Normandite Mineral Data (original) (raw)

General Normandite Information

Help on Chemical Formula: Chemical Formula:

NaCa(Mn++,Fe++)(Ti,Nb,Zr)Si2O7(O,F)2

Help on Composition: Composition:

Molecular Weight = 385.62 gm

Sodium 5.96 % Na 8.04 % Na2O

Calcium 10.39 % Ca 14.54 % CaO

Zirconium 2.37 % Zr 3.20 % ZrO2

Titanium 7.45 % Ti 12.43 % TiO2

Manganese 10.68 % Mn 13.80 % MnO

Niobium 7.23 % Nb 10.34 % Nb2O5

Iron 3.62 % Fe 4.66 % FeO

Silicon 14.57 % Si 31.16 % SiO2

Oxygen 35.27 % O

Fluorine 2.46 % F 2.46 % F

- % F -1.04 % -O=F2

______ ______

100.00 % 99.59 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

NaCaMn2+0.75Fe2+0.25Ti0.6Nb0.3Zr0.1(Si2O7)O1.5F0.5

Help on Environment: Environment:

In miarolitic cavities in nepheline syenite.

Help on IMA Status: IMA Status:

Approved IMA 1997 (Dana # Added)

Help on Locality: Locality:

The Prudrette Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

For Mr. Charles Normand (1963-), of Montreal, who discovered the mineral.

Help on Name Pronunciation: Name Pronunciation:

Normandite + Pronunciation Say NORMANDITE

Help on Synonym: Synonym:

ICSD 89860

IMA1990-021

PDF 51-1537

Normandite Image

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

Normandite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =1.106:1:0.7205

Help on Cell Dimensions: Cell Dimensions:

a = 10.828, b = 9.79, c = 7.054, Z = 4; beta = 108.2° V = 710.36 Den(Calc)= 3.61

Help on Crystal System: Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.859(1), 2.807(0.7), 3.234(0.3),

Click Here for Large Normandite Structure Window Crystal Structure:

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| | Perchiazzi N , McDonald A M , Gault R A , Johnsen O , Merlino S , The Canadian Mineralogist , 38 (2000) p.641-648, The crystal structure of normandite and its crystal-chemical, relationships with lavenite, Locality: Amdrup Fjord View Additional jPOWD Structure files for Normandite [1] | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Normandite

Help on Cleavage: Cleavage:

{100} Distinct, {001} Distinct

Help on Color: Color:

Yellow, Orange brown, Orange.

Help on Density: Density:

3.48 - 3.5, Average = 3.49

Help on Diaphaneity: Diaphaneity:

Transparent to translucent

Help on Fracture: Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Help on Habit: Habit:

Acicular - Occurs as needle-like crystals.

Help on Habit: Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Help on Habit: Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Help on Hardness: Hardness:

5-6 - Between Apatite and Orthoclase

Help on Luminescence: Luminescence:

Non-fluorescent.

Help on Luster: Luster:

Vitreous - Adamantine

Help on Streak: Streak:

pale yellowish white

Optical Properties of Normandite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.033 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.066 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2159,KPDmeas= 0.2233,KC= 0.231
Ncalc = 1.8 - 1.83

Help on Optical Data: Optical Data:

Biaxial (-), a=1.743, b=1.785, g=1.81, bire=0.0670, 2V(Calc)=72, 2V(Meas)=72 -84. Dispersion r > v moderate.

Help on Pleochroism (x): Pleochroism (x):

pale yellow.

Help on Pleochroism (y): Pleochroism (y):

yellow.

Help on Pleochroism (z): Pleochroism (z):

brownish red or deep red.

Calculated Properties of Normandite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.37 gm/cc
note: Specific Gravity of Normandite =3.49 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PENormandite = 20.77 barns/electron
U=PENormandite x rElectron Density= 70.01 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Normandite is Not Radioactive

Normandite Classification

Help on Dana Class: Dana Class:

56.02.06a.02 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O

(56.02)with cations in [4] and/or >[4] coordination

(56.02.06a)Seidozerite - Lamprophyllite group

56.02.06a.01 Seidozerite (Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2 P 2/c 2/m

56.02.06a.02 Normandite! NaCa(Mn,Fe)(Ti,Nb,Zr)Si2O7(O,F)2 P 21/a 2/m

56.02.06a.03 Grenmarite! (Zr,Mn)2(Zr,Ti)(Mn,Na)(Na,Ca)4(Si2O7)2(O,F)4 P 2/c 2/m

Help on Strunz Class: Strunz Class:

09.BE.17 09 - SILICATES (Germanates)

09.B - Sorosilicates

09.BE -Si2O7 groups with additional anions;

09.BE.17 Baghdadite Ca3(Zr,Ti)Si2O9 P 21/a 2/m

09.BE.17 Janhaugite (Na,Ca)3(Mn,Fe)3(Ti,Zr,Nb)2Si4O15(OH,F,O)3 P 21/n 2/m

09.BE.17 Burpalite Na2CaZrSi2O7F2 P 21/a 2/m

09.BE.17 Cuspidine Ca4Si2O7(F,OH)2 P 21/c 2/m

09.BE.17 Hiortdahlite (Ca,Na,Y)3(Zr,Ti)Si2O7(F,O,OH)2 P1 1

09.BE.17 Lavenite (Na,Ca)2(Mn,Fe)(Zr,Ti,Nb)Si2O7(O,OH,F) P 21/a 2/m

09.BE.17 Niocalite Ca14Nb2(Si2O7)4O6F2 Pa m

09.BE.17 Normandite! NaCa(Mn,Fe)(Ti,Nb,Zr)Si2O7(O,F)2 P 21/a 2/m

09.BE.17 Wohlerite NaCa2(Zr,Nb)Si2O7(O,OH,F)2 P 21/m 2/m

09.BE.17 Marianoite! Na2Ca4(Nb,Zr)2(Si2O7)2(O,F)4 P 21 2/m

Other Normandite Information

Help on References: References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.83,p655,1998) OPTIC PROP.(MinRec)

Help on See Also: See Also:

Links to other databases for Normandite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Normandite Specimen Label here :

Normandite

NaCa(Mn++,Fe++)(Ti,Nb,Zr)Si2O7(O,F)2
Dana No: 56.02.06a.02 Strunz No: 09.BE.17
Locality:

Notes: