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Nordite-(Ce) Mineral Data

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General Nordite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: (Ce,La,Ca)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17
Help on Composition: Composition: Molecular Weight = 763.83 gm
   Sodium      8.43 %  Na   11.36 % Na2O
   Strontium   5.74 %  Sr    6.78 % SrO
   Calcium     2.62 %  Ca    3.67 % CaO
   Lanthanum   5.46 %  La    6.40 % La2O3
   Cerium     11.01 %  Ce   12.89 % Ce2O3
   Magnesium   0.95 %  Mg    1.58 % MgO
   Manganese   2.88 %  Mn    3.71 % MnO
   Zinc        3.42 %  Zn    4.26 % ZnO
   Iron        2.19 %  Fe    0.94 % FeO /  2.09 % Fe2O3
   Silicon    21.69 %  Si   46.41 % SiO2
   Oxygen     35.61 %  O
             ______        ______ 
             100.00 %      100.10 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2.8Mn2+0.2Sr0.5Ca0.5La0.3Ce0.6Zn0.4Mg0.3Mn2+0.2Fe2+0.1Si5.9Fe3+0.2O17
Help on Environment: Environment: Sodalite syenite pegmatite.
Help on IMA Status: IMA Status: Approved IMA 1958
Help on Locality: Locality: Near the Chinglusuai River and Motchusuai River, Lovozero Massif, Kola Pininuula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Analog to the La-dominant nordite-(La) which was named after the word for north because of its northern origin in the Lovozero Massif.
Help on Name Pronunciation: Name Pronunciation: Nordite-(Ce) Say NORDITE-(CE)
 

Nordite-(Ce) Image

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  Nordite-(Ce)

Comments: Brownish rosette of nordite-(Ce) with visible single crystal morphology. Associated minerals are white etched natrosilite and minor black prismatic aegirine.
Location: Palitra pegmatite (Palette pegmatite), Kedykverpakhk Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Crystal Size 4 mm.
© Pavel M. Kartashov

Nordite-(Ce) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.7307:1:3.7307
Help on Cell Dimensions: Cell Dimensions: a = 14.2, b = 5.2, c = 19.4, Z = 8; V = 1,432.50 Den(Calc)= 7.08
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pcca
 

Physical Properties of Nordite-(Ce)

Help on Cleavage: Cleavage: {010} Distinct
Help on Color: Color: Light brown, Dark brown, Blackish brown.
Help on Density: Density: 6.43 - 6.49, Average = 6.46
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Lamellar - Thin laminae producing a lamellar structure.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: light brown
 

Optical Properties of Nordite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.481 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.526 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.0896,KPDmeas= 0.0982,KC= 0.1893
Ncalc = 2.22 - 2.34
Help on Optical Data: Optical Data: Biaxial (-), a=1.619-1.621, b=1.63-1.64, g=1.642-1.655, bire=0.0230-0.0340, 2V(Calc)=82-90, 2V(Meas)=<30.
 

Calculated Properties of Nordite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.15 gm/cc
note: Specific Gravity of Nordite-(Ce) =6.46 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PENordite-(Ce) = 88.84 barns/electron
U=PENordite-(Ce) x relectron= 546.55 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 16,721.77 (Gamma Ray American Petroleum Institute Units)
Concentration of Nordite-(Ce) per GRapi unit = 59.80 (PPM)

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

Estimated Radioactivity from Nordite-(Ce) - 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 / 6.66 cm 368,745 9.97E-06 16,721.77 5.50
100 gm / 3.09 cm 36,875 9.97E-07 1,672.18 0.55
10 gm / 1.44 cm 3,687 9.97E-08 167.22 0.05
1 gm / 6.66 mm 369 9.97E-09 16.72 0.01
0.1 gm / 3.09 mm 37 9.97E-10 1.67 0.00
0.01 gm / 1.44 mm 4 9.97E-11 0.17 0.00
0.001 gm / 0.67 mm 0 9.97E-12 0.02 0.00

Weight of pure Nordite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 6.46 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 ( 0.82 % Th) From Sum REE Elements (16.46 % REE)
 

Nordite-(Ce) Classification

Help on  Dana Class: Dana Class: 72.05.02.02 (72)Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
  (72.05)with corrugated and complex layers
  (72.05.02)Leucospenite and related species
 
72.05.02.01 Leucosphenite Na4BaTi2O2[B2Si10O28] C 2/m 2/m
 
72.05.02.02 Nordite-(Ce) (Ce,La,Ca)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17 Pcca 2/m 2/m 2/m
 
72.05.02.03 Nordite-(La) (Na,Mn)3(Sr,Ca)(La,Ce)(Zn,Mg)Si6O17 Pcca 2/m 2/m 2/m
 
72.05.02.04 Semenovite (Na,Ca)9(Ce,La)2(Fe,Mn)(Si,Be)20(O,OH,F)48 Pmmn 2/m 2/m 2/m
 
72.05.02.05 Ferronordite-(Ce)! Na3SrCeFeSi6O17 Pcca 2/m 2/m 2/m
 
72.05.02.06 Manganonordite-(Ce)! Na3SrCeMnSi6O17 Pcca 2/m 2/m 2/m
 
72.05.02.07 Ferronordite-(La)! Na3Sr(La,Ce)FeSi6O17 Pcca 2/m 2/m 2/m
 
72.05.02.08 Bussyite-(Ce)! (Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4 C 2/c 2/m
Help on  Strunz Class: Strunz Class: 09.DO.15 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DO -Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains
 
09.DO.15 Manganonordite-(Ce)! Na3SrCeMnSi6O17 Pcca 2/m 2/m 2/m
 
09.DO.15 Ferronordite-(Ce)! Na3SrCeFeSi6O17 Pcca 2/m 2/m 2/m
 
09.DO.15 Nordite-(Ce) (Ce,La,Ca)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17 Pcca 2/m 2/m 2/m
 
09.DO.15 Nordite-(La) (Na,Mn)3(Sr,Ca)(La,Ce)(Zn,Mg)Si6O17 Pcca 2/m 2/m 2/m
 
09.DO.15 Ferronordite-(La)! Na3Sr(La,Ce)FeSi6O17 Pcca 2/m 2/m 2/m
 

Other Nordite-(Ce) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Nordite-(Ce) :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Print or Cut-and-Paste your Nordite-(Ce) Specimen Label here :

Nordite-(Ce)

(Ce,La,Ca)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17
Dana No: 72.05.02.02 Strunz No: 09.DO.15
Locality:

 

Notes:

 

 
   
 


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