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Cornetite

Pictures (71 Images total)

Cornetit
Views (File:
1284126537
): 3676, Rating: 9.2
Cornetit
Bildbreite: 1,07 mm; Fundort: Luiswishi, Süden, Katanga (Shaba), Provinz, Demokratische Republik Kongo
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Demokratische Republik Kongo/Katanga (Shaba), Provinz/Ober-Katanga (Haut-Katanga), Distrikt/Luiswishi
Mineral: Cornetite
Image: 1284126537
Rating: 9.2 (votes: 10)
License: Usage for Mineralienatlas project only
Cornetit

Bildbreite: 1,07 mm; Fundort: Luiswishi, Süden, Katanga (Shaba), Provinz, Demokratische Republik Kongo
Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-09-10
Locality: Luiswishi / Ober-Katanga (Haut-Katanga), Distrikt / Katanga (Shaba), Provinz / Demokratische Republik Kongo
blaue Cornetit XX
Views (File:
1108596930
): 1208
blaue Cornetit XX
Bildbreite: 10 mm; Fundort: Star of the Congo Mine, Lubumbashi, Shaba Cu belt, Shaba, Kongo
Copyright: Dominik Schläfli; Contribution: Mineralienatlas
Collection: Dominik Schläfli
Location: Demokratische Republik Kongo/Katanga (Shaba), Provinz/Ober-Katanga (Haut-Katanga), Distrikt/L'Etoile du Congo Mine (Star Of The Congo Mine; Kalukuluku Mine)
Mineral: Cornetite
Image: 1108596930
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
blaue Cornetit XX

Bildbreite: 10 mm; Fundort: Star of the Congo Mine, Lubumbashi, Shaba Cu belt, Shaba, Kongo
Collection: Dominik Schläfli
Copyright: Dominik Schläfli
Contribution: Mineralienatlas 2005-02-17
Locality: L'Etoile du Congo Mine (Star Of The Congo Mine; Kalukuluku Mine) / Ober-Katanga (Haut-Katanga), Distrikt / Katanga (Shaba), Provinz / Demokratische Republik Kongo
Cornetit
Views (File:
1224588900
): 2105
Cornetit
Bildbreite: 3 mm; Fundort: L’Etoile du Congo Mine, Elisabethville, Katanga, Kongo
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Demokratische Republik Kongo/Katanga (Shaba), Provinz/Ober-Katanga (Haut-Katanga), Distrikt/L'Etoile du Congo Mine (Star Of The Congo Mine; Kalukuluku Mine)
Mineral: Cornetite
Image: 1224588900
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Cornetit

Bildbreite: 3 mm; Fundort: L’Etoile du Congo Mine, Elisabethville, Katanga, Kongo
Copyright: Stephan Wolfsried
Contribution: Hg 2008-10-21
Locality: L'Etoile du Congo Mine (Star Of The Congo Mine; Kalukuluku Mine) / Ober-Katanga (Haut-Katanga), Distrikt / Katanga (Shaba), Provinz / Demokratische Republik Kongo
Cornetit
Views (File:
1436639827
): 957
Cornetit
Blockig blaue Kristalle, Bb = 4,5mm; Fundort: L'Etoile du Congo Mine (Star of the Congo Mine), Lubumbashi, Katanga Copper Crescent, Katanga, Demokratische Republik Kongo.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A035857, Donator: anatase2
Location: Demokratische Republik Kongo/Katanga (Shaba), Provinz/Ober-Katanga (Haut-Katanga), Distrikt/L'Etoile du Congo Mine (Star Of The Congo Mine; Kalukuluku Mine)
Mineral: Cornetite
Image: 1436639827
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Cornetit (SNr: A035857)

Blockig blaue Kristalle, Bb = 4,5mm; Fundort: L'Etoile du Congo Mine (Star of the Congo Mine), Lubumbashi, Katanga Copper Crescent, Katanga, Demokratische Republik Kongo.
Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2015-07-11
Locality: L'Etoile du Congo Mine (Star Of The Congo Mine; Kalukuluku Mine) / Ober-Katanga (Haut-Katanga), Distrikt / Katanga (Shaba), Provinz / Demokratische Republik Kongo
blaue Cornetit xx
Views (File:
1172669682
): 5418
blaue Cornetit xx
Bildbreite: 10mm; Fundort: Demokratische Republik Kongo
Copyright: thothie; Contribution: thothie
Collection: thothie
Location: Demokratische Republik Kongo
Mineral: Cornetite
Image: 1172669682
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
blaue Cornetit xx

Bildbreite: 10mm; Fundort: Demokratische Republik Kongo
Collection: thothie
Copyright: thothie
Contribution: thothie 2007-02-28
Locality: Demokratische Republik Kongo
Cornetit
Views (File:
1287395467
): 459, Rating: 7.75
Cornetit
Größe: 1,13 mm; Fundort: L’Etoile du Congo Mine, Elisabethville, Katanga, Kongo
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Demokratische Republik Kongo/Katanga (Shaba), Provinz/Ober-Katanga (Haut-Katanga), Distrikt/L'Etoile du Congo Mine (Star Of The Congo Mine; Kalukuluku Mine)
Mineral: Cornetite
Image: 1287395467
Rating: 7.75 (votes: 4)
License: Usage for Mineralienatlas project only
Cornetit

Größe: 1,13 mm; Fundort: L’Etoile du Congo Mine, Elisabethville, Katanga, Kongo
Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-10-18
Locality: L'Etoile du Congo Mine (Star Of The Congo Mine; Kalukuluku Mine) / Ober-Katanga (Haut-Katanga), Distrikt / Katanga (Shaba), Provinz / Demokratische Republik Kongo

You find additional Cornetite specimen at the Geolitho Museum

Collectors Summary

Color dunkelblau, schwarzblau
Streak color blau
Hardness (Mohs) 4.5
Solubility +++ HCl
Crystal System orthorhombisch, Pbca

Chemism

Chemical formula

Cu3(PO4)(OH)3

Chemical composition

Kupfer, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 336.6325122 u; Number of atoms in the formula: 14

Info

Empirical formula:

Cu3(PO4)(OH)3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.90

3

21.43

1.0079470

3.0238410
Oxygen

O

33.27

7

50.00

15.9994300

111.9960100
Phosphorus

P

9.20

1

7.14

30.9737612

30.9737612
Copper

Cu

56.63

3

21.43

63.5463000

190.6389000

Analysis wt%

CuO : 70.89, P2O5 : 21.08, H2O : 8.03 (Ref: berechnet)

Strunz 9th edition incl. updates

8.BE.15

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
E: Mit ausschließlich mittelgroßen [Kationen] (OH, etc.):RO4 > 2:1
15:Cornetit-Gruppe

Lapis Classification

VII/B.13-010

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
13: Mittelgroße Kationen: Mg-Mn-Fe-Cu-Zn

Classification by Hölzel

8.BD.100

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
D: Phosphates, C medium, V: 2, OH/XO4 ò 3/1

Dana 8th edition

41.03.02.01

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
03: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A B)3 (XO4) Zq

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

dunkelblau, schwarzblau

Streak color

blau

max. Birefringence

0.055
Birefringence chart\! Cornetite title=Birefringence chart Cornetite

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

1.765

RI value β

1.81

RI value γ / ε

1.82

Ri mean

1.798

2V angle

Biaxial (-) 33°

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

61

Space Group

Pbca

Cell parameters a (Å)

10.86

Cell parameters b (Å)

14.07

Cell parameters c (Å)

7.10

Cell parameters a/b or c/a

0.772

Cell parameters c/b

0.505

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volumne (ų)

1084.881

X-Ray Powder Diffraction

5.48(50),
5.07(60),
4.29(90),
3.68(70),
3.17(80),
3.04(100),
2.95(50),
2.06(70)
XRD chart Cornetite

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)

4.5

VHN (Hardness Vickers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.10 (gemessen)

4.122 ( ρ calc. Mineralienatlas )

Instability

+++ HCl

(Co-)Type locality

(Co-)Type locality

Demokratische Republik Kongo/Katanga (Shaba), Provinz/Ober-Katanga (Haut-Katanga), Distrikt/L'Etoile du Congo Mine (Star Of The Congo Mine; Kalukuluku Mine)

Preface

Author (Name, Year)

Buttgenbach, 1916

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: H302: Gesundheitsschädlich bei Verschlucken., P264: Nach Gebrauch … gründlich waschen., P270: Bei Gebrauch nicht essen, trinken oder rauchen., P301+P312: Bei Verschlucken: Bei Unwohlsein Giftinformationszentrum, Arzt oder … anrufen., P330: Mund ausspülen., P501: Inhalt / Behälter … zuführen.

References

Handbook of Mineralogy (Anthony et al.), 4 (2000), 127

Other languages

German

Cornetit

Spanish

Cornetita

English

Cornetite

French

Cornetite

Russian

Корнетит

CNMNC symbol

Symbol

Cne

Locations with GPS information