Natrodufrenite Mineral Data (original) (raw)

General Natrodufrenite Information

Help on Chemical Formula: Chemical Formula:

Na(Fe+++,Fe++)(Fe+++,Al)5(PO4)4(OH)6•2(H2O)

Help on Composition: Composition:

Molecular Weight = 786.50 gm

Sodium 1.75 % Na 2.36 % Na2O

Aluminum 3.09 % Al 5.83 % Al2O3

Iron 34.44 % Fe 0.46 % FeO / 48.73 % Fe2O3

Phosphorus 14.97 % P 34.29 % P2O5

Hydrogen 1.20 % H 10.77 % H2O

Oxygen 44.55 % O

______ ______

100.00 % 102.44 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Na0.6Fe3+0.7Fe2+0.05Fe3+4.1Al0.9(PO4)3.8(OH)4(H2O)2.7

Help on Environment: Environment:

Low-temperature secondary mineral.

Help on IMA Status: IMA Status:

Approved IMA 1982

Help on Locality: Locality:

Rochefort-en-Terre, Morbihan, France. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the essential sodium, (NATRium) and its relationship to dufrenite.

Help on Name Pronunciation: Name Pronunciation:

Natrodufrenite + Pronunciation Say NATRODUFRENITE

Natrodufrenite Image

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

Click Here for Larger Natrodufrenite Image Natrodufrenite Comments: Greenish gray, botryoidal aggregates natrodufrenite on hematite-stained quartz. Location: Greifenstein Rocks, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany.Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag

Natrodufrenite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =5.0155:1:2.6644

Help on Cell Dimensions: Cell Dimensions:

a = 25.83, b = 5.15, c = 13.722, Z = 4; beta = 111.533° V = 1,697.96 Den(Calc)= 3.08

Help on Crystal System: Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.152(1), 3.4(0.8), 12.04(0.8),

Physical Properties of Natrodufrenite

Help on Color: Color:

Light blue green.

Help on Density: Density:

3.23

Help on Diaphaneity: Diaphaneity:

Translucent

Help on Fracture: Fracture:

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

Help on Habit: Habit:

Fibrous - Crystals made up of fibers.

Help on Habit: Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Help on Habit: Habit:

Spherical - Spherical, rounded aggregates.

Help on Hardness: Hardness:

3.5-4.5 - Between Copper Penny and Fluorite-Apatite

Help on Luster: Luster:

Silky

Help on Streak: Streak:

green

Optical Properties of Natrodufrenite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.123 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.08 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2485,KPDmeas= 0.237,KC= 0.2703
Ncalc = 1.83 - 1.87

Help on Optical Data: Optical Data:

Biaxial (?), a=1.756, g=1.775, bire=0.0190

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

pale yellow.

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

dark green.

Calculated Properties of Natrodufrenite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.02 gm/cc
note: Specific Gravity of Natrodufrenite =3.08 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0075166155
Boson Index = 0.9924833845

Help on Photoelectric: Photoelectric:

PENatrodufrenite = 11.07 barns/electron
U=PENatrodufrenite x rElectron Density= 33.48 barns/cc.

Help on Radioactivity: Radioactivity:

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

Natrodufrenite Classification

Help on Dana Class: Dana Class:

42.09.01.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.09)where (A)3 (XO4)2 Zq � x(H2O)

(42.09.01)Burangaite Group

42.09.01.01 Burangaite (Na,Ca)2(Fe,Mg)2Al10(PO4)8(OH,O)12•4(H2O) C 2/c 2/m

42.09.01.02 Dufrenite FeFe4(PO4)3(OH)5•2(H2O) C 2/c 2/m

42.09.01.03 Natrodufrenite Na(Fe,Fe)(Fe,Al)5(PO4)4(OH)6•2(H2O) C 2/c 2/m

42.09.01.04 IMA2008-056! NaMnFe5(PO4)4(OH)6•2H2O C 2/c 2/m

42.09.01.05 Matioliite! NaMgAl5(PO4)4(OH)6•2H2O C 2/c 2/m

Help on Strunz Class: Strunz Class:

08.DK.15 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DK -With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1

08.DK.15 Dufrenite FeFe4(PO4)3(OH)5•2(H2O) C 2/c 2/m

08.DK.15 Burangaite (Na,Ca)2(Fe,Mg)2Al10(PO4)8(OH,O)12•4(H2O) C 2/c 2/m

08.DK.15 Natrodufrenite Na(Fe,Fe)(Fe,Al)5(PO4)4(OH)6•2(H2O) C 2/c 2/m

08.DK.15 Matioliite! NaMgAl5(PO4)4(OH)6•2H2O C 2/c 2/m

08.DK.15 IMA2008-056! NaMnFe5(PO4)4(OH)6•2H2O C 2/c 2/m

Other Natrodufrenite Information

Help on References: References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic4)

Help on See Also: See Also:

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

Search for Natrodufrenite using:

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

Visit our Advertisers for Natrodufrenite :

A Bijoux Google Search for Natrodufrenite
Adam's Minerals Google Search for Natrodufrenite
Cape Minerals Google Search for Natrodufrenite
Dakota Matrix Minerals Google Search for Natrodufrenite
Excalibur Mineral Corp. Google Search for Natrodufrenite
Exceptional Minerals Google Search for Natrodufrenite
John Betts Fine Minerals Search for Natrodufrenite
McDougall Minerals Google Search for Natrodufrenite
Mineral News Website Link
Rock and Mineral Shows Google Search for Natrodufrenite
Weinrich Minerals, Inc. Google Search for Natrodufrenite

Ask about Natrodufrenite 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 Espa�ol

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

Natrodufrenite

Na(Fe+++,Fe++)(Fe+++,Al)5(PO4)4(OH)6•2(H2O)
Dana No: 42.09.01.03 Strunz No: 08.DK.15
Locality:

Notes: