Vuonnemite Mineral Data

General Vuonnemite Information

Chemical Formula:

Na11Nb2TiSi4O12(PO4)2O5F2

Composition:

Molecular Weight = 1,098.85 gm

Sodium 23.01 % Na 31.02 % Na₂O

Titanium 4.36 % Ti 7.27 % TiO₂

Niobium 16.91 % Nb 24.19 % Nb₂O₅

Silicon 10.22 % Si 21.87 % SiO₂

Phosphorus 5.64 % P 12.92 % P₂O₅

Oxygen 36.40 % O

Fluorine 3.46 % F 3.46 % F

- % F -1.46 % -O=F₂

______ ______

100.00 % 99.27 % = TOTAL OXIDE

Empirical Formula:

Na₁₁Nb₂TiSi₄O₁₇(PO₄)₂F₂

Environment:

Albitized alkalic rocks.

IMA Status:

Approved IMA 1973

Locality:

Vuonnemi River, Khibiny massif, Kola Peninsula, Russia. Ilímaussaq, Greenland. Link to MinDat.org Location Data.

Name Origin:

Named after its locality.

Name Pronunciation:

Vuonnemite + Pronunciation

Synonym:

ICSD 76910

PDF 26-972

Vuonnemite Image

Images:

Vuonnemite Ussingite

Comments: Massive, violet colored ussingite with a single bladed partial crystal of white vuonnemite 1.5 cm in length.
Location: Mt. Karnasurf, Lovozero, Russia. Scale: 4.2 x 3 cm.
© John Veevaert

Images:

Vuonnemite Lorenzenite

Comments: Square vuonnemite crystal with brown, lorenzenite crystals in syenite rock.
Location: Ilimaussaq, Greenland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Vuonnemite Crystallography

Axial Ratios:

a:b:c =0.7679:1:2.0175

Cell Dimensions:

a = 5.5, b = 7.162, c = 14.45, Z = 1; alpha = 92.63°, beta = 95.33°, gamma = 90.6° V = 566.11 Den(Calc)= 3.22

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.7681(1), 2.8728(1), 4.251(1),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Ercit T S , Cooper M A , Hawthorne F C , The Canadian Mineralogist , 36 (1998) p.1311-1320, The crystal structure of vuonnemite, Na11TiNb2(Si2O7)2(PO4)2O3(F,OH),, a phosphate-bearing sorosilicate of the lomonosovite group, Locality: Ilimaussaq, Greenland

View Additional jPOWD Structure files for Vuonnemite
[1]

Physical Properties of Vuonnemite

Cleavage:

{001} Perfect, {???} Very Good, {???} Very Good

Color:

Light yellow, Lemon yellow, Greenish yellow.

Density:

3.13

Fracture:

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

Habit:

Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

2-3 - Gypsum-Calcite

Luminescence:

Fluorescent, Short UV=greenish yellow, Long UV=pale greenish yellow.

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Vuonnemite

Gladstone-Dale:

CI meas= 0.058 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.085 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2042,KPDmeas= 0.2101,KC= 0.2231
Ncalc = 1.7 - 1.72

Optical Data:

Biaxial (+), a=1.636-1.639, b=1.651-1.656, g=1.68-1.683, bire=0.0440

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Vuonnemite

Electron Density:

Bulk Density (Electron Density)=3.01 gm/cc
note: Specific Gravity of Vuonnemite =3.13 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Vuonnemite= 26.61 barns/electron
U=PE_Vuonnemite x rElectron Density= 80.19 barns/cc.

Radioactivity:

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

Vuonnemite Classification

Dana Class:

56.04.03.01 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O

(56.04)with [Si2O7] with phosphate, water

(56.04.03)Dana Group

56.04.03.01 Vuonnemite Na11Nb2TiSi4O12(PO4)2O5F2 P1 1

Strunz Class:

09.BE.35 09 - SILICATES (Germanates)

09.B - Sorosilicates

09.BE -Si2O7 groups with additional anions;

09.BE.35 Vuonnemite Na11Nb2TiSi4O12(PO4)2O5F2 P1 1

Other Vuonnemite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Vuonnemite :
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 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST

Search for Vuonnemite using:

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

Visit our Advertisers for Vuonnemite :

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

Ask about Vuonnemite 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 Vuonnemite Specimen Label here :

Vuonnemite

Na11Nb2TiSi4O12(PO4)2O5F2
Dana No: 56.04.03.01 Strunz No: 09.BE.35
Locality:

Notes: