General Chernikovite Information
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Chemical Formula: |
(H3O)2(UO2)2(PO4)2·6(H2O) |
Composition: |
Molecular Weight = 876.14 gm |
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Uranium 54.34 % U 61.64 % UO2 |
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Phosphorus 7.07 % P 16.20 % P2O5 |
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Hydrogen 2.07 % H 18.51 % H2O |
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Oxygen 36.52 % O |
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______ ______ |
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100.00 % 96.35 % = TOTAL OXIDE |
Empirical Formula: |
(H3O)2(UO2)2(PO4)2·6(H2O) |
IMA Status: |
Approved IMA 1988 |
Locality: |
Zod, Armenia and North Aksu, Kazakhstan. Link to MinDat.org Location Data. |
Name Origin: |
Named for A. P. Chernikov (1927-), Institute of Mineralogy, Geochemistry and Rare Elements, Moscow, Russia. |
Synonym: |
Hydrogen Autunite |
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Images:
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Chernikovite Crystallography
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Axial Ratios: |
a:c = 1:1.28817 |
Cell Dimensions: |
a = 7.02, c = 9.043, Z = 1; V = 445.64 Den(Calc)= 3.26 |
Crystal System: |
Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm |
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), |
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Physical Properties of Chernikovite
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Cleavage: |
[001] Perfect, [100] Distinct |
Color: |
Light yellow. |
Diaphaniety: |
Transparent to Translucent |
Habit: |
Micaceous - Platy texture with "flexible" plates. |
Hardness: |
2-2.5 - Gypsum-Finger Nail |
Luminescence: |
Fluorescent, Short UV=intense yellow green. |
Luster: |
Vitreous (Glassy) |
Streak: |
yellow white |
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Optical Properties of Chernikovite
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Dichroism (e): |
slight. |
Dichroism (w): |
slight. |
Gladstone-Dale: |
CI calc= -0.141 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1759,KC= 0.1542 |
Optical Data: |
Uniaxial (-), e=1.568, w=1.579, bire=0.0110. |
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Calculated Properties of Chernikovite
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Electron Density: |
relectron=2.92 gm/cc note: rChernikovite =3.26 gm/cc. |
Fermion Index |
Fermion Index = 0.00409 Boson Index = 0.99591 |
Photoelectric: |
PEChernikovite =1,378.06 barns/electron U=PEChernikovite x relectron=4,020.04 barns/cc. |
Radioactivity: |
GRapi = 4,144,441.52 (Gamma Ray American Petroleum Institute Units)
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
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 / 8.37 cm |
97,261,512 |
2.63E-03 |
4,144,441.52 |
1,362.56 |
| 100 gm / 3.88 cm |
9,726,151 |
2.63E-04 |
414,444.15 |
136.26 |
| 10 gm / 1.80 cm |
972,615 |
2.63E-05 |
41,444.42 |
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)
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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
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Chernikovite Classification
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Dana Class: |
40.2a.19.1 (40)Hydrated Phosphates, etc |
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(40.2a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++ |
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(40.2a.19)Dana Group |
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40.2a.19.1 Chernikovite (H3O)2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m |
Strunz Class: |
VII/E.02-170 VII - Phosphates, Arsenates and Vanadates |
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VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6- |
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VII/E.02 - Meta-autunite group |
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VII/E.02-10 Metanovacekite Mg(UO2)2(AsO4)2·4-8(H2O) P 4/n 4/m |
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VII/E.02-20 Bassetite Fe(UO2)2(PO4)2·8(H2O) P 21/m 2/m |
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VII/E.02-30 Metakahlerite Fe(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m |
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VII/E.02-40 Lehnerite Mn[UO2/PO4]2·8(H2O) P 21/n 2/m |
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VII/E.02-50 Metakirchheimerite Co(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m |
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VII/E.02-60 Metatorbernite Cu(UO2)2(PO4)2·8(H2O) P 4/n 4/m |
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VII/E.02-70 Metazeunerite Cu(UO2)2(AsO4)2·8(H2O) P 4/n 4/m |
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VII/E.02-80 Metalodevite Zn(UO2)2(AsO4)2·10(H2O) P 41/m 4/m |
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VII/E.02-90 Meta-autunite Ca(UO2)2(PO4)2·2-6(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-95 Sodium meta-autunite! Na2(UO2)2(PO4)2·6-8(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-100 Meta-uranospinite Ca(UO2)2(AsO4)2·8(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-110 Meta-uranocircite Ba(UO2)2(PO4)2·6-8(H2O) P 21 2 |
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VII/E.02-120 Metaheinrichite Ba(UO2)2(AsO4)2·8(H2O) P 41/? 4/m |
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VII/E.02-130 Sodium-uranospinite (Na2,Ca)(UO2)2(AsO4)2·5(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-140 Meta-ankoleite K2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-150 Abernathyite K(UO2)(AsO4)·4(H2O) P 4/ncc 4/m 2/m 2/m |
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VII/E.02-160 Uramphite (NH4)(UO2)(PO4)·3(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-170 Chernikovite (H3O)2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-180 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4·5(H2O)(?) Unk Ortho |
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VII/E.02-190 Ulrichite CaCu(UO2)(PO4)2·4(H2O) C 2/m 2/m |
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Other Chernikovite Information
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References: |
NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.74,p1400,1989) OPTIC PROP.(Dana8) |
See Also: |
Links to other databases for Chernikovite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - EUROmin Project
4 -Google Images
5 -Google Scholar
6 -Handbook of Mineralogy (UofA)
7 -MinDAT
8 -MinMax(Deutsch)
9 -MinMax(English)
10 -Mineralienatlas (Deutsch)
11 -QUT Mineral Atlas
12 - Uranium Minerals
13 -École des Mines de Paris
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Chernikovite
(H3O)2(UO2)2(PO4)2·6(H2O)
Dana No: 40.2a.19.1 Strunz No: VII/E.02-170
Locality:
Notes:
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