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Widenmannite

A valid IMA mineral species
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About WidenmanniteHide

Formula:
Pb2(OH)2[(UO2)(CO3)2]
Originally assumed to be Pb2(UO2)(CO3)3.
Colour:
Yellow, very pale greenish yellow, colorless
Lustre:
Silky, Pearly
Hardness:
2
Specific Gravity:
6.89 (Calculated)
Crystal System:
Orthorhombic
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.


Unique IdentifiersHide

Mindat ID:
4285
Long-form identifier:
mindat:1:1:4285:3
GUID
(UUID V4):
505a332b-f957-4965-b3ae-4691528e2eb4

IMA Classification of WidenmanniteHide

Classification of WidenmanniteHide

5.ED.40

5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
D : UO2:CO3 = 1:3
14.1.5.1

14 : ANHYDROUS NORMAL CARBONATES
1 : A(XO3)
11.11.19

11 : Carbonates
11 : Carbonates of Cr and U

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
WdmIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of WidenmanniteHide

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

Optical Data of WidenmanniteHide

Type:
Biaxial (-)
RI values:
nα = 1.803(5) nβ = 1.905(5) nγ = 1.945(5)
2V:
Measured: 63° , Calculated: 60°
Max Birefringence:
δ = 0.142
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v extreme

Chemistry of WidenmanniteHide

Mindat Formula:
Pb2(OH)2[(UO2)(CO3)2]

Originally assumed to be Pb2(UO2)(CO3)3.

Crystallography of WidenmanniteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 8.99 Å, b = 9.36 Å, c = 4.95 Å
Ratio:
a:b:c = 0.96 : 1 : 0.529
Unit Cell V:
416.52 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Lath-like crystals in tufts and mats
Comment:
Point Group: 2/m 2/m 2/m, mm2, or 222; Space Group: P nmm, P nm21, or P22121.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0020039WidenmannitePlasil J, Palatinus L, Rohlicek J, Houdkovaq L, Klementova M, Golias V, Skacha P (2014) Crystal structure of lead uranyl carbonate mineral widenmannite: Precession electron-diffraction and synchrotron powder-diffraction study American Mineralogist 99 276-2822014Brezove Hory deposit, Pribram ore district, Czech Republic0293
0020040WidenmannitePlasil J, Palatinus L, Rohlicek J, Houdkovaq L, Klementova M, Golias V, Skacha P (2014) Crystal structure of lead uranyl carbonate mineral widenmannite: Precession electron-diffraction and synchrotron powder-diffraction study American Mineralogist 99 276-2822014Brezove Hory deposit, Pribram ore district, Czech Republic0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.16 Å(100)
2.34 Å(100)
3.19 Å(80b)
3.34 Å(70)
1.911 Å(50)
1.869 Å(50)
1.473 Å(50b)

Geological EnvironmentHide

Paragenetic Mode(s):

Type Occurrence of WidenmanniteHide

Place of Conservation of Type Material:
[University of Strassburg, Strassburg, France.]
Geological Setting of Type Material:
Oxidation zone hydrothermal As-Pb deposit
Associated Minerals at Type Locality:
Reference:
Walenta, K. (1976) Widenmannit und Joliotit, zwei neue Uranylkarbonatmineralien aus dem Schwarzwald. Schweizerische Mineralogische und Petrographische Mitteilungen: 56: 167-185.

