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Metaschoepite Mineral Data

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General Metaschoepite Information

Help on Chemical  Formula: Chemical Formula: UO3•n(H2O)(n<2)
Help on Composition: Composition: Molecular Weight = 313.05 gm
   Uranium   76.04 %  U    91.37 % UO3
   Hydrogen   0.97 %  H     8.63 % H2O
   Oxygen    23.00 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: UO3•1.5(H2O)
Help on IMA Status: IMA Status: Approved IMA 1960
Help on Locality: Locality: Kasolo (Shinkolobwe), Katanga (Shaba), Congo (Za�re) Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the lower hydrate of schoepite.
Help on Name Pronunciation: Name Pronunciation: Metaschoepite Say METASCHOEPITE
Help on Synonym: Synonym: ICSD 280386
  PDF 43-364

Metaschoepite Image

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  Metaschoepite   Antlerite

Comments: Yellow crystals of metaschoepite with green antlerite.
Location: Pöhla-Tellerhäuser Gallery, Pöhla, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Metaschoepite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8367:1:0.8809
Help on Cell Dimensions: Cell Dimensions: a = 13.99, b = 16.72, c = 14.73, Z = 32; V = 3,445.54 Den(Calc)= 4.83
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbna

Physical Properties of Metaschoepite

Help on Cleavage: Cleavage: {001} Perfect, {010} Distinct
Help on Color: Color: Yellow, Golden yellow.
Help on Density: Density: 4.69
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Streak: Streak: light yellow

Optical Properties of Metaschoepite

Help on Optical Data: Optical Data: NCalc= 1.66 - from Gladstone-Dale relationship (KC = 0.1372) where Ncalc=Dcalc*KC+1
NCalc= 1.64 - from Gladstone-Dale relationship (KC = 0.1372) where Ncalc=Dmeas*KC+1

Calculated Properties of Metaschoepite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.04 gm/cc
note: Specific Gravity of Metaschoepite =4.83 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0055863927
Boson Index = 0.9944136073
Help on Photoelectric: Photoelectric: PEMetaschoepite =2,061.19 barns/electron
U=PEMetaschoepite x relectron=8,332.08 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 5,424,219.36 (Gamma Ray American Petroleum Institute Units)
Concentration of Metaschoepite per GRapi unit = 184.36 (PPB)

Metaschoepite 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) 5.61 ± 1.40 grams of pure Metaschoepite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 560.76 ±140.19 grams of pure Metaschoepite .

Estimated Radioactivity from Metaschoepite - very strong
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 7.34 cm 136,103,403 3.68E-03 5,424,219.36 1,783.30
100 gm / 3.41 cm 13,610,340 3.68E-04 542,421.94 178.33
10 gm / 1.58 cm 1,361,034 3.68E-05 54,242.19 17.83
1 gm / 7.34 mm 136,103 3.68E-06 5,424.22 1.78
0.1 gm / 3.41 mm 13,610 3.68E-07 542.42 0.18
0.01 gm / 1.58 mm 1,361 3.68E-08 54.24 0.02
0.001 gm / 0.73 mm 136 3.68E-09 5.42 0.00

Weight of pure Metaschoepite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.83 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

Metaschoepite Classification

Help on  Dana Class: Dana Class: (05)Oxides Containing Uranium and Thorium
  (05.02)with a cation charge of 6+ (AO3) and hydrated
  (05.02.01)Schoepite Group Metaschoepite UO3•n(H2O)(n<2) Pbna 2/m 2/m 2/m Paraschoepite UO3•2(H2O)(?) P bca 2/m 2/m 2/m 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 Metaschoepite Information

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Metaschoepite :
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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Dana No: Strunz No: 04.GA.05





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