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| The Cerro Corona Mine in the highest part of the western Cordillera of the Andes Mountains in northern Peru, two kilometers north-west of the village of Hualgayoc in the Department of Cajamarca |
Cerro Corona mine cover an area of 4,379.3 hectares, while the surface rights cover 1,244 hectares. The Cerro Corona Mine is mining methods open-pit situated in the highest part of the western Cordillera of the Andes Mountains in northern Peru, two kilometers north-west of the village of Hualgayoc in the Department of Cajamarca. And this gold mine owned by Gold Fields La Cima S.A. (GFLC) a wholly owned subsidiary of Gold Fields Limited (GFL) which holds 99.53% of the economic interest, from the original 80% to 98.6% in 2012 and in 2013 to 99.53%.
Earlier in the year 2003, Gold Fields, through a subsidiary, signed a definitive agreement with Sociedad Minera Corona S.A. for the purchase of the Cerro Corona deposit and adjoining mining concessions.
The environmental impact assessment in Cerro Corona mine approved on 2 December 2005, and in May 2006 began construction at the mine Cerro Corona. Building of the Las Gordas tailings dam and quarrying for the relevant construction material commenced in 2007.
The mine production in Cerro Corona started in September 2008, when the process plant started to operate. The Project Cerro Corona mine involves the production of gold and copper and It is estimated that the current Mineral Reserve will be depleted in 2023
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| Mineral deposit in Cerro Corona mine Peru Sheeted and stockwork quartz-pyrite-marcasite chalcopyrite, bornite,hematite, magnetite veining |
The Cerro Corona copper-gold deposit is typical of porphyry style mineralisation comprising stock work quartz-pyrite-marcasite-chalcopyrite, bornite, hematite, magnetite veining, hosted by intensely altered intrusive lithologies of diorite to dacitic composition. The deposit is hosted by a sub-vertical, cylindrical shaped diorite porphyry ( 600 m - 700 m in diameter ), emplaced in mid-Cretaceous limestone, marls and siliclastic rocks. Porphyry is a textural term for an igneous rock consisting of large-grained crystals such as feldspar or quartz dispersed in a fine-grained feldspathic matrix or groundmass
Porphyry deposits are formed when a column of rising magma is cooled in two stages. In the first, the magma is cooled slowly deep in the crust, creating the large crystal grains with a diameter of 2 mm or more. In the second and final stage, the magma is cooled rapidly at relatively shallow depth or as it erupts from a volcano, creating small grains that are usually invisible to the unaided eye.
The Cerro Corona copper-gold porphyry is one of fourteen known Tertiary-aged porphyry Cu- Au-Mo deposits and nineteen epithermal Au-Ag deposits located in the Cajamarca Metallogenic Province (CMP) of northern Peru.
There are two well mineralised districts within the CMP. These are the Yanacocha district in the south of the province, which is host to the largest producing gold mine in South America, and the Hualgayoc Mining District in the north which is one of the oldest mining districts in Peru, best known for its past silver production and more recent base metal production.
Within the porphyry, the copper-gold mineralisation is primarily associated with zones of stockwork quartz veining conforming to classic porphyry-type vein definition. The Cerro Corona porphyry is unusual in that it carries a very high gold content in comparison to other copper-gold deposits.
PROCESS OF MINING IN CERRO CORONA MINE
The Cerro Corona Mine in the Gold Fields Limited South America Region operates one open-pit operation and one copper-gold plant at elevations ranging from approximately 3,600 to 4,000 metres above mean sea level
The Cerro Corona mine in peru is mined by conventional surface mining methods. The mining operation is extending from the crest of the original Cerro Corona hill, which peaked at 3,964 mRL, to a final depth at around 3,660 mRL
The early stages of the mining process is the process of drilling and blasting. At this stage mineral rock require drilling and blasting later stage (with a variety of factors powder) utilizing the 200 mm hole to 10 m bench.
Ore mineral and waste rock are crushed at the surface facilities in the area mine later in the shovel and put into trucks, by a combination of a diesel hydraulic face shovel (230 t) and (150 t) dump trucks for the transport of mineral rocks.
Once the capacity truck is full, the dispatch system directs the driver to the processing plant. The various ore types from the mine are stockpiled on the Run of Mine pad. They are fed in appropriate blends by front end loader to the crushing plant.
Porphyry deposits are formed when a column of rising magma is cooled in two stages. In the first, the magma is cooled slowly deep in the crust, creating the large crystal grains with a diameter of 2 mm or more. In the second and final stage, the magma is cooled rapidly at relatively shallow depth or as it erupts from a volcano, creating small grains that are usually invisible to the unaided eye.
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| The Cerro Corona mining area |
There are two well mineralised districts within the CMP. These are the Yanacocha district in the south of the province, which is host to the largest producing gold mine in South America, and the Hualgayoc Mining District in the north which is one of the oldest mining districts in Peru, best known for its past silver production and more recent base metal production.
Within the porphyry, the copper-gold mineralisation is primarily associated with zones of stockwork quartz veining conforming to classic porphyry-type vein definition. The Cerro Corona porphyry is unusual in that it carries a very high gold content in comparison to other copper-gold deposits.
PROCESS OF MINING IN CERRO CORONA MINE
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Activity at the mine site Cerro Corona mine Peru |
The Cerro Corona mine in peru is mined by conventional surface mining methods. The mining operation is extending from the crest of the original Cerro Corona hill, which peaked at 3,964 mRL, to a final depth at around 3,660 mRL
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| Process of drilling and blasting in mine |
Ore mineral and waste rock are crushed at the surface facilities in the area mine later in the shovel and put into trucks, by a combination of a diesel hydraulic face shovel (230 t) and (150 t) dump trucks for the transport of mineral rocks.
Once the capacity truck is full, the dispatch system directs the driver to the processing plant. The various ore types from the mine are stockpiled on the Run of Mine pad. They are fed in appropriate blends by front end loader to the crushing plant.
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| A processing plant at the mine Cerro Corona |
The crushing plant comprises two jaw crushers in parallel. Crushed product is conveyed to a two-stage grinding circuit consisting of a SAG mill and a ball mill, in closed circuit with cyclones for classification.
Of the Ball Mill which have made mineral slurry, then mineral ore processed into a flotation cell stage.The rougher flotation produces a bulk concentrate, which is then reground and sent to the cleaner flotation. The processing plant at Cerro Corona includes the typical equipment for a copper flotation plant, with a design capacity of 6.7Mtpa.
The final concentrate is thickened and filtered before being stockpiled for final shipment by road to the Salaverry port (380km), for shipment to copper smelters in Korea, Germany and Europe.
Of the Ball Mill which have made mineral slurry, then mineral ore processed into a flotation cell stage.The rougher flotation produces a bulk concentrate, which is then reground and sent to the cleaner flotation. The processing plant at Cerro Corona includes the typical equipment for a copper flotation plant, with a design capacity of 6.7Mtpa.
The final concentrate is thickened and filtered before being stockpiled for final shipment by road to the Salaverry port (380km), for shipment to copper smelters in Korea, Germany and Europe.
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