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Chukhrovite-(Nd) Mineral Data

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General Chukhrovite-(Nd) Information

Help on Chemical  Formula: Chemical Formula: Ca3(Nd,Y)Al2(SO4)F13•12(H2O)
Help on Composition: Composition: Molecular Weight = 857.24 gm
   Calcium        14.31 %  Ca   20.02 % CaO
   Lanthanum       1.94 %  La    2.28 % La2O3
   Cerium          1.14 %  Ce    1.34 % Ce2O3
   Praeseodymium   1.15 %  Pr    1.35 % Pr2O3
   Samarium        1.58 %  Sm    1.83 % Sm2O3
   Gadolinium      0.92 %  Gd    1.06 % Gd2O3
   Dysprosium      0.38 %  Dy    0.44 % Dy2O3
   Yttrium         1.56 %  Y     1.98 % Y2O3
   Holmium         0.19 %  Ho    0.22 % Ho2O3
   Aluminum        6.39 %  Al   12.07 % Al2O3
   Hydrogen        2.79 %  H    24.95 % H2O
   Sulfur          3.78 %  S     9.43 % SO3
   Neodymium       5.38 %  Nd    6.28 % Nd2O3
   Oxygen         29.54 %  O
   Fluorine       28.94 %  F    28.94 % F
                    -   %   F   -12.19 % -O=F2    
                 ______        ______ 
                 100.00 %       99.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3.06Nd0.32Y0.15La0.12Sm0.09Ce0.07Pr0.07Gd0.05Dy0.02Ho0.01Al2.03S1.01O3.96F13.06�11.87(H2O)
Help on Environment: Environment: Oxidized zone of molybdenum-tungsten deposit. Nd-dominant analogue of chukhrovite
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Kara-Oba, Betpakdala Desert, Kazakhstan Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Nd-dominant analogue of chukhrovite-(Y) and chukhrovite-(Ce).
Help on Synonym: Synonym: IMA2004-023
 

Chukhrovite-(Nd) Image

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  Chukhrovite-(Nd)

Comments: SEM image of chukhrovite-(Nd) crystals. (New Data on Minerals. M., 2005. Vol. 40).
Location: Oxidized zone of the Kara-Oba deposit (Central Kazakhstan). Scale: Scale bar 10µm.
© New Data on Minerals

Chukhrovite-(Nd) Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 16.759, Z = 8; V = 4,707.00 Den(Calc)= 2.42
Help on Crystal System: Crystal System: Isometric - Diploidal H-M Symbol (2/m 3) Space Group: F d3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.7(1), 3.22(0.8), 2.555(0.7),5.92(0.7), 2.18(0.6), 1.827(0.5), 2.24(0.5), 4.2(0.4),
 

Physical Properties of Chukhrovite-(Nd)

Help on Cleavage: Cleavage: {111} Indistinct, {111} Indistinct, {111} Indistinct
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.42
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: white
 

Calculated Properties of Chukhrovite-(Nd)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.39 gm/cc
note: Specific Gravity of Chukhrovite-(Nd) =2.42 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEChukhrovite-(Nd) = 72.18 barns/electron
U=PEChukhrovite-(Nd) x relectron= 172.20 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 13,438.27 (Gamma Ray American Petroleum Institute Units)
Concentration of Chukhrovite-(Nd) per GRapi unit = 74.41 (PPM)

Chukhrovite-(Nd) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from Chukhrovite-(Nd) - weak
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 / 9.24 cm 286,279 7.74E-06 13,438.27 4.42
100 gm / 4.29 cm 28,628 7.74E-07 1,343.83 0.44
10 gm / 1.99 cm 2,863 7.74E-08 134.38 0.04
1 gm / 9.24 mm 286 7.74E-09 13.44 0.00
0.1 gm / 4.29 mm 29 7.74E-10 1.34 0.00
0.01 gm / 1.99 mm 3 7.74E-11 0.13 0.00
0.001 gm / 0.92 mm 0 7.74E-12 0.01 0.00

Weight of pure Chukhrovite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.42 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
Estimated Thorium Activity ( 0.63 % Th) From Sum REE Elements (12.69 % REE)
 

Chukhrovite-(Nd) Classification

Help on  Dana Class: Dana Class: 12.01.05.04 (12)Compound Halides
  (12.01)with miscellaneous anions
  (12.01.05)Chukhrovite Group
 
12.01.05.01 Chukhrovite-(Y) Ca3(Y,Ce)Al2(SO4)F13•10(H2O) F d3 2/m 3
 
12.01.05.02 Chukhrovite-(Ce) Ca3(Ce,Y)Al2(SO4)F13•10(H2O) F d3 2/m 3
 
12.01.05.03 Meniaylovite! Ca4AlSi(SO4)F13•12(H2O) F d3 2/m 3
 
12.01.05.04 Chukhrovite-(Nd)! Ca3(Nd,Y)Al2(SO4)F13•12(H2O) F d3 2/m 3
Help on  Strunz Class: Strunz Class: 03.CG.10 03 - HALIDES
  03.C - Complex Halides
  03.CG -Aluminofluorides with CO3, SO4, PO4
 
03.CG.10 Chukhrovite-(Ce) Ca3(Ce,Y)Al2(SO4)F13•10(H2O) F d3 2/m 3
 
03.CG.10 Chukhrovite-(Y) Ca3(Y,Ce)Al2(SO4)F13•10(H2O) F d3 2/m 3
 
03.CG.10 Meniaylovite! Ca4AlSi(SO4)F13•12(H2O) F d3 2/m 3
 
03.CG.10 Chukhrovite-(Nd)! Ca3(Nd,Y)Al2(SO4)F13•12(H2O) F d3 2/m 3
 

Other Chukhrovite-(Nd) Information

Help on References: References: NAME( New Data on Minerals. M., 2005. Vol. 40) PHYS. PROP.(New Data on Minerals. M., 2005. Vol. 40) OPTIC PROP.(New Data on Minerals. M., 2005. Vol. 40)
Help on See Also: See Also: Links to other databases for Chukhrovite-(Nd) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Chukhrovite-(Nd)

Ca3(Nd,Y)Al2(SO4)F13•12(H2O)
Dana No: 12.01.05.04 Strunz No: 03.CG.10
Locality:

 

Notes:

 

 
   
 


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