Sazhinite-(Ce) Mineral Data

Sazhinite-(Ce) Mineral Data
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General Sazhinite-(Ce) Information

Help on Chemical Formula: Chemical Formula: Na2Ce[Si6O14(OH)]•n(H2O), (n >= 1.5)
Help on Composition: Composition: Molecular Weight = 649.65 gm
   Sodium     7.08 %  Na    9.54 % Na2O
   Cerium    21.57 %  Ce   25.26 % Ce2O3
   Silicon   25.94 %  Si   55.49 % SiO2
   Hydrogen   1.09 %  H     9.71 % H2O
   Oxygen    44.33 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2•1.5(H2O)CeSi6O14(OH)•1.5(H2O)
Help on Environment: Environment: Cavities in sodalite zenoliths.
Help on IMA Status: IMA Status: Approved IMA 1974
Help on Locality: Locality: Mt. Karnasurt, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Nikolai Petrovich Sazhin (1898-1969), Founder of the Russian rare-earth industry.
Help on Name Pronunciation: Name Pronunciation: Sazhinite-(Ce) + Pronunciation Say SAZHINITE-(CE)
Help on Synonym: Synonym: ICSD 36401
  PDF 30-1176
 

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Sazhinite-(Ce) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.4801:1:0.4705
Help on Cell Dimensions: Cell Dimensions: a = 7.5, b = 15.62, c = 7.35, Z = 2; V = 861.05 Den(Calc)= 2.51
Help on Crystal System: Crystal System: Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: Pmm2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.23(1), 3.37(0.75), 5.23(0.55),
Click Here for Large Sazhinite-(Ce) Structure Window Crystal Structure:

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Shumyatskaya N G , Voronkov A A , Pyatenko Y A , Soviet Physics Crystallography , 25 (1980) p.419-423, Sazhinite, Na2Ce[Si6O14(OH)]*nH2O: a new representative of the dalyite family in crystal chemistry

 

Physical Properties of Sazhinite-(Ce)

Help on Cleavage: Cleavage: {100} Perfect, {010} Perfect, {001} Very Good
Help on Color: Color: Gray, Gray white, Pearl white.
Help on Density: Density: 2.61
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Sazhinite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.045 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2121,KPDmeas= 0.204,KC= 0.2029
Ncalc = 1.51 - 1.53
Help on Optical Data: Optical Data: Biaxial (+), a=1.525, b=1.528, g=1.544, bire=0.0190, 2V(Calc)=48, 2V(Meas)=47.
 

Calculated Properties of Sazhinite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.53 gm/cc
note: Specific Gravity of Sazhinite-(Ce) =2.61 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PESazhinite-(Ce) = 103.85 barns/electron
U=PESazhinite-(Ce) x relectron= 262.85 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 22,309.60 (Gamma Ray American Petroleum Institute Units)
Concentration of Sazhinite-(Ce) per GRapi unit = 44.82 (PPM)

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

Estimated Radioactivity from Sazhinite-(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 / 9.01 cm 483,116 1.31E-05 22,309.60 7.33
100 gm / 4.18 cm 48,312 1.31E-06 2,230.96 0.73
10 gm / 1.94 cm 4,831 1.31E-07 223.10 0.07
1 gm / 9.01 mm 483 1.31E-08 22.31 0.01
0.1 gm / 4.18 mm 48 1.31E-09 2.23 0.00
0.01 gm / 1.94 mm 5 1.31E-10 0.22 0.00
0.001 gm / 0.90 mm 0 1.31E-11 0.02 0.00

Weight of pure Sazhinite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.61 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 ( 1.08 % Th) From Sum REE Elements (21.57 % REE)
 

Sazhinite-(Ce) Classification
Help on Dana Class: Dana Class: 72.02.01.03 (72)Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
  (72.02)with 4-, 6-, and 8-membered rings
  (72.02.01)Dalylite group
 
72.02.01.01 Dalyite K2ZrSi6O15 P1 1
 
72.02.01.02 Davanite K2TiSi6O15 P1 1
 
72.02.01.03 Sazhinite-(Ce) Na2Ce[Si6O14(OH)]•n(H2O),(n>=1.5) Pmm2 mm2
 
72.02.01.04 Sazhinite-(La)! Na3La[Si6O15]•2(H2O) Pmm2 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 09.EA.30 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EA -Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
 
09.EA.30 Sazhinite-(Ce) Na2Ce[Si6O14(OH)]•n(H2O),(n>=1.5) Pmm2 mm2
 
09.EA.30 Sazhinite-(La)! Na3La[Si6O15]•2(H2O) Pmm2 2/m 2/m 2/m
 

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

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

Sazhinite-(Ce)

Na2Ce[Si6O14(OH)]•n(H2O), (n >= 1.5)
Dana No: 72.02.01.03 Strunz No: 09.EA.30
Locality:

 

Notes: