Mineralogy Database

Phosphowalpurgite Mineral Data

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General Phosphowalpurgite Information

Help on Chemical  Formula: Chemical Formula: (UO2)Bi4(PO4)O4•2(H2O)
Help on Composition: Composition: Molecular Weight = 1,391.69 gm
   Calcium      0.23 %  Ca    0.32 % CaO
   Uranium     15.56 %  U    17.66 % UO2
   Vanadium     0.07 %  V     0.13 % V2O5
   Iron         0.28 %  Fe    0.40 % Fe2O3
   Copper       0.23 %  Cu    0.29 % CuO
   Silicon      0.08 %  Si    0.17 % SiO2
   Bismuth     58.71 %  Bi   65.46 % Bi2O3
   Arsenic      2.69 %  As    4.13 % As2O5
   Phosphorus   3.34 %  P     7.65 % P2O5
   Hydrogen     0.29 %  H     2.59 % H2O
   Lead         0.15 %  Pb    0.16 % PbO
   Oxygen      18.36 %  O
              ______        ______ 
              100.00 %       98.95 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (UO2)0.91Ca0.08Fe3+0.07Cu0.05Pb0.01Bi3.91O3.91(PO4)1.5(AsO4)0.5(SiO4)0.04(VO4)0.02�2(H2O)
Help on Environment: Environment: Occurs as small clusters in fissure and cavities in quartz gangue from the mine dump. Mineral is formed by the supergene alteration of uraninite and bismuth sulfides.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Ore depost near Smrkovec,k in western Bohemia, Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the phosphate (PO4---) analogue of walpurgite.
Help on Synonym: Synonym: IMA2001-062
 

Phosphowalpurgite Image

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  Phosphowalpurgite

Comments: Scanning electron photomicrograph of tabular crystals (up to 330 microm) of phosphowalpurgite, (CanMin, 42:966)..
Location: Old mine dumps of an abandoned small ore deposit near Smrkovec, located 10 km NNE of Mariánské Lázn?, Slavkovský Les Mountains, western Bohemia, Czech Republic. Scale: Picture Size 515 µ-m.
© Canadian Mineralogist

Phosphowalpurgite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6895:1:0.5336
Help on Cell Dimensions: Cell Dimensions: a = 7.06, b = 10.238, c = 5.464, Z = 1; alpha = 101.22°, beta = 109.93°, gamma = 87.93° V = 363.95 Den(Calc)= 6.35
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.06(1)(010), 3.084(0.95)(121,211), 3.125(0.86)(210), 3.251(0.72)(021,121), 3.005(0.52)(131), 3.346(0.43)(030,201
 

Physical Properties of Phosphowalpurgite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Brownish gray.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: light brownish gray
 

Optical Properties of Phosphowalpurgite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.008 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1496,KC= 0.1507
Ncalc = 1.96
Help on Optical Data: Optical Data: Biaxial (?), a=1.9, g=2, bire=0.1000
 

Calculated Properties of Phosphowalpurgite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.35 gm/cc
note: Specific Gravity of Phosphowalpurgite =6.35 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0016409975
Boson Index = 0.9983590025
Help on Photoelectric: Photoelectric: PEPhosphowalpurgite =1,547.28 barns/electron
U=PEPhosphowalpurgite x relectron=8,270.30 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 1,116,707.99 (Gamma Ray American Petroleum Institute Units)
Concentration of Phosphowalpurgite per GRapi unit = 895.49 (PPB)

Phosphowalpurgite 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) 27.24 ± 6.81 grams of pure Phosphowalpurgite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 2723.8 ±680.94 grams of pure Phosphowalpurgite .

Estimated Radioactivity from Phosphowalpurgite - 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 / 6.70 cm 27,860,024 7.53E-04 1,116,707.99 367.14
100 gm / 3.11 cm 2,786,002 7.53E-05 111,670.80 36.71
10 gm / 1.44 cm 278,600 7.53E-06 11,167.08 3.67
1 gm / 6.70 mm 27,860 7.53E-07 1,116.71 0.37
0.1 gm / 3.11 mm 2,786 7.53E-08 111.67 0.04
0.01 gm / 1.44 mm 279 7.53E-09 11.17 0.00
0.001 gm / 0.67 mm 28 7.53E-10 1.12 0.00

Weight of pure Phosphowalpurgite in grams (gm) and Calculated Diameter of a Sphere with a Density of 6.35 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
 

Phosphowalpurgite Classification

Help on  Dana Class: Dana Class: 40.05.09.03 (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 Phosphowalpurgite Information

Help on References: References: NAME( CanMin 42:963) PHYS. PROP.(CanMin 42:963) OPTIC PROP.(CanMin 42:963)
Help on See Also: See Also: Links to other databases for Phosphowalpurgite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
11 - Uranium Minerals

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

Phosphowalpurgite

(UO2)Bi4(PO4)O4•2(H2O)
Dana No: 40.05.09.03 Strunz No: 08.EA.05
Locality:

 

Notes:

 

 
   
 


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