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Chistyakovaite Mineral Data

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General Chistyakovaite Information

Help on Chemical  Formula: Chemical Formula: Al(UO2)2(AsO4)2(F,OH)•6.5H2O
Help on Composition: Composition: Molecular Weight = 969.53 gm
   Uranium     49.10 %  U    55.70 % UO2
   Aluminum     2.67 %  Al    5.05 % Al2O3
   Arsenic     14.14 %  As   21.69 % As2O5
   Phosphorus   0.54 %  P     1.24 % P2O5
   Hydrogen     1.38 %  H    12.37 % H2O
   Oxygen      31.04 %  O
   Fluorine     1.12 %  F     1.12 % F
                 -   %   F    -0.47 % -O=F2    
              ______        ______ 
              100.00 %       96.70 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al0.96(UO2)2(AsO4)1.83(PO4)0.17F0.57OH0.31�6.5(H2O)
Help on Environment: Environment: Occurs in samples collected in the 1950s from the supergene zone of the Bota-Burum deposit. Related to threadgoldite
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Bota-Burum deposit, south of Alakol' Lake, southwestern Balkhash area, Zhambyl (Dzhambul) Region, Kazakhstan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for N.I. Chistyakova, a senior assistant at the All-Russia Research Institute of Mineral Resources (VIMS).
Help on Synonym: Synonym: IMA2005-003
 

Chistyakovaite Image

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  Chistyakovaite

Comments: Platy fragment of a pale yellow crystal of chistyakovaite sealed in plastic bag, co-type material.
Location: Bota-Burum U deposit, Kazakhstan. Scale: See Image.
© Rruff Database

Chistyakovaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.0418:1:2.004
Help on Cell Dimensions: Cell Dimensions: a = 19.99, b = 9.79, c = 19.62, Z = 8; beta = 110.7° V = 3,591.80 Den(Calc)= 3.59
Help on Crystal System: Crystal System: Monoclinic Space Group: P 2/m, P 2 or Pm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.14(1), 9.34(1), 4.76(0.27),4.87(0.2), 4.93(0.18), 3.55(0.15), 2.281(0.13),
 

Physical Properties of Chistyakovaite

Help on Cleavage: Cleavage: {100} Perfect, {001} Imperfect
Help on Color: Color: Yellow.
Help on Density: Density: 3.62
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Fluorescent, Short UV=bright green, Long UV=green.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light yellow
 

Optical Properties of Chistyakovaite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.082 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.091 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1594,KPDmeas= 0.1581,KC= 0.1461
Ncalc = 1.52 - 1.53
Help on Optical Data: Optical Data: Biaxial (-), a=1.557, b=1.58, g=1.58, bire=0.0230, 2V(Calc)=0, 2V(Meas)=10. Dispersion none.
 

Calculated Properties of Chistyakovaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.20 gm/cc
note: Specific Gravity of Chistyakovaite =3.62 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0036864254
Boson Index = 0.9963135746
Help on Photoelectric: Photoelectric: PEChistyakovaite =1,271.27 barns/electron
U=PEChistyakovaite x relectron=4,066.35 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,698,226.13 (Gamma Ray American Petroleum Institute Units)
Concentration of Chistyakovaite per GRapi unit = 270.40 (PPB)

Chistyakovaite 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) 8.22 ± 2.06 grams of pure Chistyakovaite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 822.47 ±205.62 grams of pure Chistyakovaite .

Estimated Radioactivity from Chistyakovaite - 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 / 8.08 cm 87,892,825 2.38E-03 3,698,226.13 1,215.86
100 gm / 3.75 cm 8,789,283 2.38E-04 369,822.61 121.59
10 gm / 1.74 cm 878,928 2.38E-05 36,982.26 12.16
1 gm / 8.08 mm 87,893 2.38E-06 3,698.23 1.22
0.1 gm / 3.75 mm 8,789 2.38E-07 369.82 0.12
0.01 gm / 1.74 mm 879 2.38E-08 36.98 0.01
0.001 gm / 0.81 mm 88 2.38E-09 3.70 0.00

Weight of pure Chistyakovaite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.62 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
 

Chistyakovaite Classification

Help on  Dana Class: Dana Class: 42.11.13.04 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.13)Vanuralite Group
 
42.11.13.01 Vanuralite Al(UO2)2(VO4)2(OH)•11(H2O) A2/a 2/m
 
42.11.13.02 Metavanuralite Al(UO2)2(VO4)2(OH)•8(H2O) P 1or P1 Tri
 
42.11.13.03 Threadgoldite Al(UO2)2(PO4)2(OH)•8(H2O) C 2/c 2/m
 
42.11.13.04 Chistyakovaite! Al(UO2)2(AsO4)2(F,OH)•6.5H2O P 2/m, P 2 or Pm Mono
Help on  Strunz Class: Strunz Class: 08.EB.20 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EB -UO2:RO4 = 1:1
 
08.EB.20 Threadgoldite Al(UO2)2(PO4)2(OH)•8(H2O) C 2/c 2/m
 
08.EB.20 Chistyakovaite! Al(UO2)2(AsO4)2(F,OH)•6.5H2O P 2/m, P 2 or Pm Mono
 

Other Chistyakovaite Information

Help on References: References: NAME( AmMin, v91, p1945) PHYS. PROP.(AmMin, v91, p1945) OPTIC PROP.(AmMin, v91, p1945)
Help on See Also: See Also: Links to other databases for Chistyakovaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - MinMax(Deutsch)
7 - MinMax(English)
8 - Mineralienatlas (Deutsch)
9 - QUT Mineral Atlas
10 - Ruff.Info

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Chistyakovaite

Al(UO2)2(AsO4)2(F,OH)•6.5H2O
Dana No: 42.11.13.04 Strunz No: 08.EB.20
Locality:

 

Notes: