Namibite Mineral Data

Namibite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About


General Namibite Information

Help on Chemical Formula: Chemical Formula: Cu++Bi2(VO4)O2
Help on Composition: Composition: Molecular Weight = 628.44 gm
   Vanadium   8.11 %  V    14.47 % V2O5
   Copper    10.11 %  Cu   12.66 % CuO
   Bismuth   66.51 %  Bi   74.14 % Bi2O3
   Oxygen    15.28 %  O
            ______        ______ 
            100.00 %      101.27 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CuBi2(VO4)O2
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: Khorixas (formerly Welwitschia), northwestern Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the country in which it is found.
Help on Name Pronunciation: Name Pronunciation: Namibite Say NAMIBITE
Help on Synonym: Synonym: ICSD 89724
  PDF 47-1773
 

Namibite Image

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

Namibite

Comments: Dark green crystals of namibite on matrix.
Location: Pucher Shaft, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Namibite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =3.2099:1:2.0073
Help on Cell Dimensions: Cell Dimensions: a = 11.864, b = 3.696, c = 7.419, Z = 2; beta = 109.7° V = 306.28 Den(Calc)= 6.81
Help on Crystal System: Crystal System: MonoclinicSpace Group: C 2/m,Cm,C 2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.018(1), 3.574(0.75), 5.58(0.7),
Click Here for Large Namibite Structure Window 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


Kolitsch U , Giester G , American Mineralogist , 85 (2000) p.1298-1301, The crystal structure of namibite, Cu(BiO)2VO4(OH), and a revision, of its symmetry

 

Physical Properties of Namibite

Help on Cleavage: Cleavage: {100} Good
Help on Color: Color: Dark green.
Help on Density: Density: 6.86
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 4.5-5 - Near Apatite
Help on Streak: Streak: pistachio green
 

Optical Properties of Namibite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.129 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.123 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1615,KPDmeas= 0.1603,KC= 0.1842
Ncalc = 2.25 - 2.26
Help on Optical Data: Optical Data: Biaxial (-), a=2.1, 2V(Meas)=moderate.
Help on Pleochroism (x): Pleochroism (x): yellow green.
Help on Pleochroism (y): Pleochroism (y): pistachio green.
Help on Pleochroism (z): Pleochroism (z): dark green.
 

Calculated Properties of Namibite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.76 gm/cc
note: Specific Gravity of Namibite =6.81 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0002766353
Boson Index = 0.9997233647
Help on Photoelectric: Photoelectric: PENamibite =1,271.11 barns/electron
U=PENamibite x rElectron Density=7,327.83 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Namibite is Not Radioactive
 

Namibite Classification
Help on Dana Class: Dana Class: 38.05.09.01 (38)Anhydrous Phosphates, etc
  (38.05)with miscellaneous formulae
  (38.05.09)Dana Group
 
38.05.09.01 Namibite CuBi2(VO4)O2 C 2/m,Cm,C 2 Mono
 
38.05.09.02 Urusovite! Cu[AlAsO5] P 21/c 2/m
Help on Strunz Class: Strunz Class: 08.BB.50 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BB -With only medium-sized cations, (OH, etc.):RO4 £ 1:1
 
08.BB.50 Namibite CuBi2(VO4)O2 C 2/m,Cm,C 2 Mono
 

Other Namibite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Namibite :
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 Namibite using:

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

Visit our Advertisers for Namibite :

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

Ask about Namibite 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 Namibite Specimen Label here :

Namibite

Cu++Bi2(VO4)O2
Dana No: 38.05.09.01 Strunz No: 08.BB.50
Locality:

 

Notes: