Mineralogy Database

Paraschoepite Mineral Data

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General Paraschoepite Information

Help on Chemical  Formula: Chemical Formula: UO3•2(H2O) (?)
Help on Composition: Composition: Molecular Weight = 322.06 gm
   Uranium   73.91 %  U    88.81 % UO3
   Hydrogen   1.25 %  H    11.19 % H2O
   Oxygen    24.84 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: UO3•2(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1947
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as a polymorph of schoepite.
Help on Name Pronunciation: Name Pronunciation: Paraschoepite Say PARASCHOEPITE
 

Paraschoepite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8389:1:0.9043
Help on Cell Dimensions: Cell Dimensions: a = 14.12, b = 16.83, c = 15.22, Z = 32; V = 3,616.87 Den(Calc)= 4.73
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P bca
 

Physical Properties of Paraschoepite

Help on Cleavage: Cleavage: {001} Perfect, {010} Distinct
Help on Color: Color: Yellow.
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Streak: Streak: light yellow
 

Optical Properties of Paraschoepite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.095 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1564,KC= 0.1428
Ncalc = 1.68
Help on Optical Data: Optical Data: Biaxial (?), a=1.7, b=1.75, g=1.77, bire=0.0700, 2V(Calc)=62, 2V(Meas)=40.
 

Calculated Properties of Paraschoepite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.99 gm/cc
note: Specific Gravity of Paraschoepite =4.73 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0054425391
Boson Index = 0.9945574609
Help on Photoelectric: Photoelectric: PEParaschoepite =1,985.43 barns/electron
U=PEParaschoepite x relectron=7,931.41 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 5,320,654.55 (Gamma Ray American Petroleum Institute Units)
Concentration of Paraschoepite per GRapi unit = 187.95 (PPB)

Paraschoepite 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) 5.72 ± 1.43 grams of pure Paraschoepite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 571.67 ±142.92 grams of pure Paraschoepite .

Estimated Radioactivity from Paraschoepite - 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 / 7.39 cm 132,296,723 3.58E-03 5,320,654.55 1,749.26
100 gm / 3.43 cm 13,229,672 3.58E-04 532,065.46 174.93
10 gm / 1.59 cm 1,322,967 3.58E-05 53,206.55 17.49
1 gm / 7.39 mm 132,297 3.58E-06 5,320.65 1.75
0.1 gm / 3.43 mm 13,230 3.58E-07 532.07 0.17
0.01 gm / 1.59 mm 1,323 3.58E-08 53.21 0.02
0.001 gm / 0.74 mm 132 3.58E-09 5.32 0.00

Weight of pure Paraschoepite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.73 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
 

Paraschoepite Classification

Help on  Dana Class: Dana Class: 05.02.01.02 (05)Oxides Containing Uranium and Thorium
  (05.02)with a cation charge of 6+ (AO3) and hydrated
  (05.02.01)Schoepite Group
 
05.02.01.01 Metaschoepite UO3•n(H2O)(n<2) Pbna 2/m 2/m 2/m
 
05.02.01.02 Paraschoepite UO3•2(H2O)(?) P bca 2/m 2/m 2/m
 
05.02.01.03 Schoepite (UO2)8O2(OH)12•12(H2O) P 21ca mm2
Help on  Strunz Class: Strunz Class: 04.GA.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.G - Uranyl Hydroxides
  04.GA -Without additional cations
 
04.GA.05 Metaschoepite UO3•n(H2O)(n<2) Pbna 2/m 2/m 2/m
 
04.GA.05 Paraschoepite UO3•2(H2O)(?) P bca 2/m 2/m 2/m
 
04.GA.05 Schoepite (UO2)8O2(OH)12•12(H2O) P 21ca mm2
 

Other Paraschoepite Information

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Paraschoepite :
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

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

Paraschoepite

UO3•2(H2O) (?)
Dana No: 05.02.01.02 Strunz No: 04.GA.05
Locality:

 

Notes: