Mineralogy Database

Epidote-(Pb) Mineral Data

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General Epidote-(Pb) Information

Help on Chemical Formula: Chemical Formula: (Ca,Pb,Sr)2(Al,Fe+++)3(SiO4)(Si2O7)O(OH)
Help on Composition: Composition: Molecular Weight = 583.18 gm
   Strontium   3.00 %  Sr    3.55 % SrO
   Calcium     8.25 %  Ca   11.54 % CaO
   Manganese   2.83 %  Mn    2.43 % MnO /  1.35 % Mn2O3
   Aluminum    9.25 %  Al   17.48 % Al2O3
   Iron        8.62 %  Fe   12.32 % Fe2O3
   Silicon    14.45 %  Si   30.91 % SiO2
   Hydrogen    0.17 %  H     1.54 % H2O
   Lead       17.76 %  Pb   19.14 % PbO
   Oxygen     35.67 %  O
             ______        ______ 
             100.00 %      100.27 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.2Pb0.5Sr0.2Mn2+0.2Al2Fe3+0.9Mn3+0.1(SiO4)(Si2O7)O(OH)
Help on Environment: Environment: Metamorphosed zinc deposit.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1899 - Dana # Changed from 58.2.1a.8
Help on Locality: Locality: Franklin, New Jersey Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Elwood P. Hancock (1836-1916), of Berlinton, New Jersey, USA, collector of minerals from Franklin.
Help on Name Pronunciation: Name Pronunciation: Epidote-(Pb) Say EPIDOTE-(PB)
Help on Synonym: Synonym: Handcockite - Renamed to Epidote-(Pb) - Recommended nomenclature of epidote-group minerals, Eur. J. Mineral. 2006, 18, 551-567.