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Tundrite-(Nd) Mineral Data

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General Tundrite-(Nd) Information

Help on Chemical  Formula: Chemical Formula: Na3(Nd,La)4(Ti,Nb)2(SiO4)2(CO3)3O4(OH)•2(H2O)
Help on Composition: Composition: Molecular Weight = 1,240.10 gm
   Sodium      5.56 %  Na    7.50 % Na2O
   Lanthanum  11.20 %  La   13.14 % La2O3
   Titanium    5.79 %  Ti    9.66 % TiO2
   Niobium     3.75 %  Nb    5.36 % Nb2O5
   Silicon     4.53 %  Si    9.69 % SiO2
   Hydrogen    0.41 %  H     3.63 % H2O
   Carbon      2.91 %  C    10.65 % CO2
   Neodymium  34.89 %  Nd   40.70 % Nd2O3
   Oxygen     30.96 %  O
             ______        ______ 
             100.00 %      100.32 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3Nd3LaTi1.5Nb0.5(SiO4)2(CO3)3O4(OH)�2(H2O)
Help on Environment: Environment: Pegmatite veins associated with layered nepheline syenite.
Help on IMA Status: IMA Status: Approved IMA 1968
Help on Locality: Locality: Ilimaussaq intrusion, at Kringlerne, Kangerdluarssuk Plateau, southern Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its relation to tundrite-(Ce), and its neodymium content.
Help on Name Pronunciation: Name Pronunciation: Tundrite-(Nd) Say TUNDRITE-(ND)
 

Tundrite-(Nd) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5426:1:0.3641
Help on Cell Dimensions: Cell Dimensions: a = 7.51, b = 13.84, c = 5.04, Z = 1; alpha = 98°, beta = 70.667°, gamma = 99° V = 483.47 Den(Calc)= 4.26
Help on Crystal System: Crystal System: Triclinic - Pedial H-M Symbol (1) Space Group: P1
 

Physical Properties of Tundrite-(Nd)

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Yellow, Greenish yellow.
Help on Density: Density: 3.7
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Tundrite-(Nd)

Help on Optical Data: Optical Data: NCalc= 1.83 - from Gladstone-Dale relationship (KC = 0.1967) where Ncalc=Dcalc*KC+1
NCalc= 1.73 - from Gladstone-Dale relationship (KC = 0.1967) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Tundrite-(Nd)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.87 gm/cc
note: Specific Gravity of Tundrite-(Nd) =4.24 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.08
Boson Index = 0.92
Help on Photoelectric: Photoelectric: PETundrite-(Nd) = 260.03 barns/electron
U=PETundrite-(Nd) x relectron=1,007.30 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 44,921.97 (Gamma Ray American Petroleum Institute Units)
Concentration of Tundrite-(Nd) per GRapi unit = 22.26 (PPM)

Tundrite-(Nd) 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) 677.10 ±169.27 grams of pure Tundrite-(Nd) .

Estimated Radioactivity from Tundrite-(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 / 7.67 cm 1,032,533 2.79E-05 44,921.97 14.77
100 gm / 3.56 cm 103,253 2.79E-06 4,492.20 1.48
10 gm / 1.65 cm 10,325 2.79E-07 449.22 0.15
1 gm / 7.67 mm 1,033 2.79E-08 44.92 0.01
0.1 gm / 3.56 mm 103 2.79E-09 4.49 0.00
0.01 gm / 1.65 mm 10 2.79E-10 0.45 0.00
0.001 gm / 0.77 mm 1 2.79E-11 0.04 0.00

Weight of pure Tundrite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.24 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 ( 2.30 % Th) From Sum REE Elements (46.10 % REE)
 

Tundrite-(Nd) Classification

Help on  Dana Class: Dana Class: 17.01.11.02 (17)Compound Carbonates
  (17.01)with miscellaneous formulae
  (17.01.11)Tundrite Group
 
17.01.11.01 Tundrite-(Ce) Na2Ce2TiO2(SiO4)(CO3)2 P1 1
 
17.01.11.02 Tundrite-(Nd) Na3(Nd,La)4(Ti,Nb)2(SiO4)2(CO3)3O4(OH)•2(H2O) P1 1
Help on  Strunz Class: Strunz Class: 09.AH.10 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AH -Nesosilicates with CO3, SO4, PO4, etc.
 
09.AH.10 Tundrite-(Ce) Na2Ce2TiO2(SiO4)(CO3)2 P1 1
 
09.AH.10 Tundrite-(Nd) Na3(Nd,La)4(Ti,Nb)2(SiO4)2(CO3)3O4(OH)•2(H2O) P1 1
 

Other Tundrite-(Nd) Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Tundrite-(Nd) :
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

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Print or Cut-and-Paste your Tundrite-(Nd) Specimen Label here :

Tundrite-(Nd)

Na3(Nd,La)4(Ti,Nb)2(SiO4)2(CO3)3O4(OH)•2(H2O)
Dana No: 17.01.11.02 Strunz No: 09.AH.10
Locality:

 

Notes:

 

 
   
 


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