Mineralogy Database

Botallackite Mineral Data

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General Botallackite Information

Help on Chemical  Formula: Chemical Formula: Cu2Cl(OH)3
Help on Composition: Composition: Molecular Weight = 213.57 gm
   Copper    59.51 %  Cu   74.49 % CuO
   Hydrogen   1.42 %  H    12.65 % H2O
   Chlorine  16.60 %  Cl   16.60 % Cl
               -   %   Cl   -3.75 % -O=Cl2   
   Oxygen    22.47 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu2Cl(OH)3
Help on Environment: Environment: In copper-bearing deposits, in areas with high chlorine concentrations or weathered while exposed to seawater; a reaction product of slag immersed in seawater.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1865
Help on Locality: Locality: In the Wheal Cock and West Wheal Owles, the Botallack and Levant mines, St. Just, and a few other places in Cornwall, England. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the occurrence in the Botallack mine, Cornwall, England.
Help on Name Pronunciation: Name Pronunciation: Botallackite + Pronunciation Say BOTALLACKITE
Help on Synonym: Synonym: ICSD 71001
  PDF Aug-88

Botallackite Image

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Comments: Well crystallized (although the crystals are small) botallackite on matrix.
Location: A European classic from the type locality, Botallack mine, St Just, England. Scale: 5 x 4 cm.
© Fabre Minerals

Botallackite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9329:1:0.9193
Help on Cell Dimensions: Cell Dimensions: a = 5.715, b = 6.126, c = 5.632, Z = 2; beta = 93.07° V = 196.89 Den(Calc)= 3.60
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.66(1), 2.4(0.8), 2.57(0.7),

Physical Properties of Botallackite

Help on Cleavage: Cleavage: {100} Perfect
Help on Color: Color: Blue green, Green, Light blue green, Light green.
Help on Density: Density: 3.6
Help on Streak: Streak: light green

Optical Properties of Botallackite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2242,KPDmeas= 0.2242,KC= 0.2221
Ncalc = 1.8
Help on Optical Data: Optical Data: Biaxial (+), a=1.775, b=1.8, g=1.846, bire=0.0710

Calculated Properties of Botallackite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.44 gm/cc
note: Specific Gravity of Botallackite =3.60 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001100017
Boson Index = 0.9998899983
Help on Photoelectric: Photoelectric: PEBotallackite = 27.37 barns/electron
U=PEBotallackite x rElectron Density= 94.12 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Botallackite is Not Radioactive

Botallackite Classification

Help on  Dana Class: Dana Class: (10)Oxyhalides and Hydroxyhalides
  (10.01)where (A)2 (O,OH)3 Xq
  (10.01.03)Dana Group Botallackite Cu2Cl(OH)3 P 21/m 2/m
Help on  Strunz Class: Strunz Class: 03.DA.10b 03 - HALIDES
  03.D - Oxyhalides, Hydroxyhalides and Related Double Halides
  03.DA -With Cu, etc., without Pb
03.DA.10b Botallackite Cu2Cl(OH)3 P 21/m 2/m
03.DA.10b Clinoatacamite! Cu2(OH)3Cl P 21/n 2/m
03.DA.10b Belloite! Cu(OH)Cl P 21/a 2/m

Other Botallackite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Botallackite :
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

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





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