Strelkinite Mineral Data + Say STRELKINITE


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General Strelkinite Information
Help on Chemical Formula: Chemical Formula: Na2(UO2)2V2O8·6(H2O)
Help on Composition: Composition: Molecular Weight = 924.00 gm
   Sodium     4.98 %  Na    6.71 % Na2O
   Uranium   51.52 %  U    58.45 % UO2
   Vanadium  11.03 %  V    19.68 % V2O5
   Hydrogen   1.31 %  H    11.70 % H2O
   Oxygen    31.17 %  O
            ______        ______ 
            100.00 %       96.54 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2(UO2)2V5+2O8·6(H2O)
Help on Environment: Environment: Carbonaceous-siliceous shales. Na analogue of carnotite.
Help on IMA Status: IMA Status: Approved IMA 1974
Help on Locality: Locality: Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for M. F. Strelkin (1905-1965), mineralogist interested in uranium ores, Russia.
 

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Strelkinite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.2727:1:3.9138
Help on Cell Dimensions: Cell Dimensions: a = 10.64, b = 8.36, c = 32.72, Z = 8; V = 2,910.46 Den(Calc)= 4.22
Help on Crystal System: Crystal System: OrthorhombicSpace Group: Pnmm,Pnm2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.68(1), 3.95(0.8), 4.08(0.6),
 

Physical Properties of Strelkinite

Help on Cleavage: Cleavage: [001] Perfect
Help on Color: Color: Golden yellow, Canary yellow.
Help on Density: Density: 4 - 4.2, Average = 4.09
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Powdery - Forms a loose, poorly-coherent pulverulent mass.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Fluorescent, Short UV=light green.
Help on Luster: Luster: Silky - Pearly
Help on Streak: Streak: light yellow
 

Optical Properties of Strelkinite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.143 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.11 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1975,KPDmeas= 0.2033,KC= 0.1779
Help on Optical Data: Optical Data: Biaxial (-), a=1.674-1.77, b=1.855-1.907, g=1.88-1.915, bire=0.1450-0.2060
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): yellow.
Help on Pleochroism (z): Pleochroism (z): pale yellow.
 

Calculated Properties of Strelkinite

Help on Electron Density: Electron Density:

relectron=3.73 gm/cc
note: rStrelkinite =4.22 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00413
Boson Index = 0.99587
Help on Photoelectric: Photoelectric:

PEStrelkinite =1,326.01 barns/electron
U=PEStrelkinite x relectron=4,941.70 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,878,241.80 (Gamma Ray American Petroleum Institute Units)

Strelkinite 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) 7.84 ± 1.96 grams of pure Strelkinite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 784.29 ±196.07 grams of pure Strelkinite .

Estimated Radioactivity from Strelkinite - 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 / 7.68 cm 92,222,823 2.49E-03 3,878,241.80 1,275.04
100 gm / 3.56 cm 9,222,282 2.49E-04 387,824.18 127.50
10 gm / 1.65 cm 922,228 2.49E-05 38,782.42 12.75
1 gm / 7.68 mm 92,223 2.49E-06 3,878.24 1.28
0.1 gm / 3.56 mm 9,222 2.49E-07 387.82 0.13
0.01 gm / 1.65 mm 922 2.49E-08 38.78 0.01
0.001 gm / 0.77 mm 92 2.49E-09 3.88 0.00

Weight of pure Strelkinite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.22 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
 

Strelkinite Classification
Help on Dana Class: Dana Class: 40.2a.29.1 (40)Hydrated Phosphates, etc
  (40.2a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++
  (40.2a.29)Dana Group
 
40.2a.29.1 Strelkinite Na2(UO2)2V2O8·6(H2O) Pnmm,Pnm2 Ortho
Help on Strunz Class: Strunz Class: VII/E.11-40 VII - Phosphates, Arsenates and Vanadates
  VII/E - Uranylphosphates and uranylvanadates with: [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-, uranyl-groupvanadates with [UO2]2+ - [V2O8]6-
  VII/E.11 - Tyuyamunite series
 
VII/E.11-10 Vanuralite Al(UO2)2(VO4)2(OH)·11(H2O) A2/a 2/m
 
VII/E.11-20 Metavanuralite Al(UO2)2(VO4)2(OH)·8(H2O) P 1or P1 Tri
 
VII/E.11-30 Sengierite Cu2(UO2)2V2O8·6(H2O) P 21/a 2/m
 
VII/E.11-40 Strelkinite Na2(UO2)2V2O8·6(H2O) Pnmm,Pnm2 Ortho
 
VII/E.11-50 Carnotite K2(UO2)2V2O8·3(H2O) P 21/a 2/m
 
VII/E.11-60 Margaritasite (Cs,K,H3O)2(UO2)2V2O8·(H2O) P 21/a 2/m
 
VII/E.11-70 Vanuranylite? (H3O,Ba,Ca,K)1.6(UO2)2V2O8·4(H2O)(?) C 2/c ? 2/m
 
VII/E.11-80 Tyuyamunite Ca(UO2)2V2O8·5-8(H2O) Pnan 2/m 2/m 2/m
 
VII/E.11-90 Metatyuyamunite Ca(UO2)2V2O8·3(H2O) Pnam 2/m 2/m 2/m
 
VII/E.11-100 Francevillite (Ba,Pb)(UO2)2V2O8·5(H2O) Pcan 2/m 2/m 2/m
 
VII/E.11-110 Curienite Pb(UO2)2V2O8·5(H2O) Pcan 2/m 2/m 2/m
 

Other Strelkinite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Strelkinite :
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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Print or Cut-and-Paste your Strelkinite Specimen Label here :

Strelkinite

Na2(UO2)2V2O8·6(H2O)
Dana No: 40.2a.29.1 Strunz No: VII/E.11-40
Locality:

 

Notes:

 
 
   
 
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