Nordite-(Ce) Mineral Data

[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop

General Nordite-(Ce) Information

Chemical Formula:

(Ce,La,Ca)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17

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

Empirical Formula:

Na_2.8Mn²⁺_0.2Sr_0.5Ca_0.5La_0.3Ce_0.6Zn_0.4Mg_0.3Mn²⁺_0.2Fe²⁺_0.1Si_5.9Fe³⁺_0.2O₁₇

Environment:

Sodalite syenite pegmatite.

IMA Status:

Approved IMA 1958

Locality:

Near the Chinglusuai River and Motchusuai River, Lovozero Massif, Kola Pininuula, Russia. Link to MinDat.org Location Data.

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.

Name Pronunciation:

Nordite-(Ce)

Nordite-(Ce) Image

Images:

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

Axial Ratios:

a:b:c =2.7307:1:3.7307

Cell Dimensions:

a = 14.2, b = 5.2, c = 19.4, Z = 8; V = 1,432.50 Den(Calc)= 7.08

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pcca

Physical Properties of Nordite-(Ce)

Cleavage:

{010} Distinct

Color:

Light brown, Dark brown, Blackish brown.

Density:

6.43 - 6.49, Average = 6.46

Diaphaneity:

Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Fibrous - Crystals made up of fibers.

Habit:

Lamellar - Thin laminae producing a lamellar structure.

Hardness:

5 - Apatite

Luster:

Vitreous - Greasy

Streak:

light brown

Optical Properties of Nordite-(Ce)

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

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)

Electron Density:

Bulk Density (Electron Density)=6.15 gm/cc
note: Specific Gravity of Nordite-(Ce) =6.46 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Nordite-(Ce)= 88.84 barns/electron
U=PE_Nordite-(Ce) x r_electron= 546.55 barns/cc.

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

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

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

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

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 - Google Images
7 - Google Scholar
8 - MinDAT
9 - MinMax(Deutsch)
10 - MinMax(English)
11 - Mineralienatlas (Deutsch)
12 - QUT Mineral Atlas
13 - Ruff.Info

Search for Nordite-(Ce) using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Nordite-(Ce) :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Nordite-(Ce) Mineral Data :

Ask about Nordite-(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 Español

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: