Novacekite Mineral Data + Say NOVACEKITE

General Novacekite Information
Help on Chemical Formula: Chemical Formula: Mg(UO2)2(AsO4)2·12(H2O)
Help on Composition: Composition: Molecular Weight = 1,058.38 gm
   Magnesium   2.30 %  Mg    3.81 % MgO
   Uranium    44.98 %  U    51.03 % UO2
   Arsenic    14.16 %  As   21.72 % As2O5
   Hydrogen    2.29 %  H    20.43 % H2O
   Oxygen     36.28 %  O
             ______        ______ 
             100.00 %       96.98 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg(UO2)2(AsO4)2·12(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1951
Help on Locality: Locality: Link to MinDat.org Location Data.
 

Novacekite 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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Novacekite

Comments: Scanner image of massive, yellow novacekite covering matrix.
Location: Serra das ?guas,Bahia, Northeast Region, Brazil. Scale: Specimen size 4.1 cm.
© Paul M. Schumacher

Novacekite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.82137
Help on Cell Dimensions: Cell Dimensions: a = 7.11, c = 20.06, Z = 2; V = 1,014.08 Den(Calc)= 3.47
Help on Crystal System: Crystal System: Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: P 41/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.15(1), 3.58(0.9), 5.06(0.8),
 

Physical Properties of Novacekite

Help on Cleavage: Cleavage: [001] Perfect, [010] Indistinct, [110] Indistinct
Help on Color: Color: Light yellow, Straw yellow.
Help on Density: Density: 3.7
Help on Diaphaniety: Diaphaniety: Transparent to Opaque
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: yellow white
 

Optical Properties of Novacekite

Help on Dichroism (e): Dichroism (e): colorless.
Help on Dichroism (w): Dichroism (w): colorless.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.037 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.106 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1805,KPDmeas= 0.1693,KC= 0.1633
Help on Optical Data: Optical Data: Uniaxial (-), e=1.62-1.625, w=1.62-1.641, bire=0.0000-0.0160.
 

Calculated Properties of Novacekite

Help on Electron Density: Electron Density:

relectron=3.34 gm/cc
note: rNovacekite =3.70 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00571
Boson Index = 0.99429
Help on Photoelectric: Photoelectric:

PENovacekite =1,140.04 barns/electron
U=PENovacekite x relectron=3,810.12 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,463,108.38 (Gamma Ray American Petroleum Institute Units)

Novacekite 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) 8.78 ± 2.20 grams of pure Novacekite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 878.31 ±219.58 grams of pure Novacekite .

Estimated Radioactivity from Novacekite - 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 / 8.02 cm 80,513,770 2.18E-03 3,463,108.38 1,138.56
100 gm / 3.72 cm 8,051,377 2.18E-04 346,310.84 113.86
10 gm / 1.73 cm 805,138 2.18E-05 34,631.08 11.39
1 gm / 8.02 mm 80,514 2.18E-06 3,463.11 1.14
0.1 gm / 3.72 mm 8,051 2.18E-07 346.31 0.11
0.01 gm / 1.73 mm 805 2.18E-08 34.63 0.01
0.001 gm / 0.80 mm 81 2.18E-09 3.46 0.00

Weight of pure Novacekite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.70 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
 

Novacekite Classification
Help on Dana Class: Dana Class: 40.2a.10.1 (40)Hydrated Phosphates, etc
  (40.2a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++
  (40.2a.10)Dana Group
 
40.2a.10.1 Novacekite Mg(UO2)2(AsO4)2·12(H2O) P 41/n 4/m
 
40.2a.10.2 Metanovacekite Mg(UO2)2(AsO4)2·4-8(H2O) P 4/n 4/m
Help on Strunz Class: Strunz Class: VII/E.01-40 VII - Phosphates, Arsenates and Vanadates
  VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-
  VII/E.01 - Autunite group
 
VII/E.01-10 Trogerite H2(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m
 
VII/E.01-20 Sabugalite HAl(UO2)4(PO4)4·16(H2O) I 4/mmm 4/m 2/m 2/m
 
VII/E.01-30 Saleeite Mg(UO2)2(PO4)2·10(H2O) I 4/mmm 4/m 2/m 2/m
 
VII/E.01-35 Seelite-1 Mg[(UO2)(AsO3)x(AsO4)1-x]2·7(H2O) C 2/m 2/m
 
VII/E.01-35* Seelite-2 Mg(UO2)(AsO3)x(AsO4)1-x·7(H2O)(x=0.7) C 2/m 2/m
 
VII/E.01-40 Novacekite Mg(UO2)2(AsO4)2·12(H2O) P 41/n 4/m
 
VII/E.01-50 Kahlerite Fe(UO2)2(AsO4)2·10-12(H2O) P 41/n 4/m
 
VII/E.01-60 Fritzscheite Mn(UO2)2[(V,P)O4]2·4(H2O) Pnam 2/m 2/m 2/m
 
VII/E.01-70 Torbernite Cu(UO2)2(PO4)2·8-12(H2O) I 4/mmm 4/m 2/m 2/m
 
VII/E.01-80 Zeunerite Cu(UO2)2(AsO4)2·10-16(H2O) P 4/nnc 4/m 2/m 2/m
 
VII/E.01-90 Autunite Ca(UO2)2(PO4)2·10-12(H2O) I 4/mmm 4/m 2/m 2/m
 
VII/E.01-100 Uranospinite Ca(UO2)2(AsO4)2·10(H2O) I 4/mmm 4/m 2/m 2/m
 
VII/E.01-110 Uranocircite Ba(UO2)2(PO4)2·12(H2O) P 4/nnc 4/m 2/m 2/m
 
VII/E.01-120 Heinrichite Ba(UO2)2(AsO4)2·10-12(H2O) IA/mmm 4/m 2/m 2/m
 
VII/E.01-130 Sodium-autunite Na2(UO2)2(PO4)2·8(H2O) P 4/nmm 4/m 2/m 2/m
 

Other Novacekite 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 Novacekite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - Uranium Minerals 14 -École des Mines de Paris

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Novacekite

Mg(UO2)2(AsO4)2·12(H2O)
Dana No: 40.2a.10.1 Strunz No: VII/E.01-40
Locality:

 

Notes:

 
 
   
 
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