This paper describes the results of a study of gold from placer El Monigote, located in central Argentina in the north-east of the province of San Luis. Gold from this placer deposit has weak roundness, lowpower, high-grade rims and a grade of gold (close to 700 ‰) in the center of the gold particles. This indicates a single gold source which is located in a few kilometers north-west of the placer deposit El Monigote, which is likely related to the volcanic belt.
The paper presents the results of a study of gold from placer deposits of the rivers Marañón, Guayabamba, Chamaya which are located in the north of Peru, Cajamarca Province. There were founded peculiarities of gold, which let make the following conclusion: it was determined that there are a multiple quantity of primary sources of gold placer deposits and it was found the presence of ancient development and extraction of gold, which used the method of amalgamation.
