Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Widenmannite

This page is currently not sponsored. Click here to sponsor this page.
Big Photo

Prokop Mine, Březové Hory deposit, Březové Hory (Birkenberg), Příbram, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic
© www.czechmin.cz

Show Widenmannite Photos (2)



Formula:
Pb
 
2
(UO
 
2
)(CO
 
3
)
 
3
System:OrthorhombicColour:Yellow, very pale ...
Hardness:2
Name:Named after Johann Friedrich Wilhelm Widenmann (1764-1798), German mining official ('Württembergischer Bergrat') who, in 1793, first reported on the occurrence of an uranium mica in the Black Forest.
This page provides mineralogical data about Widenmannite.

Classification of Widenmannite

IMA status:Approved 1974
Strunz 8th edition ID:5/F.07-10
Nickel-Strunz 10th (pending) edition ID:5.ED.40

5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
D : UO2:CO3 = 1:3
Dana 8th edition ID:14.1.5.1

14 : ANHYDROUS NORMAL CARBONATES
1 : A(XO3)
Hey's CIM Ref.:11.11.19

11 : Carbonates
11 : Carbonates of Cr and U
mindat.org URL:http://www.mindat.org/min-4285.html
Please feel free to link to this page.

Type Occurrence of Widenmannite

Type Locality:Michael Mine, Weiler, Reichenbach, Lahr, Black Forest, Baden-Württemberg, Germany
Year of Discovery:1961
Geological Setting of type material:Oxidation zone hydrothermal As-Pb deposit

Physical Properties of Widenmannite

Lustre:Silky, Pearly
Diaphaneity (Transparency):Transparent, Translucent
Colour:Yellow, very pale greenish yellow, colorless
Streak:Pale yellow
Hardness (Mohs):2
Cleavage:Perfect
on {010}
Density (calculated):6.89 g/cm3

Crystallography of Widenmannite

Crystal System:Orthorhombic
Cell Parameters:a = 8.99Å, b = 9.36Å, c = 4.95Å
Ratio:a:b:c = 0.96 : 1 : 0.529
Unit Cell Volume:V 416.52 ų (Calculated from Unit Cell)
Morphology:Lath-like crystals in tufts and mats

Optical Data of Widenmannite

Type:Biaxial (-)
RI values: nα = 1.803 nβ = 1.905 nγ = 1.945
2V:Measured: 63° , Calculated: 60°
Maximum Birefringence:δ = 0.142

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r > v extreme

Chemical Properties of Widenmannite

Formula:
Pb
 
2
(UO
 
2
)(CO
 
3
)
 
3
Essential elements:C, O, Pb, U
All elements listed in formula:C, O, Pb, U

Relationship of Widenmannite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.ED.05Bayleyite
Mg
 
2
(UO
 
2
)(CO
 
3
)
 
3
 · 18H
 
2
O
5.ED.10Swartzite
MgCa(UO
 
2
)(CO
 
3
)
 
3
 · 12H
 
2
O
5.ED.15Albrechtschraufite
Ca
 
4
Mg(UO
 
2
)
 
2
(CO
 
3
)
 
6
F
 
2
 · 17 H
 
2
O
5.ED.20Liebigite
Ca
 
2
(UO
 
2
)(CO
 
3
)
 
3
 · 11H
 
2
O
5.ED.25Rabbittite
Ca
 
3
Mg
 
3
(UO
 
2
)
 
2
(CO
 
3
)
 
6
(OH)
 
4
 · 18H
 
2
O
5.ED.30Andersonite
Na
 
2
Ca(UO
 
2
)(CO
 
3
)
 
3
 · 6H
 
2
O
5.ED.35Grimselite
K
 
3
Na(UO
 
2
)(CO
 
3
)
 
3
 · H
 
2
O
5.ED.45Znucalite
Zn
 
12
Ca(UO
 
2
)(CO
 
3
)
 
3
(OH)
 
22
 · 4H
 
2
O
5.ED.50Čejkaite
Na
 
4
(UO
 
2
)(CO
 
3
)
 
3
5.ED.50IMA2009-081
K
 
4
(UO
 
2
)(CO
 
3
)
 
3
Related Minerals - Hey's Index Grouping:

- +
11.11.1Stichtite
Mg
 
6
Cr
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
11.11.2Rutherfordine
(UO
 
2
)CO
 
3
11.11.3Joliotite
(UO
 
2
)CO
 
3
 · nH
 
2
O
11.11.4Grimselite
K
 
3
Na(UO
 
2
)(CO
 
3
)
 
3
 · H
 
2
O
11.11.5Bayleyite
Mg
 
2
(UO
 
2
)(CO
 
3
)
 
3
 · 18H
 
2
O
11.11.6Metazellerite
Ca(UO
 
2
)(CO
 
3
)
 
2
 · 3H
 
2
O
11.11.7Zellerite
Ca(UO
 
2
)(CO
 
3
)
 
2
 · 5H
 
2
O
11.11.8Wyartite
CaU
5+
 
(UO
 
2
)
 
