Botallackite Mineral Data + Say BOTALLACKITE

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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 Synonym: Synonym: ICSD 71001
  PDF Aug-88
 

Botallackite Image

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Botallackite

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 - PrismaticH-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),
Click Here for Large Botallackite Structure Window Crystal Structure:

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Hawthorne F C , Mineralogical Magazine , 49 (1985) p.87-89, Refinement of the crystal structure of botallackite, Locality: Botallack mine, Cornwall, England

 

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
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:

relectron=3.44 gm/cc
note: rBotallackite =3.60 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00011
Boson Index = 0.99989
Help on Photoelectric: Photoelectric:

PEBotallackite = 27.37 barns/electron
U=PEBotallackite x relectron= 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: 10.1.3.1 (10)Oxyhalides and Hydroxyhalides
  (10.1)where (A)2 (O,OH)3 Xq
  (10.1.3)Dana Group
 
10.1.3.1 Botallackite Cu2Cl(OH)3 P 21/m 2/m
Help on  Strunz Class: Strunz Class: III/D.01-50 III - Halogenides
  III/D - Oxi-halogenides with Mg - Mn - Cu - Zn - Sn
  III/D.01 - Atacamite series, Korshunovskite - Anthonyite
 
III/D.01-10 Korshunovskite Mg2Cl(OH)3·3.5-4(H2O) P1 or P1 Tri
 
III/D.01-12 Nepskoeite! Mg4Cl(OH)7·6(H2O) Pcmm,Pcm2,Pc2m Ortho
 
III/D.01-15 Hibbingite (Fe,Mg)2(OH)3Cl Pnam 2/m 2/m 2/m
 
III/D.01-20 Kempite Mn2Cl(OH)3 Pnam 2/m 2/m 2/m
 
III/D.01-25 Belloite! Cu(OH)Cl P 21/a 2/m
 
III/D.01-30 Atacamite Cu2Cl(OH)3 Pmcn 2/m 2/m 2/m
 
III/D.01-40 Clinoatacamite! Cu2(OH)3Cl P 21/n 2/m
 
III/D.01-50 Botallackite Cu2Cl(OH)3 P 21/m 2/m
 
III/D.01-55 Paratacamite (Cu,Zn)2(OH)3Cl R 3 3
 
III/D.01-57 Herbertsmithite! Cu3Zn(OH)6Cl2 R 3m 3 2/m
 
III/D.01-60 Melanothallite Cu2OCl2 F ddd 2/m 2/m 2/m
 
III/D.01-65 Bobkingite! Cu5Cl2(OH)8(H2O)2 C 2/m 2/m
 
III/D.01-70 Calumetite Cu(OH,Cl)2·2(H2O) Unk Ortho
 
III/D.01-80 Anthonyite Cu(OH,Cl)2·3(H2O) Unk. Mono
 

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 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Botallackite

Cu2Cl(OH)3
Dana No: 10.1.3.1 Strunz No: III/D.01-50
Locality:

 

Notes:

 

 
   
 
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