Chistyakovaite Mineral Data

Advertisment

John Betts - Fine Minerals, New York. Dealers of Fine Minerals and Natural Crystal Clusters since 1989. We buy rock collections, we buy gem collections, we buy mineral collections.

Our Mission is Simple: RMS will be the go-to portal for all mineral, gem and rock shows in the USA

McDougall Minerals sells high-quality mineral specimens from all over the world to collectors of all levels, from beginners to connoisseurs

Your premier supplier of quality mineral specimens from Southern Africa and the world at large

General Chistyakovaite Information

Chemical Formula:

Al(UO2)2(AsO4)2(F,OH)•6.5H2O

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

Empirical Formula:

Al_0.96(UO₂)₂(AsO₄)_1.83(PO₄)_0.17F_0.57OH_0.31·6.5(H₂O)

Environment:

Occurs in samples collected in the 1950s from the supergene zone of the Bota-Burum deposit. Related to threadgoldite

IMA Status:

Approved IMA 2005 (Dana # Added)

Locality:

Bota-Burum deposit, south of Alakol' Lake, southwestern Balkhash area, Zhambyl (Dzhambul) Region, Kazakhstan. Link to MinDat.org Location Data.

Name Origin:

Named for N.I. Chistyakova, a senior assistant at the All-Russia Research Institute of Mineral Resources (VIMS).

Synonym:

IMA2005-003

Chistyakovaite Image

Images:

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

Axial Ratios:

a:b:c =2.0418:1:2.004

Cell Dimensions:

a = 19.99, b = 9.79, c = 19.62, Z = 8; beta = 110.7° V = 3,591.80 Den(Calc)= 3.59

Crystal System:

MonoclinicSpace Group: P 2/m, P 2 or Pm

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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

Cleavage:

{100} Perfect, {001} Imperfect

Color:

Yellow.

Density:

3.62

Diaphaneity:

Transparent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).

Hardness:

2.5 - Finger Nail

Luminescence:

Fluorescent, Short UV=bright green, Long UV=green.

Luster:

Vitreous (Glassy)

Streak:

light yellow

Optical Properties of Chistyakovaite

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

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

Electron Density:

Bulk Density (Electron Density)=3.20 gm/cc
note: Specific Gravity of Chistyakovaite =3.62 gm/cc.

Fermion Index:

Fermion Index = 0.0036864254
Boson Index = 0.9963135746

Photoelectric:

PE_{Chistyakovaite}=1,271.27 barns/electron
U=PE_{Chistyakovaite} x r_electron=4,066.35 barns/cc.

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 Becquerels (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

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

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

References:

NAME( AmMin, v91, p1945) PHYS. PROP.(AmMin, v91, p1945) OPTIC PROP.(AmMin, v91, p1945)

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

Search for Chistyakovaite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Chistyakovaite :

Strict Standards: main() [function.main]: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CDT/-5.0/DST' instead in /home/webminer/public_html/MySQL/openx/Showadvertisers_text.php on line 4

Notice: Undefined index: mineralname in /home/webminer/public_html/MySQL/openx/Showadvertisers_text.php on line 4

Translate Chistyakovaite Mineral Data :

Ask about Chistyakovaite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Chistyakovaite

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

Notes: