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Metanovacekite Mineral Data

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General Metanovacekite Information

Help on Chemical  Formula: Chemical Formula: Mg(UO2)2(AsO4)2•4-8(H2O)
Help on Composition: Composition: Molecular Weight = 950.29 gm
   Magnesium   2.56 %  Mg    4.24 % MgO
   Uranium    50.10 %  U    56.83 % UO2
   Arsenic    15.77 %  As   24.19 % As2O5
   Hydrogen    1.27 %  H    11.37 % H2O
   Oxygen     30.31 %  O
             ______        ______ 
             100.00 %       96.63 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg(UO2)2(AsO4)2•6(H2O)
Help on Environment: Environment: Dehydration product of novacekite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1958
Help on Locality: Locality: Anton mine, Heubachtal, near Schiltach, Black Forest, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The prefix meta indicates the dehydration product of novacekite.
Help on Name Pronunciation: Name Pronunciation: Metanovacekite + Pronunciation Say METANOVACEKITE

Metanovacekite Image

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  Novacekite   Metanovacekite

Comments: Yellow, translucent platy novacekite/metanovacekite crystal aggregate.
Location: Rabejac Mine, Olmet, Herault, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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Comments: Bright yellow crystalline metanovacekite coatings on white crystalline gypsum.
Location: Las Animas Mine, Municipio do Heuiles Serdan, Chihuahua, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Metanovacekite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.19832
Help on Cell Dimensions: Cell Dimensions: a = 7.16, c = 8.58, Z = 1; V = 439.86 Den(Calc)= 3.59
Help on Crystal System: Crystal System: Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: P 4/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.52(1), 3.57(0.9), 2.14(0.6),

Physical Properties of Metanovacekite

Help on Cleavage: Cleavage: {001} Perfect, {010} Indistinct, {110} Indistinct
Help on Color: Color: Yellow, Light yellow.
Help on Density: Density: 3.51
Help on Diaphaneity: Diaphaneity: Subopaque
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Fluorescent, Short UV=dull green, Long UV=dull green.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: yellow white

Optical Properties of Metanovacekite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.221 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.194 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1709,KPDmeas= 0.1748,KC= 0.1432
Ncalc = 1.5 - 1.51
Help on Optical Data: Optical Data: Uniaxial (-), e=1.595, w=1.632, bire=0.0370.

Calculated Properties of Metanovacekite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.16 gm/cc
note: Specific Gravity of Metanovacekite =3.59 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0063119282
Boson Index = 0.9936880718
Help on Photoelectric: Photoelectric: PEMetanovacekite =1,303.64 barns/electron
U=PEMetanovacekite x relectron=4,117.19 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,756,530.70 (Gamma Ray American Petroleum Institute Units)
Concentration of Metanovacekite per GRapi unit = 266.20 (PPB)

Metanovacekite 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) 8.10 ± 2.02 grams of pure Metanovacekite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 809.70 ±202.43 grams of pure Metanovacekite .

Estimated Radioactivity from Metanovacekite - very strong
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 8.10 cm 89,671,893 2.42E-03 3,756,530.70 1,235.02
100 gm / 3.76 cm 8,967,189 2.42E-04 375,653.07 123.50
10 gm / 1.75 cm 896,719 2.42E-05 37,565.31 12.35
1 gm / 8.10 mm 89,672 2.42E-06 3,756.53 1.24
0.1 gm / 3.76 mm 8,967 2.42E-07 375.65 0.12
0.01 gm / 1.75 mm 897 2.42E-08 37.57 0.01
0.001 gm / 0.81 mm 90 2.42E-09 3.76 0.00

Weight of pure Metanovacekite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.59 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

Metanovacekite Classification

Help on  Dana Class: Dana Class: 40.02a.10.02 (40)Hydrated Phosphates, etc
  (40.02a)where A++ (B++)2 (XO4) � x(H2O), containing (UO2)++
  (40.02a.10)Dana Group
40.02a.10.01 Novacekite Mg(UO2)2(AsO4)2•12(H2O) P 41/n 4/m
40.02a.10.02 Metanovacekite Mg(UO2)2(AsO4)2•4-8(H2O) P 4/n 4/m
Help on  Strunz Class: Strunz Class: 08.EB.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EB -UO2:RO4 = 1:1
08.EB.10 Bassetite Fe(UO2)2(PO4)2•8(H2O) P 21/m 2/m
08.EB.10 Lehnerite Mn[UO2/PO4]2•8(H2O) P 21/n 2/m
08.EB.10 Metazeunerite Cu(UO2)2(AsO4)2•8(H2O) P 4/n 4/m
08.EB.10 Meta-autunite Ca(UO2)2(PO4)2•2-6(H2O) P 4/nmm 4/m 2/m 2/m
08.EB.10 Metauranocircite Ba(UO2)2(PO4)2•6-8(H2O) P 21 2
08.EB.10 Metauranospinite Ca(UO2)2(AsO4)2•8(H2O) P 4/nmm 4/m 2/m 2/m
08.EB.10 Metaheinrichite Ba(UO2)2(AsO4)2•8(H2O) P 21 2
08.EB.10 Metakahlerite Fe(UO2)2(AsO4)2•8(H2O) P 4/mmm 4/m 2/m 2/m
08.EB.10 Metakirchheimerite Co(UO2)2(AsO4)2•8(H2O) P 4/mmm 4/m 2/m 2/m
08.EB.10 Metalodevite Zn(UO2)2(AsO4)2•10(H2O) P 41/m 4/m
08.EB.10 Metanovacekite Mg(UO2)2(AsO4)2•4-8(H2O) P 4/n 4/m
08.EB.10 Metatorbernite Cu(UO2)2(PO4)2•8(H2O) P 4/n 4/m
08.EB.10 Przhevalskite Pb(UO2)2(PO4)2•4(H2O) Unk Tetra

Other Metanovacekite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Metanovacekite :
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: 40.02a.10.02 Strunz No: 08.EB.10





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