Mineralogy Database

Herbertsmithite Mineral Data

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General Herbertsmithite Information

Help on Chemical  Formula: Chemical Formula: Cu3Zn(OH)6Cl2
Help on Composition: Composition: Molecular Weight = 430.25 gm
   Zinc      14.59 %  Zn   18.16 % ZnO
   Copper    44.75 %  Cu   56.02 % CuO
   Hydrogen   1.39 %  H    12.46 % H2O
   Chlorine  17.14 %  Cl   17.14 % Cl
               -   %   Cl   -3.87 % -O=Cl2   
   Oxygen    22.13 %  O
            ______        ______ 
            100.00 %       99.91 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu3.03Zn0.96(OH)5.95Cl2.08
Help on Environment: Environment: On a white quartzite, (2) In limonite gossan with wulfenite crystalsrosasite. (3) On joint surfaces of metamorphosed dolomitic limestone. Related to paratacamite.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Mina Los Tres Presidentes, Sierra Gorda, Chile (type locality). Also from (2) the Kali Kafi mine, Anarak, Iran and from (3) the Chah Khouni mine, Anarak, Iran Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for G.F. Herbert Smith (1872-1953), of the British Museum (Natural History), who discovered paratacamite.
Help on Synonym: Synonym: IMA2003-041