2
(CO
 
3
)O
 
4
(OH) · 7H
 
2
O
11.11.9Urancalcarite
Ca(UO
 
2
)
 
3
(CO
 
3
)(OH)
 
6
 · 3H
 
2
O
11.11.10Sharpite
Ca(UO
 
2
)
 
6
(CO
 
3
)
 
5
(OH)
 
4
 · 6H
 
2
O
11.11.11Voglite
Ca
 
2
Cu(UO
 
2
)(CO
 
3
)
 
4
 · 6H
 
2
O
11.11.12Andersonite
Na
 
2
Ca(UO
 
2
)(CO
 
3
)
 
3
 · 6H
 
2
O
11.11.13Swartzite
MgCa(UO
 
2
)(CO
 
3
)
 
3
 · 12H
 
2
O
11.11.14Rabbittite
Ca
 
3
Mg
 
3
(UO
 
2
)
 
2
(CO
 
3
)
 
6
(OH)
 
4
 · 18H
 
2
O
11.11.15Kamotoite-(Y)
Y
 
2
(UO
 
2
)
 
4
(CO
 
3
)
 
3
O
 
4
 · 14H
 
2
O
11.11.16Shabaite-(Nd)
Ca(Nd,Sm,Y)
 
2
(UO
 
2
)(CO
 
3
)
 
4
(OH)
 
2
 · 6H
 
2
O
11.11.17Astrocyanite-(Ce)
Cu
 
2
(Ce,Nd,La)
 
2
(UO
 
2
)(CO
 
3
)
 
5
(OH)
 
2
 · 1.5H
 
2
O
11.11.18Bijvoetite-(Y)
(Y,Dy)
 
2
(UO
 
2
)
 
4
(CO
 
3
)
 
4
(OH)
 
6
 · 11H
 
2
O
11.11.20Znucalite
Zn
 
12
Ca(UO
 
2
)(CO
 
3
)
 
3
(OH)
 
22
 · 4H
 
2
O

Other Names for Widenmannite

Synonyms:
IMA1974-008
Other Languages:
German:Widenmannit
Spanish:Widenmannita

Other Information

Fluorescence in UV light:Non-fluorescent.
Health Warning:Radioactive

References for Widenmannite

Reference List:

- +
American Mineralogist (1962): 47: 415.

Walenta, K. (1976): Widenmannit und Joliotit, zwei neue Uranylkarbonatmineralien aus dem Schwarzwald. Schweiz. Mineral. Petrog. Mitt., 56, 167-185 (in German with English abs.).

Mineralogical Magazine (1995): 59: 745-749.


Internet Links for Widenmannite

Search Engines:
  • Look for Widenmannite on Google
  • Look for Widenmannite images on Google
    • External Links:
  • Look for Widenmannite on Webmineral
  • Look for Widenmannite on Athena Mineralogy
  • Look for Widenmannite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Widenmannite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Edwards Minerals - Fine Specimens
  • Top quality minerals from Kristalle of California
  • Pricedownminerals.com - Reverse Auctions and Shop
  • Buy fine minerals and gemstones from Pala International
  • SpiriferMinerals.com - high quality low prices
  • Search for - Widenmannite - on e-Rocks Mineral Sales & Auctions
  • Search for Widenmannite from all mineral dealers at minfind.com
  • Fine Minerals from Weinrich Minerals, Inc.
  • The Arkenstone - Fine Minerals
  • Buy RARE Minerals from Rocks of Africa
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Widenmannite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Příbram
          • Březové Hory (Birkenberg)
            • Březové Hory deposit
    		Bull.N.M.Praha 2002, 10, pp. 43-77; Vajdak, Josef (2006) Mineral News: 22: 4.
      • Karlovy Vary Region
        • Krušné Hory Mts (Erzgebirge)
          • Jáchymov (St Joachimsthal) District
    		Lapis 2002(7/8), 63-65
    Finland
     
    • Lapin (Lapland) Lääni
      • Salla
    		Halls, Ch. (2005): Report on the mineralogy of a sample from the Agricola Resources Energy Ridge project, Hautuajaervi, Lapin Laani, Finland. Final Reprot, Dept. of Mineralogy, NHM, London, 1-24. [cited in Plásil et al. (2010)]
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Lahr
          • Reichenbach
            • Weiler
    		Am. Min., 47, 415 (1962); Schw. MPM 56 (1976), 167; Walenta: "Die Mineralien des Schwarzwaldes", Weise (1992)
    UK
     
    • England
      • Cornwall
        • St Just District
          • St Just
            • Botallack
    		[Journal of the Russell Society, 6(1), 17-26 (1995)]
    • Scotland
      • Dumfries & Galloway (Kirkcudbrightshire)
        • Needle's Eye
    		BMS Database
    USA
     
    • Michigan
      • Baraga Co.
        • Huron River
    		Rocks & Minerals 82:298-308
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 18th Jun 2011 22:41:12
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds