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Mineevite-(Y) Mineral Data

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General Mineevite-(Y) Information

Help on Chemical  Formula: Chemical Formula: Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2
Help on Composition: Composition: Molecular Weight = 2,115.35 gm
   Barium       6.49 %  Ba    7.25 % BaO
   Sodium      27.17 %  Na   36.62 % Na2O
   Gadolinium   4.46 %  Gd    5.14 % Gd2O3
   Dysprosium   1.54 %  Dy    1.76 % Dy2O3
   Yttrium      5.04 %  Y     6.40 % Y2O3
   Hydrogen     0.19 %  H     1.70 % H2O
   Carbon       8.52 %  C    31.21 % CO2
   Sulfur       3.03 %  S     7.57 % SO3
   Chlorine     1.68 %  Cl    1.68 % Cl
                 -   %   Cl   -0.38 % -O=Cl2   
   Oxygen      40.09 %  O
   Fluorine     1.80 %  F     1.80 % F
                 -   %   F    -0.76 % -O=F2    
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na25BaY1.2Gd0.6Dy0.2(HCO3)4(CO3)11(SO4)2ClF2
Help on IMA Status: IMA Status: Approved IMA 1992
Help on Locality: Locality: Mount Alluaiv, Lovozero Massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Dimitry A. Mineev (1935-1992), Russian mineralogist and Geochemist.
Help on Name Pronunciation: Name Pronunciation: Mineevite-(Y) + Pronunciation Say MINEEVITE-(Y)
Help on Synonym: Synonym: ICSD 39649
  PDF 46-1420
 

Mineevite-(Y) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:4.2027
Help on Cell Dimensions: Cell Dimensions: a = 8.811, c = 37.03, Z = 2; V = 2,489.63 Den(Calc)= 2.82
Help on Crystal System: Crystal System: Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 63/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.829(1), 2.27(0.9), 2.531(0.71),
 

Physical Properties of Mineevite-(Y)

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Green, Yellowish green, Colorless.
Help on Density: Density: 2.85
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luminescence: Luminescence: Fluorescent, Short UV=weak yellow green, Long UV=weak yellow green.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Mineevite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.03 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.02 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1855,KPDmeas= 0.1835,KC= 0.1893
Ncalc = 1.53 - 1.54
Help on Optical Data: Optical Data: Uniaxial (-), e=1.51, w=1.536, bire=0.0260.
 

Calculated Properties of Mineevite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.70 gm/cc
note: Specific Gravity of Mineevite-(Y) =2.82 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEMineevite-(Y) = 75.80 barns/electron
U=PEMineevite-(Y) x relectron= 205.01 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 6,134.70 (Gamma Ray American Petroleum Institute Units)
Concentration of Mineevite-(Y) per GRapi unit = 163.01 (PPM)

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

Estimated Radioactivity from Mineevite-(Y) - mild
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 / 8.78 cm 134,325 3.63E-06 6,134.70 2.02
100 gm / 4.08 cm 13,433 3.63E-07 613.47 0.20
10 gm / 1.89 cm 1,343 3.63E-08 61.35 0.02
1 gm / 8.78 mm 134 3.63E-09 6.13 0.00
0.1 gm / 4.08 mm 13 3.63E-10 0.61 0.00
0.01 gm / 1.89 mm 1 3.63E-11 0.06 0.00
0.001 gm / 0.88 mm 0 3.63E-12 0.01 0.00

Weight of pure Mineevite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.82 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 ( 0.30 % Th) From Sum REE Elements ( 6.00 % REE)
 

Mineevite-(Y) Classification

Help on  Dana Class: Dana Class: 17.01.14.01 (17)Compound Carbonates
  (17.01)with miscellaneous formulae
  (17.01.14)Dana Group
 
17.01.14.01 Mineevite-(Y) Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2 P 63/m 6/m
 
17.01.14.02 Reederite-(Y)! Na15Y2(CO3)9(SO3F)Cl P 6 6
Help on  Strunz Class: Strunz Class: 05.BF.25 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BF -With (Cl), SO4, PO4, TeO3
 
05.BF.25 Mineevite-(Y) Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2 P 63/m 6/m
 

Other Mineevite-(Y) Information

Help on References: References: PHYS. PROP.(Am.Min.,Vol.79,p764,1994;Dana8) OPTIC PROP.(Am.Min.,Vol.79,p764,1994)
Help on See Also: See Also: Links to other databases for Mineevite-(Y) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

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Print or Cut-and-Paste your Mineevite-(Y) Specimen Label here :

Mineevite-(Y)

Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2
Dana No: 17.01.14.01 Strunz No: 05.BF.25
Locality:

 

Notes:

 

 
   
 


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