Guilleminite Mineral Data

Guilleminite Mineral Data
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General Guilleminite Information

Help on Chemical Formula: Chemical Formula: Ba(UO2)3(SeO3)2O2•3(H2O)
Help on Composition: Composition: Molecular Weight = 1,287.37 gm
   Barium    10.67 %  Ba   11.91 % BaO
   Uranium   55.47 %  U    62.93 % UO2
   Hydrogen   0.47 %  H     4.20 % H2O
   Selenium  12.27 %  Se   17.24 % SeO2
   Oxygen    21.13 %  O
            ______        ______ 
            100.00 %       96.27 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba(UO2)3(SeO3)2O2•3(H2O)
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Musonoi, Katanga (Shaba), Congo (Zaīre) Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for French Claude Guillemin (1923-1994), founder of the National Geological Service of the BRGM.
Help on Name Pronunciation: Name Pronunciation: Guilleminite + Pronunciation Say GUILLEMINITE
Help on Synonym: Synonym: ICSD 81586
  PDF 18-582
 

Guilleminite Image

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Guilleminite

Comments: Radial, yellow aggregates of acicular crystals of guilleminite on green malachite.
Location: Musonoi mine, Kolwezi, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Guilleminite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.4305:1:0.4204
Help on Cell Dimensions: Cell Dimensions: a = 7.25, b = 16.84, c = 7.08, Z = 2; V = 864.40 Den(Calc)= 4.95
Help on Crystal System: Crystal System: Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P 21nm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.29(1), 8.39(1), 3.55(0.8),
Click Here for Large Guilleminite Structure Window Crystal Structure:

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Cooper M A , Hawthorne F C , The Canadian Mineralogist , 33 (1995) p.1103-1109, The crystal structure of guilleminite, a hydrated Ba-U-Se sheet structure

 

Physical Properties of Guilleminite

Help on Cleavage: Cleavage: {100} Perfect, {010} Good
Help on Color: Color: Greenish yellow, Yellow.
Help on Density: Density: 4.88
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
 

Optical Properties of Guilleminite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.259 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.241 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1564,KPDmeas= 0.1587,KC= 0.1261
Ncalc = 1.62
Help on Optical Data: Optical Data: Biaxial (-), a=1.72, b=1.798, g=1.805, bire=0.0850, 2V(Calc)=32, 2V(Meas)=35.
 

Calculated Properties of Guilleminite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.17 gm/cc
note: Specific Gravity of Guilleminite =4.95 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEGuilleminite =1,555.58 barns/electron
U=PEGuilleminite x relectron=6,483.68 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,981,130.59 (Gamma Ray American Petroleum Institute Units)
Concentration of Guilleminite per GRapi unit = 251.18 (PPB)

Guilleminite 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) 7.64 ± 1.91 grams of pure Guilleminite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 764.02 ±191.01 grams of pure Guilleminite .

Estimated Radioactivity from Guilleminite - 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 / 7.28 cm 99,288,787 2.68E-03 3,981,130.59 1,308.86
100 gm / 3.38 cm 9,928,879 2.68E-04 398,113.06 130.89
10 gm / 1.57 cm 992,888 2.68E-05 39,811.31 13.09
1 gm / 7.28 mm 99,289 2.68E-06 3,981.13 1.31
0.1 gm / 3.38 mm 9,929 2.68E-07 398.11 0.13
0.01 gm / 1.57 mm 993 2.68E-08 39.81 0.01
0.001 gm / 0.73 mm 99 2.68E-09 3.98 0.00

Weight of pure Guilleminite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.95 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
 

Guilleminite Classification
Help on Dana Class: Dana Class: 34.07.03.01 (34)Selenites - Tellurites - Sulfites
  (34.07)Dana Type
  (34.07.03)Dana Group
 
34.07.03.01 Guilleminite Ba(UO2)3(SeO3)2O2•3(H2O) P 21nm mm2
 
34.07.03.02 Piretite! Ca(UO2)3(SeO3)2(OH)4-4(H2O) P mn21,Pmnm Ortho
Help on Strunz Class: Strunz Class: 04.JJ.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.J - Arsenites, Antimonites, Bismuthites, Sulfites,
  04.JJ -Selenites with additional anions, with H2O
 
04.JJ.10 Guilleminite Ba(UO2)3(SeO3)2O2•3(H2O) P 21nm mm2
 

Other Guilleminite 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 Guilleminite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Uranium Minerals
16 - WWW-MINCRYST

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Guilleminite

Ba(UO2)3(SeO3)2O2•3(H2O)
Dana No: 34.07.03.01 Strunz No: 04.JJ.10
Locality:

 

Notes: