Mineralogy Database

Wolsendorfite Mineral Data

Search Webmineral :
  
Advertisment

General Wolsendorfite Information

Help on Chemical  Formula: Chemical Formula: (Pb,Ba,Ca)U2O7•2(H2O)
Help on Composition: Composition: Molecular Weight = 793.61 gm
   Barium     5.19 %  Ba    5.80 % BaO
   Calcium    0.51 %  Ca    0.71 % CaO
   Uranium   59.99 %  U    72.08 % UO3
   Hydrogen   0.51 %  H     4.54 % H2O
   Lead      15.67 %  Pb   16.87 % PbO
   Oxygen    18.14 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb0.6Ba0.3Ca0.1U2O7•2(H2O)
Help on Environment: Environment: In fissures in fluorite with other uranium minerals.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1957
Help on Locality: Locality: Wolsendorf, Bavaria, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Wolsendorfite + Pronunciation Say WOLSENDORFITE
Help on Synonym: Synonym: Woelsendorfite
 

Wolsendorfite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image

  Wolsendorfite

Comments: Red orange druse of tabular wolsendorfite crystals.
Location: Shinkolobwe mine, Tantara, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Wolsendorfite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8541:1:0.5017
Help on Cell Dimensions: Cell Dimensions: a = 11.95, b = 13.99, c = 7.02, Z = 6; V = 1,173.61 Den(Calc)= 6.74
Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.088(1), 3.4(0.7), 1.991(0.4),
 

Physical Properties of Wolsendorfite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Red, Carmine red.
Help on Density: Density: 6.8
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous - Adamantine
 

Optical Properties of Wolsendorfite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.194 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.204 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1588,KPDmeas= 0.1574,KC= 0.1318
Ncalc = 1.89 - 1.9
Help on Optical Data: Optical Data: Biaxial (?), a=2.05, g=2.09, bire=0.0400
 

Calculated Properties of Wolsendorfite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.62 gm/cc
note: Specific Gravity of Wolsendorfite =6.80 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEWolsendorfite =1,962.59 barns/electron
U=PEWolsendorfite x relectron=11031.54 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,226,520.03 (Gamma Ray American Petroleum Institute Units)
Concentration of Wolsendorfite per GRapi unit = 236.60 (PPB)

Wolsendorfite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 7.20 ± 1.80 grams of pure Wolsendorfite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 719.66 ±179.92 grams of pure Wolsendorfite .

Estimated Radioactivity from Wolsendorfite - very strong
Specimen
Size
Weight/Volume
(Sphere)
*
Calculated
Activity
Bequerols
(Bq)
Calculated
Activity
Curies (Ci)
Estimated
Activity
GR(api)
Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 6.55 cm 107,375,587 2.90E-03 4,226,520.03 1,389.54
100 gm / 3.04 cm 10,737,559 2.90E-04 422,652.00 138.95
10 gm / 1.41 cm 1,073,756 2.90E-05 42,265.20 13.90
1 gm / 6.55 mm 107,376 2.90E-06 4,226.52 1.39
0.1 gm / 3.04 mm 10,738 2.90E-07 422.65 0.14
0.01 gm / 1.41 mm 1,074 2.90E-08 42.27 0.01
0.001 gm / 0.65 mm 107 2.90E-09 4.23 0.00

Weight of pure Wolsendorfite in grams (gm) and Calculated Diameter of a Sphere with a Density of 6.80 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
 

Wolsendorfite Classification

Help on  Dana Class: Dana Class: 05.04.03.02 (05)Oxides Containing Uranium and Thorium
  (05.04)with alkaline-earth elements (hydrated)
  (05.04.03)Dana Group
 
05.04.03.01 Metacalciouranoite (Ca,Na,Ba)U2O7•2(H2O) Ortho ? Ortho
 
05.04.03.02 Wolsendorfite (Pb,Ba,Ca)U2O7•2(H2O) Unk Ortho
Help on  Strunz Class: Strunz Class: 04.GB.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.G - Uranyl Hydroxides
  04.GB -With additional cations (K, Ca, Ba, Pb, etc.); with mainly UO2(O,OH)5 pentagonal polyhedra
 
04.GB.30 Wolsendorfite (Pb,Ba,Ca)U2O7•2(H2O) Unk Ortho
 

Other Wolsendorfite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Wolsendorfite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Uranium Minerals

Search for Wolsendorfite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Wolsendorfite :

Ask about Wolsendorfite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Wolsendorfite Specimen Label here :

Wolsendorfite

(Pb,Ba,Ca)U2O7•2(H2O)
Dana No: 05.04.03.02 Strunz No: 04.GB.30
Locality:

 

Notes:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.