Archive for the ‘Volcanic centers’ Category
The history of how the amount of gold production in Peru
As the country’s leading producer of silver in the world production of copper amounted to 154.317 tons (4.961 million ounces), while copper was 22 million tons 751.635, from the Republican era. This information was first provided by the Metallogenic Map of Gold in Peru 2010, has been prepared by the Geological Mining and Metallurgical Institute (Ingemmet), decentralized public entity of the MEM.
Formed the team that was responsible for the development of the Memory of the outstanding geologists that map: Jorge Acosta, Jorge Quispe, Raymond Rivera, Michael Valencia, Humberto Chirif, Dina Huanacuni, Italo Rodriguez Villarreal Eder, Deysi Paico and Alexander Santisteban.
They say that more or less detailed knowledge of the historical production of these metals is very useful to determine how it is distributed on the fringes metallogenetic.
Thus, it may offer new and valuable insights to guide investment to large mining projects, said the MEM. In the case of gold, metallogenetic map authors could establish that the increased production comes from the band called XXI, Miocene, where they have won more than 1,400 tons (45 million ounces).
This band is widely distributed in the domain of the Cenozoic volcanic Cordillera Occidental. In the north, is controlled by faults that are changing from NW-SE to WNW-ESE to approximate the Cajamarca deflection, then switch to NS approaching the deflection Huancabamba.
Among the deposits are hosted in volcanic rocks, are Quiruvilca, Pierina, Tamboraque and Santa Rita. Farther north are deposits of Yanacocha, Tantahuatay and ditch. Some deposits are associated with volcanic centers, as is the case of Alto Chicama, Quiruvilca, Alto Dorado, Matala, Macon, High Cross, Ticas.
The other part of the precious metal production comes from the bands I and II of the Paleozoic (Cordillera Oriental and Pataz Batholith – Buldibuyo, respectively) and the IX All-Cretaceous (Nazca-Ocoña: batholith of the Coast), according researchers have produced over 1,200 tons of gold (more than 38 million ounces).
Like gold, silver production increased in the Gaza XXI, but is also present in the strip XX Miocene, where both exceed 110 000 tons (3.500 million ounces). Another part of the production is taken from the Strip XVII of Eocene-Miocene, which, they say, has produced about 30,000 tons (1.000 million ounces).
On the production of copper say that mostly it comes from the XIII All the Paleocene-Eocene, represented by Toquepala, Cuajone, Cerro Verde, exceeding 13 million tons. All XX Miocene, where the Antamina deposit has produced over three million tons. Another six million tonnes of metal have been on the fringes II, XV and XXI where the Cobriza mines, and Cerro de Pasco Tintaya, respectively.