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Widenmannite

Pictures (2 Images total)

Widenmannit
Views (File:
1458148696
): 1148
Widenmannit
Widenmannit (EDX und Raman) als gelbe, blättrige Kristalle auf Galenit von der Abrahamhalde, Lauta/Marienberg; in der Paragenese Devillin, Metazeunerit, Malachit; BB=1.1 mm.
Copyright: Hannes Osterhammer; Contribution: Lynx
Collection: Lynx, Collection number: 05.038
Location: Deutschland/Sachsen/Erzgebirgskreis/Marienberg, Revier/Marienberg/Lauta/Schacht 139 (Abrahamhalde)
Mineral: Widenmannite
Image: 1458148696
License: Usage for Mineralienatlas project only
Widenmannit (SNr: 05.038)  E
Analysed with energy dispersive X-ray spectroscopy EDX
R
Analysed with RAMAN spectroscopy

Widenmannit (EDX und Raman) als gelbe, blättrige Kristalle auf Galenit von der Abrahamhalde, Lauta/Marienberg; in der Paragenese Devillin, Metazeunerit, Malachit; BB=1.1 mm.
Collection: Lynx
Copyright: Hannes Osterhammer
Contribution: Lynx 2016-03-16
Locality: Schacht 139 (Abrahamhalde) / Lauta / Marienberg / Marienberg, Revier / Erzgebirgskreis / Sachsen / Deutschland
Widenmannit
Views (File:
1649188955
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Widenmannit
Deutschland/Sachsen/Erzgebirgskreis/Annaberg, Revier/Annaberg-Buchholz/Kleinrückerswalde/Grube Uranus; auf Cuprosklodowskit, BB ca. 3mm
Copyright: Uranophan2502; Contribution: Uranophan2502
Collection: Uranophan2502
Location: Deutschland/Sachsen/Erzgebirgskreis/Annaberg, Revier/Annaberg-Buchholz/Kleinrückerswalde/Grube Uranus
Mineral: Widenmannite
Image: 1649188955
License: Usage for Mineralienatlas project only
Widenmannit  E
Analysed with energy dispersive X-ray spectroscopy EDX

Deutschland/Sachsen/Erzgebirgskreis/Annaberg, Revier/Annaberg-Buchholz/Kleinrückerswalde/Grube Uranus; auf Cuprosklodowskit, BB ca. 3mm
Collection: Uranophan2502
Copyright: Uranophan2502
Contribution: Uranophan2502 2022-04-05
Locality: Grube Uranus / Kleinrückerswalde / Annaberg-Buchholz / Annaberg, Revier / Erzgebirgskreis / Sachsen / Deutschland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color hellgelb
Streak color weiß
Hardness (Mohs) 2
Solubility +++ verdünnte HNO3
Crystal System orthorhombisch, Pmmn

Chemism

Chemical formula

Pb2(OH)2[(UO2)(CO3)2]

Additional chem. information

Blei Uranyl-Karbonat

Chemical composition

Blei, Kohlenstoff, Sauerstoff, Uran, Wasserstoff

Unit weight: 838.480667 u; Number of atoms in the formula: 17

Info

Empirical formula:

Pb2(OH)2[(UO2)(CO3)2]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.24

2

11.76

1.0079470

2.0158940
Carbon

C

2.86

2

11.76

12.0107800

24.0215600
Oxygen

O

19.08

10

58.82

15.9994300

159.9943000
Lead

Pb

49.43

2

11.76

207.2100000

414.4200000
Uranium

U

28.39

1

5.88

238.0289130

238.0289130

Analysis wt%

PbO : 48.30, UO3 : 34.20, CO2 : 16.50 (Ref: Schweizerische Mineralogische und Petrographische

Mitteilungen 76)

Strunz 9th edition incl. updates

5.ED.40

5: Carbonate (Carbonate, Nitrate)
E: Uranylcarbonate
D: UO2:CO3 = 1:4
40:Widenmannit-Gruppe

Lapis Classification

V/F.07-010

V: NITRATE, CARBONATE UND BORATE
F: Uranylcarbonate [UO2] 2+ – [CO3] 2-

Classification by Hölzel

5.EA.300

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
E: Uranyl-Carbonates
A: Uranyl-Carbonates (-Anions -Water)

Dana 8th edition

14.01.05.01

14: Anhydrous Carbonates
01: Anhydrous Carbonates with Simple Formula A+ CO3

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

hellgelb

Streak color

weiß

max. Birefringence

0.142
Birefringence chart\! Widenmannite title=Birefringence chart Widenmannite

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

1.803

RI value β

1.905

RI value γ / ε

1.945

Ri mean

1.884

2V angle

Biaxial (-) 63°

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

59

Space Group

Pmmn

Cell parameters a (Å)

4.9744(9)

Cell parameters b (Å)

9.3816(16)

Cell parameters c (Å)

8.9539(15)

Cell parameters a/b or c/a

0.53

Cell parameters c/b

0.954

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volumne (ų)

417.859

X-Ray Powder Diffraction

4.16(80),
4.05(10),
3.970(10),
3.235(30),
2.989(10),
2.564(10),
2.409(10),
2.345(100)
XRD chart Widenmannite

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)

2

VHN (Hardness Vickers)

32 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

6.89

6.664 ( ρ calc. Mineralienatlas )

Instability

+++ verdünnte HNO3

(Co-)Type locality

(Co-)Type locality

Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Lahr/Reichenbach/Weiler/Grube Michael

Preface

Author (Name, Year)

Walenta & Wimmenauer, 1961

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: Ionizing radiation: Radioaktiv

References

Schweizerische Mineralogische und Petrographische Mitteilungen 56 (1976), 167

Jakub Plásil, Lukás Palatinus, Jan Rohlícek, Lenka Houdková, Mariana Klementová, Viktor Goliás, Pavel Skácha: Crystal structure of lead uranyl carbonate mineral widenmannite: Precession electron-diffraction and synchrotron powder-diffraction study. American Mineralogist Vol. 99 (2014) S. 276–282. [Neue Formel, Kristallstruktur]

Other languages

German

Widenmannit

Spanish

Widenmannita

English

Widenmannite

French

Widenmannite

CNMNC (IMA)-Number

IMA 1974-008

CNMNC symbol

Symbol

Wdm

Locations with GPS information

IDs

GUSID (Global unique identifier short form) pRuEkG-SDE-EsaVAuO6Jzw
GUID (Global unique identifier) 90841BA5-926F-4F0C-84B1-A540B8EE89CF
Database ID 4166