Synonyms of WidenmanniteHide

Other Language Names for WidenmanniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Widenmannite associated with HügelitePb2(UO2)3(AsO4)2O2 · 5H2O
2 photos of Widenmannite associated with KasolitePb(UO2)(SiO4) · H2O
2 photos of Widenmannite associated with CerussitePbCO3
1 photo of Widenmannite associated with QuartzSiO2
1 photo of Widenmannite associated with SklodowskiteMg(UO2)2(SiO3OH)2 · 6H2O
1 photo of Widenmannite associated with ErythriteCo3(AsO4)2 · 8H2O

Related Minerals - Strunz-mindat GroupingHide

5.ED.ParamarkeyiteCa2(UO2)(CO3)3 · 5H2OMon. 2/m
5.ED.Pendevilleite-(Y)Mg2Y3Al(UO2)2(CO3)7(OH)6(H2O)16Tric. 1 : P1
5.ED.05BayleyiteMg2(UO2)(CO3)3 · 18H2OMon. 2/m : P21/b
5.ED.10SwartziteMgCa(UO2)(CO3)3 · 12H2OMon. 2/m : P21/m
5.ED.15AlbrechtschraufiteCa4Mg(UO2)2(CO3)6F2 · 17-18H2OTric. 1 : P1
5.ED.20LiebigiteCa2(UO2)(CO3)3 · 11H2OOrth. mm2
5.ED.25RabbittiteCa3Mg3(UO2)2(CO3)6(OH)4 · 18H2OMon.
5.ED.30AndersoniteNa2Ca(UO2)(CO3)3 · 6H2OTrig. 3 : R3
5.ED.35GrimseliteK3Na(UO2)(CO3)3 · H2OHex. 6 m2 : P62c
5.ED.45Znucalite Zn10Ca0.83(UO2)0.83(CO3)4(OH)15.31(H2O)5.48Mon. 2/m : P21/m
5.ED.50ČejkaiteNa4(UO2)(CO3)3Mon. m : Bb
5.ED.50AgricolaiteK4(UO2)(CO3)3Mon. 2/m : B2/b
5.ED.55LínekiteK2Ca3[(UO2)(CO3)3]2 · 8H2OOrth. mmm (2/m 2/m 2/m) : Pnnm
5.ED.55BrauneriteK2Ca(UO2)(CO3)3 · 6H2OMon. 2/m : P21/b
5.ED.60LeószilárditeNa6Mg(UO2)2(CO3)6 · 6H2OMon. 2/m : B2/m
5.ED.65PseudomarkeyiteCa8(UO2)4(CO3)12 · 21H2OMon. 2/m : P21/m
5.ED.65MarkeyiteCa9(UO2)4(CO3)13 · 28H2OOrth. mmm (2/m 2/m 2/m) : Pmmn
5.ED.65NatromarkeyiteNa2Ca8(UO2)4(CO3)13 · 27H2OOrth. mmm (2/m 2/m 2/m) : Pmmn
5.ED.70PaddlewheeliteMgCa5Cu2(UO2)4(CO3)12(H2O)33Mon. m : Pb

Fluorescence of WidenmanniteHide

Non-fluorescent.

Other InformationHide

Health Risks:
Radioactive

Internet Links for WidenmanniteHide

References for WidenmanniteHide

Reference List:

Localities for WidenmanniteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Czech Republic
 
  • Central Bohemian Region
    • Příbram District
      • Příbram
        • Březové Hory
          • Březové Hory deposit
Plášil et al. (2010)
Bull.N.M.Praha 2002 +1 other reference
  • Karlovy Vary Region
    • Karlovy Vary District
Lapis 2002 (7/8)
Möhn et al. (12/2021)
Finland
 
  • Lapland
    • Salla
Halls (2005)
Germany (TL)
 
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Seelbach
          • Seelbach
            • Weiler
Fleischer (1962) +3 other references
  • Saxony
    • Erzgebirgskreis
      • Annaberg-Buchholz
        • Kleinrückerswalde
Stolze et al. (09/2020)
Switzerland
 
  • Valais
    • Saint-Maurice
      • Collonges
        • Plex
Meisser (2012)
UK
 
  • England
    • Cornwall
      • St Just
        • Botallack
Elton et al. (1995) +1 other reference
  • Scotland
    • Dumfries and Galloway
      • Needle's Eye
Day (1999)
USA
 
  • Michigan
    • Baraga County
      • Huron River
Carlson et al. (2007)
Anné (2007)
 
矿物 and/or 产地  
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