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Chernikovite Mineral Data

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General Chernikovite Information

Help on Chemical  Formula: Chemical Formula: (H3O)2(UO2)2(PO4)2•6(H2O)
Help on Composition: Composition: Molecular Weight = 876.14 gm
   Uranium     54.34 %  U    61.64 % UO2
   Phosphorus   7.07 %  P    16.20 % P2O5
   Hydrogen     2.07 %  H    18.51 % H2O
   Oxygen      36.52 %  O
              ______        ______ 
              100.00 %       96.35 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (H3O)2(UO2)2(PO4)2•6(H2O)
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: Zod, Armenia and North Aksu, Kazakhstan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for A. P. Chernikov (1927-), Institute of Mineralogy, Geochemistry and Rare Elements, Moscow, Russia.
Help on Synonym: Synonym: Hydrogen Autunite

Chernikovite Image

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Comments: Greenish-yellow crystals of chernikovite intimately intergrown with meta-autunite.
Location: Rockelmann Quarry, Schwarzenberg, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture Size 3.5 mm.
© Thomas Witzke / Abraxas-Verlag

Chernikovite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.28817
Help on Cell Dimensions: Cell Dimensions: a = 7.02, c = 9.043, Z = 1; V = 445.64 Den(Calc)= 3.26
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.03(1), 3.8(0.9), 3.27(0.8),2.77(0.7), 3.51(0.7), 2.96(0.6), 2.16(0.5), 5.56(0.5),

Physical Properties of Chernikovite

Help on Cleavage: Cleavage: {001} Perfect, {100} Distinct
Help on Color: Color: Light yellow.
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Micaceous - Platy texture with "flexible" plates.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luminescence: Luminescence: Fluorescent, Short UV=intense yellow green, Long UV=intense yellow green.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: yellow white

Optical Properties of Chernikovite

Help on Dichroism (e): Dichroism (e): slight.
Help on Dichroism (w): Dichroism (w): slight.
Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.141 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1759,KC= 0.1542
Ncalc = 1.5
Help on Optical Data: Optical Data: Uniaxial (-), e=1.568, w=1.579, bire=0.0110.

Calculated Properties of Chernikovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.92 gm/cc
note: Specific Gravity of Chernikovite =3.26 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0040906102
Boson Index = 0.9959093898
Help on Photoelectric: Photoelectric: PEChernikovite =1,378.06 barns/electron
U=PEChernikovite x relectron=4,020.04 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,144,443.22 (Gamma Ray American Petroleum Institute Units)
Concentration of Chernikovite per GRapi unit = 241.29 (PPB)

Chernikovite 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) 7.34 ± 1.83 grams of pure Chernikovite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 733.91 ±183.48 grams of pure Chernikovite .

Estimated Radioactivity from Chernikovite - very strong
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 8.37 cm 97,261,524 2.63E-03 4,144,443.22 1,362.56
100 gm / 3.88 cm 9,726,152 2.63E-04 414,444.32 136.26
10 gm / 1.80 cm 972,615 2.63E-05 41,444.43 13.63
1 gm / 8.37 mm 97,262 2.63E-06 4,144.44 1.36
0.1 gm / 3.88 mm 9,726 2.63E-07 414.44 0.14
0.01 gm / 1.80 mm 973 2.63E-08 41.44 0.01
0.001 gm / 0.84 mm 97 2.63E-09 4.14 0.00

Weight of pure Chernikovite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.26 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

Chernikovite Classification

Help on  Dana Class: Dana Class: 40.02a.19.01 (40)Hydrated Phosphates, etc
  (40.02a)where A++ (B++)2 (XO4) � x(H2O), containing (UO2)++
  (40.02a.19)Dana Group
40.02a.19.01 Chernikovite (H3O)2(UO2)2(PO4)2•6(H2O) P 4/nmm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.EB.15 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EB -UO2:RO4 = 1:1
08.EB.15 Abernathyite K(UO2)(AsO4)•4(H2O) P 4/ncc 4/m 2/m 2/m
08.EB.15 Chernikovite (H3O)2(UO2)2(PO4)2•6(H2O) P 4/nmm 4/m 2/m 2/m
08.EB.15 Meta-ankoleite K2(UO2)2(PO4)2•6(H2O) P 4/nmm 4/m 2/m 2/m
08.EB.15 Natrouranospinite (Na2,Ca)(UO2)2(AsO4)2•5(H2O) P 4/nmm 4/m 2/m 2/m
08.EB.15 Uramphite (NH4)(UO2)(PO4)•3(H2O) P 4/nmm 4/m 2/m 2/m
08.EB.15 Trogerite H2(UO2)2(AsO4)2•8(H2O) P 4/mmm 4/m 2/m 2/m
08.EB.15 Uramarsite! (NH4,H3O)2(UO2)2(AsO4,PO4)2•6H2O P 4/mmm 4/m 2/m 2/m

Other Chernikovite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.74,p1400,1989;Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Chernikovite :
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
15 - Uranium Minerals

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Dana No: 40.02a.19.01 Strunz No: 08.EB.15





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