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Metavanmeersscheite Mineral Data

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General Metavanmeersscheite Information

Help on Chemical  Formula: Chemical Formula: U++++++(UO2)3(PO4)2(OH)6•2(H2O)
Help on Composition: Composition: Molecular Weight = 1,376.13 gm
   Uranium     69.19 %  U    58.87 % UO2 / 20.78 % UO3
   Phosphorus   4.50 %  P    10.31 % P2O5
   Hydrogen     0.73 %  H     6.55 % H2O
   Oxygen      25.58 %  O
              ______        ______ 
              100.00 %       96.51 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: U(UO2)3(PO4)2(OH)6•2(H2O)
Help on Environment: Environment: Rare secondary mineral in the uraniferous zone of an altered granite pegmatite, formed by dehydration of vanmeersscheite.
Help on IMA Status: IMA Status: Approved IMA 1982
Help on Locality: Locality: Kobokobo pegmatite, Lusungu River district, Kivu Province, Congo (Zaire). Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named by adding the prefix meta which indicates the dehydration product of vanmeersscheite.
Help on Name Pronunciation: Name Pronunciation: Metavanmeersscheite + Pronunciation Say METAVANMEERSSCHEITE
 

Metavanmeersscheite Image

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  Vanmeersscheite   Metavanmeersscheite

Comments: Yellow coatings of vanmeersscheite on sandstone. Unless sealed in glass, all specimens should be considered to have become metavanmeersscheite.
Location: Cameron, Coconino Co., Arizona, USA. Scale: Sample Size 4 cm Glass Vial.
© Diederik Visser

Metavanmeersscheite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0088:1:0.4154
Help on Cell Dimensions: Cell Dimensions: a = 34.18, b = 33.88, c = 14.074, Z = 32; V = 16,297.95 Den(Calc)= 4.49
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: F dd2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.49(1), 6.01(0.9), 3.073(0.7),
Help on Forms: Forms:

Mouse
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RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

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I - Indicies
<space> - Start-Stop Rotation
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Help on Above

Forms: ( 0 1 0) ( 1 0 1) ( 1 0 0) ( 0 0 1)

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Physical Properties of Metavanmeersscheite

Help on Cleavage: Cleavage: {010} Good, {100} Distinct
Help on Color: Color: Canary yellow.
Help on Density: Density: 4.49
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luminescence: Luminescence: Fluorescent, Short UV=green, Long UV=green.
Help on Streak: Streak: light yellow
 

Optical Properties of Metavanmeersscheite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.216 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.216 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1514,KPDmeas= 0.1514,KC= 0.1245
Ncalc = 1.56
Help on Optical Data: Optical Data: Biaxial (-), a=1.67, b=1.68, g=1.69, bire=0.0200, 2V(Calc)=88, 2V(Meas)=83.
 

Calculated Properties of Metavanmeersscheite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.81 gm/cc
note: Specific Gravity of Metavanmeersscheite =4.49 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0051054053
Boson Index = 0.9948945947
Help on Photoelectric: Photoelectric: PEMetavanmeersscheite =1,849.67 barns/electron
U=PEMetavanmeersscheite x relectron=7,048.95 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 5,005,503.44 (Gamma Ray American Petroleum Institute Units)
Concentration of Metavanmeersscheite per GRapi unit = 199.78 (PPB)

Metavanmeersscheite 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) 6.08 ± 1.52 grams of pure Metavanmeersscheite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 607.66 ±151.92 grams of pure Metavanmeersscheite .

Estimated Radioactivity from Metavanmeersscheite - 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 / 7.52 cm 123,846,422 3.35E-03 5,005,503.44 1,645.64
100 gm / 3.49 cm 12,384,642 3.35E-04 500,550.34 164.56
10 gm / 1.62 cm 1,238,464 3.35E-05 50,055.03 16.46
1 gm / 7.52 mm 123,846 3.35E-06 5,005.50 1.65
0.1 gm / 3.49 mm 12,385 3.35E-07 500.55 0.16
0.01 gm / 1.62 mm 1,238 3.35E-08 50.06 0.02
0.001 gm / 0.75 mm 124 3.35E-09 5.01 0.00

Weight of pure Metavanmeersscheite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.49 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
 

Metavanmeersscheite Classification

Help on  Dana Class: Dana Class: 42.07.14.02 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.07)where (AB)5 (XO4)3 Zq � x(H2O)
  (42.07.14)Vanmeersscheite Group
 
42.07.14.01 Vanmeersscheite U(UO2)3(PO4)2(OH)6•4(H2O) P mn21 mm2
 
42.07.14.02 Metavanmeersscheite U(UO2)3(PO4)2(OH)6•2(H2O) F dd2 mm2
 
42.07.14.03 Arsenovanmeersscheite U(OH)4[(UO2)3(AsO4)2(OH)2]•4H2O P 21mn 2 2 2
Help on  Strunz Class: Strunz Class: 08.EC.20 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EC -UO2:RO4 = 3:2
 
08.EC.20 Metavanmeersscheite U(UO2)3(PO4)2(OH)6•2(H2O) F dd2 mm2
 
08.EC.20 Vanmeersscheite U(UO2)3(PO4)2(OH)6•4(H2O) P mn21 mm2
 
08.EC.20 Arsenovanmeersscheite U(OH)4[(UO2)3(AsO4)2(OH)2]•4H2O P 21mn 2 2 2
 

Other Metavanmeersscheite Information

Help on References: References: NAME( AntBidBlaNic4) 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 Metavanmeersscheite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Ecole des Mines de Paris
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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

Metavanmeersscheite

U++++++(UO2)3(PO4)2(OH)6•2(H2O)
Dana No: 42.07.14.02 Strunz No: 08.EC.20
Locality:

 

Notes:

 

 
   
 


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