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Cornwallite (Cornwallit)

Pictures (111 Images total)

Cornwallit
Views (Image: 1423941709): 3420, Rating: 9.55
Cornwallit (SNr: A005370)

Quaderförmige dunkelgrüne Kristalle mit Agardit, BB = 3,90 mm, Fundort: Grube Clara, Oberwolfach, Ortenaukreis, Freiburg, Bezirk, Schwarzwald, Deutschland.

Collection: Lithothek der Münchener Micromounter
Copyright: loparit
Contribution: Münchener Micromounter 2015-02-14
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Cornwallit
Views (Image: 1288613481): 2803
Cornwallit

Bildbreite: 7,49mm; Fundort: Grube Clara, Wolfach, Schwarzwald, Deutschland

Collection: Wilhelm Göbel
Copyright: loparit
Contribution: loparit 2010-11-01
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Cornwallit
Views (Image: 1279211013): 996
Cornwallit

Kristallgröße: 0,42 mm, Fundort: Grube Clara, Wolfach, Schwarzwald, Deutschland

Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: thdun5 2010-07-15
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Agardit mit Cornwallit
Views (Image: 1626095430): 71
Agardit mit Cornwallit

Grube Clara, Oberwolfach; Bb 3 mm; Eigenfund vom Juli 1993.

Collection: Guy Heinen
Copyright: Guy Heinen
Contribution: guyhein 2021-07-12
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Cornwallit
Views (Image: 1229342553): 1811, Rating: 8.7
Cornwallit

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

Copyright: Stephan Wolfsried
Contribution: Hg 2008-12-15
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Cornwallit
Views (Image: 1321357714): 2820, Rating: 9
Cornwallit

Größe: bis 0,2 mm; Fundort: Mazarron, Murcia, Spanien

Copyright: Enrico Bonacina
Contribution: Hg 2011-11-15
Locality: Mazarrón, Bergbaurevier / Mazarrón / Murcia / Spanien

Collectors Summary

Color lichtgrün, dunkelgrün
Streak color grünlichweiß
Hardness (Mohs) 4.5
Solubility +++ Säuren
Crystal System monoklin, P21/c

Chemism

Chem­ical formula

Cu5(AsO4)2(OH)4

Chem­ical com­po­si­tion

Arsen, Kupfer, Sauerstoff, Wasserstoff

Unit weight: 663.599652 u; Number of atoms in the formula: 23

Info

Empirical formula:

Cu5(AsO4)2(OH)4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.61

4

17.39

1.0079470

4.0317880

Oxygen

O

28.93

12

52.17

15.9994300

191.9931600

Copper

Cu

47.88

5

21.74

63.5463000

317.7315000

Arsenic

As

22.58

2

8.70

74.9216020

149.8432040

Anal­y­sis wt%

CuO : 59.95, As2O5 : 30.47, P2O5 : 2.71, H2O : 8.23 (Ref: American Mineralogist 51)

Strunz 9th edi­tion incl. updates

8.BD.05

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
D: Mit ausschließlich mittelgroßen [Kationen] (OH, etc.):RO4 = 2:1
05:Pseudomalachit-Gruppe

Lapis Clas­sifica­tion

VII/B.11-040

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

Clas­sifica­tion by Hölzel

8.BC.210

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
C: Phosphates, C medium, V: 2, OH/XO4=2/1
2: Monoclinic Pseudomalachite-Group

Dana 8th edi­tion

41.04.02.02

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
04: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A B)5 (XO4)2 Zq

IMA sta­tus

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

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

lichtgrün, dunkelgrün

Streak color

grünlichweiß

max. Birefrin­gence

0.04

Birefringence chart\! Cornwallite title=Birefringence chart Cornwallite

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

1.81

RI value β

1.815

RI value γ / ε

1.85

Ri mean

1.825

2V angle

Biaxial (+) 42°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell param­e­ters a (Å)

17.61

Cell param­e­ters b (Å)

5.81

Cell param­e­ters c (Å)

4.60

Cell param­e­ters a/b or c/a

3.031

Cell param­e­ters c/b

0.792

Cell param­e­ters α

90°

Cell param­e­ters β

92.25

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

470.282

X-Ray Pow­der Diffrac­tion

4.82(70),
4.60(80),
3.53(90),
3.22(100),
3.10(90),
3.02(80),
2.478(80),
2.414(90)

XRD chart Cornwallite

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)

4.52 (gemessen)

4.686 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ Säuren

Chem­ical Prop­er­ties and Tests

Justyna Ciesielczuk, Janusz Janeczek, Mateusz Dulski, Tomasz Krzykawski: Pseudomalachite–cornwallite and kipushite–philipsburgite solid solutions: chemical composition and Raman spectroscopy. Eur. J. Mineral. Vol. 28 (2016) S. 555-569.

