Mineralogy Database

Manganonordite-(Ce) Mineral Data

Search Webmineral :

General Manganonordite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: Na3SrCeMn++Si6O17
Help on Composition: Composition: Molecular Weight = 792.15 gm
   Sodium      8.71 %  Na   11.74 % Na2O
   Strontium  11.06 %  Sr   13.08 % SrO
   Cerium     17.69 %  Ce   20.72 % Ce2O3
   Manganese   6.94 %  Mn    8.96 % MnO
   Silicon    21.27 %  Si   45.51 % SiO2
   Oxygen     34.34 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3SrCeMn2+Si6O17
Help on Environment: Environment: In the central (ussingite) zone of hyperagpaitic pegmatite in sodalite nepheline syenites and in ussingite veinlets. The manganese analogue of nordite-(Ce) and ferronordite-(Ce).
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Chinlusuia River, Lovozero Alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Mn++ dominant analogue of nordite-(Ce). Nordite series is named after the word for north because of its northern origin in the Lovozero Massif.
Help on Name Pronunciation: Name Pronunciation: Manganonordite-(Ce) Say MANGANONORDITE-(CE)
Help on Synonym: Synonym: ICSD 88885
  PDF 50-1638

Manganonordite-(Ce) Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: Light brown radial aggregates of manganonordite-(Ce) in ussingite.
Location: Mt. Punkuruaiv, Lovozero, Kola Peninsula, Russia. Scale: Not Given.
© Diederik Visser

Manganonordite-(Ce) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7234:1:0.2575
Help on Cell Dimensions: Cell Dimensions: a = 14.86, b = 20.54, c = 5.29, Z = 4; V = 1,614.64 Den(Calc)= 3.26
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pcca
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.215(1), 2.965(0.83), 3.326(0.67),

Physical Properties of Manganonordite-(Ce)

Help on Cleavage: Cleavage: {100} Perfect
Help on Color: Color: Pale brown, Colorless, Brown.
Help on Density: Density: 3.43 - 3.56, Average = 3.49
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Rosette - Bundled tabular aggregates resembling rose flower petals.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 5-5.5 - Apatite-Knife Blade
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Manganonordite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.06 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1944,KPDmeas= 0.1813,KC= 0.1834
Ncalc = 1.6 - 1.65
Help on Optical Data: Optical Data: Biaxial (+), a=1.623, b=1.636, g=1.642, bire=0.0190, 2V(Calc)=66, 2V(Meas)=60. Dispersion weak, r > v.

Calculated Properties of Manganonordite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.30 gm/cc
note: Specific Gravity of Manganonordite-(Ce) =3.50 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEManganonordite-(Ce) = 101.66 barns/electron
U=PEManganonordite-(Ce) x relectron= 335.51 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 17,815.79 (Gamma Ray American Petroleum Institute Units)
Concentration of Manganonordite-(Ce) per GRapi unit = 56.13 (PPM)

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

Estimated Radioactivity from Manganonordite-(Ce) - weak
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 8.18 cm 396,212 1.07E-05 17,815.79 5.86
100 gm / 3.79 cm 39,621 1.07E-06 1,781.58 0.59
10 gm / 1.76 cm 3,962 1.07E-07 178.16 0.06
1 gm / 8.18 mm 396 1.07E-08 17.82 0.01
0.1 gm / 3.79 mm 40 1.07E-09 1.78 0.00
0.01 gm / 1.76 mm 4 1.07E-10 0.18 0.00
0.001 gm / 0.82 mm 0 1.07E-11 0.02 0.00

Weight of pure Manganonordite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.50 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 ( 0.88 % Th) From Sum REE Elements (17.69 % REE)

Manganonordite-(Ce) Classification

Help on  Dana Class: Dana Class: (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 Leucosphenite Na4BaTi2O2[B2Si10O28] C 2/m 2/m Nordite-(Ce) (Ce,La,Ca)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17 Pcca 2/m 2/m 2/m Nordite-(La) (Na,Mn)3(Sr,Ca)(La,Ce)(Zn,Mg)Si6O17 Pcca 2/m 2/m 2/m Semenovite (Na,Ca)9(Ce,La)2(Fe,Mn)(Si,Be)20(O,OH,F)48 Pmmn 2/m 2/m 2/m Ferronordite-(Ce)! Na3SrCeFeSi6O17 Pcca 2/m 2/m 2/m Manganonordite-(Ce)! Na3SrCeMnSi6O17 Pcca 2/m 2/m 2/m Ferronordite-(La)! Na3Sr(La,Ce)FeSi6O17 Pcca 2/m 2/m 2/m 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 Manganonordite-(Ce) Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Eur. J. Min.,Vol.10,1998) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Manganonordite-(Ce) :
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

Search for Manganonordite-(Ce) using:

Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Manganonordite-(Ce) :

Ask about Manganonordite-(Ce) here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

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


Dana No: Strunz No: 09.DO.15





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.