Distrikt/Shinkolobwe (Kasolo)/Shinkolobwe Mine (Kasolo Mine)

Preface

Author (Name, Year)

Piret & Deliens, 1980

References

Bulletin de Minéralogie 103 (1980), 113

IMA group assignments

Other languages

German

Comblainit

Spanish

Comblainita

English

Comblainite

French

Comblainite

CNMNC (IMA)-Number

IMA 1978-009

CNMNC symbol

Symbol

Cob

Locations with GPS information