Mineralogy Database

Strelkinite Mineral Data

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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.
Help on Name Pronunciation: Name Pronunciation: Strelkinite + Pronunciation Say STRELKINITE
 

Strelkinite Image

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  Strelkinite

Comments: Yellow massive strelkinite.
Location: Basaral occurrence, southwest Balkhash region, Kazakhstan. Scale: See Image.
© Rruff Database

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: Orthorhombic Space 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
Ncalc = 1.71 - 1.75
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: Bulk Density (Electron Density)=3.73 gm/cc
note: Specific Gravity of Strelkinite =4.22 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0041367455
Boson Index = 0.9958632545
Help on Photoelectric: Photoelectric: PEStrelkinite =1,326.01 barns/electron
U=PEStrelkinite x relectron=4,941.70 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,878,243.92 (Gamma Ray American Petroleum Institute Units)
Concentration of Strelkinite per GRapi unit = 257.85 (PPB)

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 92,222,838 2.49E-03 3,878,243.92 1,275.04
100 gm / 3.56 cm 9,222,284 2.49E-04 387,824.39 127.50
10 gm / 1.65 cm 922,228 2.49E-05 38,782.44 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: 40.02a.29.01 (40)Hydrated Phosphates, etc
  (40.02a)where A++ (B++)2 (XO4) � x(H2O), containing (UO2)++
  (40.02a.29)Dana Group
 
40.02a.29.01 Strelkinite Na2(UO2)2V2O8•6(H2O) Pnmm,Pnm2 Ortho
Help on  Strunz Class: Strunz Class: 04.HB.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.H - V[5,6] Vanadates
  04.HB -Uranyl Sorovanadates
 
04.HB.30 Strelkinite Na2(UO2)2V2O8•6(H2O) Pnmm,Pnm2 Ortho
 

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 - 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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Print or Cut-and-Paste your Strelkinite Specimen Label here :

Strelkinite

Na2(UO2)2V2O8•6(H2O)
Dana No: 40.02a.29.01 Strunz No: 04.HB.30
Locality:

 

Notes:

 

 
   
 


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