Bobkingite Mineral Data

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


General Bobkingite Information

Help on Chemical Formula: Chemical Formula: Cu5Cl2(OH)8(H2O)2
Help on Composition: Composition: Molecular Weight = 560.72 gm
   Copper    56.66 %  Cu   70.93 % CuO
   Hydrogen   2.16 %  H    19.28 % H2O
   Chlorine  12.65 %  Cl   12.65 % Cl
               -   %   Cl   -2.85 % -O=Cl2   
   Oxygen    28.53 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu5Cl2(OH)8•2(H2O)
Help on Environment: Environment: Occurs on crusts of malachite and azurite that overlie massive cuprite in oxidized waste material consisting of quarried diorite with copper inclusions. Similar to atacamite; struct ure
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: New Cliffe Hill Quarry, Stanton-under-Bardon, Leicestershire, England. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Robert King, formerly of the Department of Geology, Leicester University, prominent mineral collector and founding member of the Russell Society.
Help on Synonym: Synonym: IMA2000-029
 

Search for Bobkingite Images

Click Here To Search Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.
  

Bobkingite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.5242:1:1.3073
Help on Cell Dimensions: Cell Dimensions: a = 10.301, b = 6.758, c = 8.835, Z = 2; beta = 111.53° V = 572.13 Den(Calc)= 3.25
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.502(1)(110), 8.199(1)(001), 2.883(0.8)(310),2.188(0.5)(232), 1.767(0.4), 2.263(0.4), 2.693(0.4), 5.03(0.4),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: ( 1 1 0) ( 1 0 0) ( 0 0 1)

Warning: this large pop-up is very compute intensive and may not work well with some computers.
 

Physical Properties of Bobkingite

Help on Cleavage: Cleavage: {001} Perfect, {100} Fair
Help on Color: Color: Pale blue.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: pale blue
 

Optical Properties of Bobkingite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2276,KC= 0.2261
Ncalc = 1.73
Help on Optical Data: Optical Data: Biaxial (-), a=1.724, b=1.745, g=1.75, bire=0.0260
 

Calculated Properties of Bobkingite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.14 gm/cc
note: Specific Gravity of Bobkingite =3.25 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001401961
Boson Index = 0.9998598039
Help on Photoelectric: Photoelectric: PEBobkingite = 25.58 barns/electron
U=PEBobkingite x rElectron Density= 80.35 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bobkingite is Not Radioactive
 

Bobkingite Classification
Help on Dana Class: Dana Class: 10.05.08.02 (10)Oxyhalides and Hydroxyhalides
  (10.05)where Am (O,OH)p Xq
  (10.05.08)Dana Group
 
10.05.08.01 Simonkolleite Zn5(OH)8Cl2•(H2O) R 3m 3 2/m
 
10.05.08.02 Bobkingite! Cu5Cl2(OH)8(H2O)2 C 2/m 2/m
Help on Strunz Class: Strunz Class: 03.DA.50 03 - HALIDES
  03.D - Oxyhalides, Hydroxyhalides and Related Double Halides
  03.DA -With Cu, etc., without Pb
 
03.DA.50 Bobkingite! Cu5Cl2(OH)8(H2O)2 C 2/m 2/m
 

Other Bobkingite Information
Help on References: References: NAME( AmMin, Vol 88, p 251) PHYS. PROP.(AmMin, Vol 88, p 251) OPTIC PROP.(AmMin, Vol 88, p 251)
Help on See Also: See Also: Links to other databases for Bobkingite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Bobkingite using:

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

Visit our Advertisers for Bobkingite :

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

Ask about Bobkingite 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 Bobkingite Specimen Label here :

Bobkingite

Cu5Cl2(OH)8(H2O)2
Dana No: 10.05.08.02 Strunz No: 03.DA.50
Locality:

 

Notes: