Colombia
Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...
Central Ranges
Central Ranges (code CER) is an Australian bioregion, with an area of 101,640.44 square kilometres (39,244 sq mi) spreading across two states and one territory: South Australia, Western Australia, and the Northern Territory.Andes. La Colosa has estimated inferred resources of of gold, grading at of Au. In 2015, the mine produced of gold.Gold - UPME In 2016, 88.4% of the mining value in Colombia came from coal and gold combined, with nickel following at 9.3%.
Description
La Colosa, covering an area of , is the second major greenfield discovery in Colombia, after
Gramalote
Gramalote is a Colombian municipality and town located in the department
Department may refer to:
* Departmentalization, division of a larger organization into parts with specific responsibility
Government and military
*Department (administra ...
and believed to have a potential of producing between of gold per year for 20 years. La Colosa gold project, started in 2006, is based on low-grade porphyrycopper deposits containing a small amount of gold. Gold grains in the deposit are found both liberated and locked in
sulphide
Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions. Solutions of sulfide salts are corrosive. ''Sulfide'' also refers to chemical compounds la ...
s and
silicate
In chemistry, a silicate is any member of a family of polyatomic anions consisting of silicon and oxygen, usually with the general formula , where . The family includes orthosilicate (), metasilicate (), and pyrosilicate (, ). The name is al ...
s. The gold mineralization in the deposit is attributed to porphyry intrusions into the Paleozoicschists of the
Cajamarca Complex
Cajamarca (), also known by the Quechua name, ''Kashamarka'', is the capital and largest city of the Cajamarca Region as well as an important cultural and commercial center in the northern Andes. It is located in the northern highlands of Peru ...
on the eastern flank of the
Central Ranges
Central Ranges (code CER) is an Australian bioregion, with an area of 101,640.44 square kilometres (39,244 sq mi) spreading across two states and one territory: South Australia, Western Australia, and the Northern Territory.Andes,Arango Mendoza, 2014, p.72 around 8 Ma. Gold mineralization is believed to have occurred over three early phases of intrusion, which are accompanied by a series of potassic and sodic-calcic alteration events and a late phase of dacite porphyry intrusions.
Project Suspension
Despite the multiple investments made by the Multinational AngloGold Ashanti in favor of the community, including building sports fields among other infrastructures that local governments never developed; the community promoted a popular consultation in order to balance the general opinion of the community, regarding whether or not to give their consent for the development of the project. This, to the extent that beyond the economic advantages mentioned by the Multinational, there were deep disagreements highlighted by various environmentalists, led by citizen Renzo García, the carnival marcha creator, who stated that in their opinion, the generation of environmental liabilities, the contamination and the destruction of the territory would not have any equivalent in the presumed advantages used by the company. In this regard, AngloGold pointed out that the project was an opportunity to strengthen the productive industries of the region. However, beyond both positions, the community finally rejected the project by voting in a popular consultation, a tool available to date in the Colombian legal system. To date it is estimated that the project could be reactivated, to which environmentalists such as Renzo García maintain opposition.
Quinchía mine
The Quinchía mine is a gold mine in Colombia. The mine is located in Quinchía, Risaralda. The mine has estimated reserves of of gold and of silver. In 2016, Quinchía produced of gold,Cerro Matoso mine