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Arsentsumebite

Pictures (25 Images total)

Arsentsumebit
Views (File:
1585331662
): 310
Arsentsumebit
FO: Grube Clara / Oberwolfach; BB: 2,5 mm
Copyright: Halden-Joerg; Contribution: Halden-Joerg
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Arsentsumebite
Encyclopedia: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Image: 1585331662
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Arsentsumebit

FO: Grube Clara / Oberwolfach; BB: 2,5 mm

Copyright: Halden-Joerg
Contribution: Halden-Joerg 2020-03-27
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Arsentsumebit
Views (File:
1221994859
): 4615
Arsentsumebit
Bildbreite: 1,5 mm; Fundort: Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine
Mineral: Arsentsumebite
Image: 1221994859
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Arsentsumebit

Bildbreite: 1,5 mm; Fundort: Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia

Copyright: Stephan Wolfsried
Contribution: Hg 2008-09-21
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia
Arsentsumebit xx auf Cerussit x
Views (File:
1406271105
): 1631
Arsentsumebit xx auf Cerussit x
Der Arsentsumebit umhüllt den Cerussit x vollständig; (Perimorphose); Grube Clara, Wolfach/Schwarzwald; Stacking-Aufnahme mit 3mm Bild-Breite
Copyright: Karlheinz Grosch; Contribution: Karlheinz Grosch
Collection: Karlheinz Grosch
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Arsentsumebite
Image: 1406271105
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Arsentsumebit xx auf Cerussit x

Der Arsentsumebit umhüllt den Cerussit x vollständig; (Perimorphose); Grube Clara, Wolfach/Schwarzwald; Stacking-Aufnahme mit 3mm Bild-Breite

Collection: Karlheinz Grosch
Copyright: Karlheinz Grosch
Contribution: Karlheinz Grosch 2014-07-25
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Arsentsumebit
Views (File:
1221994909
): 3339
Arsentsumebit
Bildbreite: 2 mm; Fundort: Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine
Mineral: Arsentsumebite
Image: 1221994909
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Arsentsumebit

Bildbreite: 2 mm; Fundort: Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia

Copyright: Stephan Wolfsried
Contribution: Hg 2008-09-21
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia
Arsentsumebit
Views (File:
1221994970
): 1944
Arsentsumebit
Bildbreite: 2 mm; Fundort: Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine
Mineral: Arsentsumebite
Image: 1221994970
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Arsentsumebit

Bildbreite: 2 mm; Fundort: Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia

Copyright: Stephan Wolfsried
Contribution: Hg 2008-09-21
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia
Arsentsumebit
Views (File:
1404643016
): 1065
Arsentsumebit
Bildbreite: 1,5 mm; Fundort: Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine
Mineral: Arsentsumebite
Image: 1404643016
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Arsentsumebit

Bildbreite: 1,5 mm; Fundort: Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia

Copyright: Stephan Wolfsried
Contribution: Hg 2014-07-06
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia

Collectors Summary

Color apfelgrün / gelbgrün / smaragdgrün
Streak color hellgrün
Lustre Glasglanz bis Diamantglanz
Hardness (Mohs) 3
Solubility +++ Säuren
Crystal System monoklin, P21/m
Morphology winzige, blättrig-rhomboedrische, z.T. gekrümmte Kristalle < 1 mm; kurzstengelige Kristalle

Chemism

Chemical formula

Pb2Cu(AsO4)(SO4)OH

Chemical composition

Arsen, Blei, Kupfer, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 729.956219 u; Number of atoms in the formula: 15

Info

Empirical formula:

Pb2Cu(AsO4)(SO4)OH

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.14

1

6.67

1.0079470

1.0079470

Oxygen

O

19.73

9

60.00

15.9994300

143.9948700

Sulfur

S

4.39

1

6.67

32.0655000

32.0655000

Copper

Cu

8.71

1

6.67

63.5463000

63.5463000

Arsenic

As

10.26

1

6.67

74.9216020

74.9216020

Lead

Pb

56.77

2

13.33

207.2100000

414.4200000

Analysis wt%

CuO : 10.90, PbO : 61.16, As2O5 : 15.74, SO3 : 10.97, H2O : 1.23 (Ref: berechnet)

Strunz 9th edition incl. updates

8.BG.05

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
G: Mit mittelgroßen und großen [Kationen] (OH, etc.):RO4 = 0.5:1
05:Brackebuschit-Gruppe

Lapis Classification

VII/B.24-060

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
24: Mittelgroße und große Kationen: Mg-Cu-Zn und Ca-Na-K-Ba-Pb; Brackebuschit- Gruppe

Classification by Hölzel

8.BL.710

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
L: Phosphates, very large: 2, Vmed: 2
7: With other complex Anions: Sulfate

Dana 8th edition

43.04.02.02

43: Compound Phosphates, etc.
04: Compound Phosphates, etc. (Anhydrous Compound Anions With Hydroxyl or Halogen)
02: Tsumebite Group

IMA status

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Brackebuschite supergroup  ⇒ Brackebuschite group

Optical Properties

Color

apfelgrün / gelbgrün / smaragdgrün

Streak color

hellgrün

Diaphaneity (Transparency)

transparent bis durchscheinend

Lustre

Glasglanz bis Diamantglanz

max. Birefringence

0.221

Birefringence chart\! Arsentsumebite title=Birefringence chart Arsentsumebite

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

1.790

RI value β

1.992

RI value γ / ε

2.011

Ri mean

1.931

2V angle

Biaxial (-) 88°

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

8.85

Cell parameters b (Å)

5.92

Cell parameters c (Å)

7.84

Cell parameters a/b or c/a

1.495

Cell parameters c/b

1.324

Cell parameters α

90°

Cell parameters β

112.60

Cell parameters γ

90°

Z

2

Volumne (ų)

379.212

X-Ray Powder Diffraction

4.87(80),
3.67(60),
3.26(100),
2.98(90),
2.77(90),
2.29(60),
1.877(60),
1.814(60)

XRD chart Arsentsumebite

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

Morphology

winzige, blättrig-rhomboedrische, z.T. gekrümmte Kristalle < 1 mm; kurzstengelige Kristalle

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

3

VHN (Hardness Vickers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

6.1

6.392 ( ρ calc. Mineralienatlas )

Radioactivity

nicht bekannt

Instability

+++ Säuren

Chemical Properties and Tests

chemisch und durch Röntgen

(Co-)Type locality

(Co-)Type locality

Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine

Preface

Occurrences

in der Oxidationszone von Blei-und Kupferlagerstätten

Associations

Azurit

Rareness

sehr selten

Author (Name, Year)

Vésignié, 1935

Relevance, Usage

Sammlermineral

References

Vésignié, J.P.L.: Presentation d echantillons. Bull. Soc. Franc. Mineral. Jhrg. 58 (1935) S. 4-5.
Handbook of Mineralogy (Anthony et al.), 4 (2000), 35.
Malcolm Southwood: Connoisseur’s Choice: Arsentsumebite, Tsumeb, Namibia. Rocks & Minerals Volume 97, Issue 3 (2022) S. 236-243.

IMA group assignments

Other languages

German

Arsentsumebit

Spanish

Arsentsumebita

French

Arsentsumebite

English

Arsentsumebite

Russian

Арсентсумебит

Russian

Арсенцумебит

Alternative Name

German

As-Tsumebit

As-Tsumebite

CNMNC symbol

Symbol

Atsu

Locations with GPS information