Chemical Formula: Pb9As4S15
Help on Composition: Composition: Molecular Weight = 2645.48 g
 
Sulfur 18.18 % S 0.00 % 0.00 %
Arsenic 11.33 % As 0.00 % 0.00 %
Lead 70.49 % Pb 0.00 % 0.00 %

100.00 %
 
Help on Empirical Formula: Empirical Formula: Pb9As4S15
Help on Environment: Environment: In vugs in hydrothermal copper ores
Help on Locality: Locality: In the Excelsior mine, Cerro de Pasco, Peru, in large crystals.. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Louis Carly Graton (1880-1970), Professor of Economic Geology, Harvard University, Cambridge, Massachusetts, USA
Help on Synonym: Synonym: