Chemical Formula: PbCr+++2(CO3)2(OH)4·H2O
Help on Composition: Composition: Molecular Weight = 510.01 g
 
Hydrogen 1.11 % H 9.89 % H2O 0.00 %
Carbon 4.95 % C 18.12 % CO2 0.00 %
Oxygen 34.19 % O 0.00 % 0.00 %
Aluminum 2.12 % Al 4.00 % Al2O3 0.00 %
Chromium 15.29 % Cr 22.35 % Cr2O3 0.00 %
Strontium 1.72 % Sr 2.03 % SrO 0.00 %
Lead 40.63 % Pb 43.76 % PbO 0.00 %


100.01 % 100.15 %
 
Help on Empirical Formula: Empirical Formula: PbSr0.1Cr1.5Al0.4(CO3)2.1(OH)3.6·(H2O)
Help on Environment: Environment: Supergene product associated with crocoite and anglesite ores. Cr-analogue of dundasite
Help on Locality: Locality: Red Lead mine in the Zeehan-Dundas region of northwestern Tasmania.. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for amateur mineralogist William Frederick Petterd (1849-1910)
Help on Synonym: Synonym: IMA1999-034