Mineralogy Database

Kapellasite Mineral Data

Search Webmineral :

General Kapellasite Information

Help on Chemical  Formula: Chemical Formula: Cu3Zn(OH)6Cl2
Help on Composition: Composition: Molecular Weight = 428.99 gm
   Zinc      11.43 %  Zn   14.23 % ZnO
   Copper    47.99 %  Cu   60.08 % CuO
   Hydrogen   1.40 %  H    12.47 % H2O
   Chlorine  17.02 %  Cl   17.02 % Cl
               -   %   Cl   -3.84 % -O=Cl2   
   Oxygen    22.15 %  O
            ______        ______ 
            100.00 %       99.96 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu3.24Zn0.75(OH)5.94Cl2.06
Help on Environment: Environment: Metastable polymorph of herbertsmithite.
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Sounion mine #19, Lavrion, Attica, Greece Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Christo Kapellas (1938-2004), collector and mineral dealer from Kamariza, Lavrion, Greece.
Help on Synonym: Synonym: IMA2005-009

Kapellasite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.90999
Help on Cell Dimensions: Cell Dimensions: a = 6.3, c = 5.733, Z = 1; V = 197.06 Den(Calc)= 3.61
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: P 3m1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.73(1), 2.464(0.81), 2.73(0.39),1.976(0.32), 1.576(0.17), 2.761(0.12), 2.865(0.11), 1.519(0.1),

Physical Properties of Kapellasite

Help on Cleavage: Cleavage: {hk0} Good
Help on Color: Color: Bluish green.
Help on Density: Density: 3.55
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: ligth blue-green

Optical Properties of Kapellasite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.022 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2161,KPDmeas= 0.2197,KC= 0.2208
Ncalc = 1.78 - 1.8
Help on Optical Data: Optical Data: Uniaxial (-), e=1.76, w=1.8, bire=0.0400.

Calculated Properties of Kapellasite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.39 gm/cc
note: Specific Gravity of Kapellasite =3.55 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0047956108
Boson Index = 0.9952043892
Help on Photoelectric: Photoelectric: PEKapellasite = 28.04 barns/electron
U=PEKapellasite x rElectron Density= 95.10 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kapellasite is Not Radioactive

Kapellasite Classification

Help on  Dana Class: Dana Class: (10)Oxyhalides and Hydroxyhalides
  (10.01)where (A)2 (O,OH)3 Xq
  (10.01.02)Paratacamite Group Paratacamite (Cu,Zn)2(OH)3Cl R 3 3 Clinoatacamite! Cu2(OH)3Cl P 21/n 2/m Herbertsmithite! Cu3Zn(OH)6Cl2 R 3m 3 2/m Kapellasite! Cu3Zn(OH)6Cl2 P 3m1 3 2/m
Help on  Strunz Class: Strunz Class: 03.DA.10c 03 - HALIDES
  03.D - Oxyhalides, Hydroxyhalides and Related Double Halides
  03.DA -With Cu, etc., without Pb
03.DA.10c Paratacamite (Cu,Zn)2(OH)3Cl R 3 3
03.DA.10c Gillardite! Cu3NiCl2(OH)6 R 3m 3
03.DA.10c Herbertsmithite! Cu3Zn(OH)6Cl2 R 3m 3 2/m
03.DA.10c Kapellasite! Cu3Zn(OH)6Cl2 P 3m1 3 2/m
03.DA.10c Haydeeite! Cu3Mg(OH)6Cl2 R 3m 3

Other Kapellasite Information

Help on References: References: NAME( MinMag, v70:329) PHYS. PROP.(MinMag, v70:329) OPTIC PROP.(MinMag, v70:329)
Help on See Also: See Also: Links to other databases for Kapellasite :
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 Kapellasite using:

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

Visit our Advertisers for Kapellasite :

Ask about Kapellasite 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´┐Żol

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


Dana No: Strunz No: 03.DA.10c





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.