Orthowalpurgite Mineral Data (original) (raw)

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

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

Click Here for Larger Orthowalpurgite Image Orthowalpurgite Comments: Plastic container with fragments of the holotype specimen for orthowalpurgite. Location: Schmiedestollen, Black Forest, near Wittichen, Baden-Württemberg, 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 - DipyramidalH-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:

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| | Forms:( 0 1 0) ( 1 0 4) ( 1 0 0) ( 0 0 1) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Click Here for Large Orthowalpurgite Structure Window Crystal Structure:

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| | Krause W , Effenberger H , Brandstatter F , European Journal of Mineralogy , 7 (1995) p.1313-1324, Orthowalpurgite, (UO2)Bi4O4(AsO4)2.2H2O,, a new mineral from the Black Forest, Germany, Locality: Black Forest, Germany | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

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

SpecimenSizeWeight/Volume(Sphere) * CalculatedActivityBecquerels(Bq) CalculatedActivityCuries (Ci) EstimatedActivityGR(api) EstimatedExposure(mRem**)/hrIf Held in HandFor 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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Ask about Orthowalpurgite here :
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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: