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Orthowalpurgite Mineral Data

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General Orthowalpurgite Information

Help on Chemical  Formula: Chemical Formula: (UO2)Bi4O4(AsO4)2•2(H2O)
Help on Composition: Composition: Molecular Weight = 1,483.82 gm
   Uranium   16.04 %  U    18.20 % UO2
   Bismuth   56.34 %  Bi   62.81 % Bi2O3
   Arsenic   10.10 %  As   15.49 % As2O5
   Hydrogen   0.27 %  H     2.43 % H2O
   Oxygen    17.25 %  O
            ______        ______ 
            100.00 %       98.92 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (UO2)Bi4O4(AsO4)2•2(H2O)
Help on Environment: Environment: May have formed by weathering of emplectite, wittichenite or other Bi-bearing ore minerals. Dimorphous with walpugite.
Help on IMA Status: IMA Status: Approved IMA 1995
Help on Locality: Locality: The Schmiedestollen, Wittichen, Black Forest, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: It is an orthorhombic polymorph of walpurgite.
Help on Name Pronunciation: Name Pronunciation: Orthowalpurgite + Pronunciation Say ORTHOWALPURGITE
Help on Synonym: Synonym: ICSD 80915
  IMA1994-024
  PDF 48-1889
 

Orthowalpurgite Image

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  Orthowalpurgite

Comments: Plastic container with fragments of the holotype specimen for orthowalpurgite.
Location: Schmiedestollen, Black Forest, near Wittichen, Baden-W├╝rttemberg, Germany. Scale: Not Given.
© German Type Specimen Catalogue

Orthowalpurgite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4121:1:1.5524
Help on Cell Dimensions: Cell Dimensions: a = 5.492, b = 13.324, c = 20.685, Z = 4; V = 1,513.63 Den(Calc)= 6.51
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbcm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.208(1), 10.354(0.94), 3.088(0.76),
Help on Forms: Forms:

Mouse
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RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

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I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 1 0) ( 1 0 4) ( 1 0 0) ( 0 0 1)

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Physical Properties of Orthowalpurgite

Help on Cleavage: Cleavage: {001} Indistinct
Help on Color: Color: Pale yellow.
Help on Density: Density: 6.5
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Adamantine
Help on Streak: Streak: pale yellow
 

Optical Properties of Orthowalpurgite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.028 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.027 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1516,KPDmeas= 0.1518,KC= 0.1476
Ncalc = 1.96
Help on Optical Data: Optical Data: Biaxial (-), a=1.91, b=2, g=2.05, bire=0.1400, 2V(Calc)=70, 2V(Meas)=70.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Orthowalpurgite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.46 gm/cc
note: Specific Gravity of Orthowalpurgite =6.51 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0012387819
Boson Index = 0.9987612181
Help on Photoelectric: Photoelectric: PEOrthowalpurgite =1,523.30 barns/electron
U=PEOrthowalpurgite x relectron=8,313.94 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 1,146,367.29 (Gamma Ray American Petroleum Institute Units)
Concentration of Orthowalpurgite per GRapi unit = 872.32 (PPB)

Orthowalpurgite 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) 26.53 ± 6.63 grams of pure Orthowalpurgite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 2653.3 ±663.33 grams of pure Orthowalpurgite .

Estimated Radioactivity from Orthowalpurgite - 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 / 6.64 cm 28,714,596 7.76E-04 1,146,367.29 376.89
100 gm / 3.08 cm 2,871,460 7.76E-05 114,636.73 37.69
10 gm / 1.43 cm 287,146 7.76E-06 11,463.67 3.77
1 gm / 6.64 mm 28,715 7.76E-07 1,146.37 0.38
0.1 gm / 3.08 mm 2,871 7.76E-08 114.64 0.04
0.01 gm / 1.43 mm 287 7.76E-09 11.46 0.00
0.001 gm / 0.66 mm 29 7.76E-10 1.15 0.00

Weight of pure Orthowalpurgite in grams (gm) and Calculated Diameter of a Sphere with a Density of 6.51 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
 

Orthowalpurgite Classification

Help on  Dana Class: Dana Class: 40.05.09.02 (40)Hydrated Phosphates, etc
  (40.05)with miscellaneous formulae
  (40.05.09)Walpurgite Group
 
40.05.09.01 Walpurgite Bi4(UO2)(AsO4)2O4•2(H2O) P1 1
 
40.05.09.02 Orthowalpurgite (UO2)Bi4O4(AsO4)2•2(H2O) Pbcm 2/m 2/m 2/m
 
40.05.09.03 Phosphowalpurgite! (UO2)Bi4(PO4)O4•2(H2O) P1 1
Help on  Strunz Class: Strunz Class: 08.EA.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EA -UO2:RO4 = 1:2
 
08.EA.05 Orthowalpurgite (UO2)Bi4O4(AsO4)2•2(H2O) Pbcm 2/m 2/m 2/m
 
08.EA.05 Walpurgite Bi4(UO2)(AsO4)2O4•2(H2O) P1 1
 
08.EA.05 Phosphowalpurgite! (UO2)Bi4(PO4)O4•2(H2O) P1 1
 

Other Orthowalpurgite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,p1014,1996) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Orthowalpurgite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Orthowalpurgite

(UO2)Bi4O4(AsO4)2•2(H2O)
Dana No: 40.05.09.02 Strunz No: 08.EA.05
Locality:

 

Notes:

 

 
   
 


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