Preface

Asso­cia­tions

Kupfer, Olivenit, Klinoklas

Name from

Typlokalität

Author (Name, Year)

Zippe, 1846

References

Handbook of Mineralogy (Anthony et al.), 4 (2000), 129

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

Cornubite

Cu5(AsO4)2(OH)4

triklin : 1 : P1

8.BD.05

Ludjibaite

Cu5(PO4)2(OH)4

triklin : 1 : P1

8.BD.05

Cornwallite

Cu5(AsO4)2(OH)4

monoklin : 2/m : P21/c

8.BD.05

Reichenbachite

Cu52+(PO4)2(OH)4

monoklin : 2/m : P21/a

8.BD.05

Pseudomalachite

Cu5(PO4)2(OH)4

monoklin : 2/m : P21/c

8.BD.05

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

Ludjibaite

Cu5(PO4)2(OH)4

triklin : 1 : P1

VII/B.11-010

Pseudomalachite

Cu5(PO4)2(OH)4

monoklin : 2/m : P21/c

VII/B.11-020

Reichenbachite

Cu52+(PO4)2(OH)4

monoklin : 2/m : P21/a

VII/B.11-030

Cornwallite

Cu5(AsO4)2(OH)4

monoklin : 2/m : P21/c

VII/B.11-040

Cornubite

Cu5(AsO4)2(OH)4

triklin : 1 : P1

VII/B.11-050

Turanite

Cu5(VO4)2(OH)4

triklin : 1 : P1

VII/B.11-060

Gatehouseite

Mn52+[(OH)2|PO4]2

orthorhombisch : 222 : P212121

VII/B.11-065

Arsenoclasite

Mn5(AsO4)2(OH)4

orthorhombisch : 222 : P212121

VII/B.11-070

Reppiaite

Mn2+5(VO4)2(OH)4

monoklin : 2/m : C2/m

VII/B.11-080

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

Pseudomalachite

Cu5(PO4)2(OH)4

monoklin : 2/m : P21/c

8.BC.200

Cornwallite

Cu5(AsO4)2(OH)4

monoklin : 2/m : P21/c

8.BC.210

Reichenbachite

Cu52+(PO4)2(OH)4

monoklin : 2/m : P21/a

8.BC.230

Reppiaite

Mn2+5(VO4)2(OH)4

monoklin : 2/m : C2/m

8.BC.240

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

Arsenoclasite

Mn5(AsO4)2(OH)4

orthorhombisch : 222 : P212121

41.04.01.01

Gatehouseite

Mn52+[(OH)2|PO4]2

orthorhombisch : 222 : P212121

41.04.01.02

Cornubite

Cu5(AsO4)2(OH)4

triklin : 1 : P1

41.04.02.01

Cornwallite

Cu5(AsO4)2(OH)4

monoklin : 2/m : P21/c

41.04.02.02

Pseudomalachite

Cu5(PO4)2(OH)4

monoklin : 2/m : P21/c

41.04.03.01

Reichenbachite

Cu52+(PO4)2(OH)4

monoklin : 2/m : P21/a

41.04.03.02

Ludjibaite

Cu5(PO4)2(OH)4

triklin : 1 : P1

41.04.03.03

Turanite

Cu5(VO4)2(OH)4

triklin : 1 : P1

41.04.04.01

Stoiberite

Cu5V25+O10

monoklin : 2/m : P21/c

41.04.05.01

Averievite

Cu5[(Cl,Cs,K)|O|VO4]2

trigonal : 3 : P3

41.04.05.02

Tancoite

HNa2LiAl(PO4)2(OH)

orthorhombisch : mmm : Pbcb

41.04.07.01

Reppiaite

Mn2+5(VO4)2(OH)4

monoklin : 2/m : C2/m

41.04.08.01

Medenbachite

Bi2Fe3+(Cu,Fe2+)[(OH,O)2|AsO4]2

triklin : 1 : P1

41.04.09.01

Neustädtelite

Bi2Fe3+(Fe3+,Co)[(O,OH)|OH|AsO4]2

triklin : 1 : P1

41.04.09.02

Cobaltneustädtelite

Bi2Fe3+(Co,Fe3+)(AsO4)2(O,OH)4

triklin : 1 : P1

41.04.09.03

Other languages

German

Cornwallit

Spanish

Cornwallita

English

Cornwallite

French

Cornwallite

Russian

Корнваллит

Simplified Chinese

墨绿砷铜石

Traditional Chinese

翠綠砷銅礦

Simplified Chinese

翠绿砷铜矿

Japanese

コルンウォール石

Alternative Name

Erinite (of Haidinger)

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

German pages

DeWikiPedia - search for: Cornwallit
Google-Bilder-Suche - search for: Cornwallit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Cornwallit

English pages

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

Russian pages

Webmineral.ru - search for: Корнваллит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Cornwallit
Crystal-Treasure.com - search for: Cornwallit
Bosse - search for: Cornwallit

Locations with GPS information