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Lake Yanacocha

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Journal Article
Journal: Economic Geology
Published: 01 November 2010
Economic Geology (2010) 105 (7): 1191-1241.
... rocks in the district, and includes intrusions and flow domes of dacite to rhyolite at Corimayo (10.8 Ma), Cerro Yanacocha (9.9 Ma), and Yanacocha Lake (8.4 Ma). Most of the gold (>47 Moz) was deposited at Yanacocha during intrusion of the late Coriwachay Dacite. These late dacites are volumetrically...
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Composite chronostratigraphic summary that shows the spatial distribution a...
Published: 01 November 2010
dacite (Tcd), Yanacocha dacitic porphyry plugs and diatreme (Typq), and Yanacocha Lake rhyolitic domes and dikes (Tcyr). Site locations include the following: R = Cerro Regalado, CN = Cerro Negro, CO = Combayo, CT = Corimayo-Tapado, M = Maqui Maqui, Q – Quilish, SCC = San Jose–Carachugo-Chaquicocha, Y
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District plan map model summarizing the temporal and spatial evolution of t...
Published: 01 November 2010
and other dacites; F) Coriwachay Dacite-phase 2, including the Yanacocha dacite porphyry and Yanacocha Lake rhyolitic dikes associated with late diatremes and the bulk of the gold ores.
Series: Geological Society, London, Engineering Geology Special Publications
Published: 01 January 2005
DOI: 10.5382/SP.11.16
EISBN: 9781629490359
... Abstract With premining reserves plus resources of 10.2 million oz (Moz) of gold, 424 million metric tons (Mt) at 0.75 g/t, La Quinua is one of several world-class gold deposits that comprise the Yanacocha mining district in the Cajamarca province, northern Peru. Unlike volcanic-hosted high...
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A: Detrended tropical North Atlantic Ocean temperatures ( Rühlemann et al.,...
in > Geology
Published: 01 August 2015
ocean water. C: Pumacocha lake sediment stable isotope record ( Bird et al., 2011 ).VPDB—Vienna Peedee belemnite. D, E: Sediment core data from Yanacocha with periods of overall ice advance represented by higher values of principal component 1 (PC1) of the sediment geochemistry data and clastic sediment
Journal Article
Journal: Geology
Published: 01 August 2015
Geology (2015) 43 (8): 747-750.
... ocean water. C: Pumacocha lake sediment stable isotope record ( Bird et al., 2011 ).VPDB—Vienna Peedee belemnite. D, E: Sediment core data from Yanacocha with periods of overall ice advance represented by higher values of principal component 1 (PC1) of the sediment geochemistry data and clastic sediment...
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Journal Article
Journal: Elements
Published: 01 October 2009
Elements (2009) 5 (5): 289-295.
..., such as crater lakes in degassing volcanoes. Fluid-rock reactions leach cations, neutralize the acidic fluid and lead to the precipitation of alunite, pyrophyllite, dickite, quartz, anhydrite, diaspore, topaz, kaolinite and illite, which is an assemblage characteristic of fluid-dominated conditions and advanced...
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Journal Article
Published: 01 October 2001
Exploration and Mining Geology (2001) 10 (4): 313-320.
.... Top world gold mines in 2000* Mine Country Owner Production** *in thousands troy ounces. **production x 1000 oz. Source: Gold Fields Mineral Services Ltd. 1 Grasberg Indonesia Freeport-McMoRan C&G (86%) 2363 2 Yanacocha Peru Newmont Mining (51...
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Series: Reviews in Economic Geology
Published: 01 January 2000
DOI: 10.5382/Rev.13.07
EISBN: 9781629490205
... or philosophy. For example, the economic-related characteristics of some disseminated high-sulfidation deposits (e.g., Yanacocha, Perú and Pascua-Lama, Chile-Argentina) and low-sulfidation deposits (Round Mountain, Nevada) suit large, relatively low capital-cost open-pit operations. Conversely, structurally...
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Journal Article
Journal: Economic Geology
Published: 01 June 2008
Economic Geology (2008) 103 (4): 663-687.
... questions as well as being critical to the planning of potentially successful greenfield exploration programs. Cross-arc zones of Miocene tectonomagmatic activity, up to several tens of kilometers wide, appear to have localized the Alto Chicama and Yanacocha high-sulfidation gold deposits in the Cajamarca...
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Journal Article
Published: 01 April 2009
The Canadian Mineralogist (2009) 47 (2): 441-456.
.... In the large Peruvian Yanacocha gold deposit, pyrophyllite is associated with alunite and kaolinite ( Simmons et al. 2005 ). Chouichiat could thus represent a metamorphosed Proterozoic epithermal system. The pyrophyllite-rich core could correspond to a paleochannel for hydrothermal fluids, where alteration...
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Journal Article
Journal: Economic Geology
Published: 01 August 2009
Economic Geology (2009) 104 (5): 623-633.
... not capture the fact that most gold in the epithermal population is in a relatively few large deposits (Fig. 3B ). About 5 percent of all epithermal gold is in one deposit (Yanacocha), 25 percent is in the seven largest deposits, and 50 percent is in the 32 largest deposits. The arithmetic mean gold content...
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Series: Geological Society, London, Engineering Geology Special Publications
Published: 01 January 2005
DOI: 10.5382/SP.11.01
EISBN: 9781629490359
..., Chile), silver (Potosí, Bolivia), and tin (Llallagua, Bolivia) deposits and the third largest gold deposit (Yanacocha, Peru)— have been a favorite exploration venue for the last 20 yrs and currently (2003) lead the world in total exploration expenditure (roughly 25%; Chender, 2004 ). Nevertheless...
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Journal Article
Journal: Economic Geology
Published: 01 January 2010
Economic Geology (2010) 105 (1): 3-41.
... of the magmatic aqueous phase (e.g., Bingham and Yanacocha; Deino and Keith, 1997 ; Longo and Teal, 2005 ). When planning exploration programs for porphyry Cu ± Mo ± Au, skarn Cu ± Au, or high-sulfidation epithermal Au deposits, the preeminent ore types hosted by porphyry Cu systems, the choice is between...
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Journal Article
Journal: Economic Geology
Published: 01 November 2013
Economic Geology (2013) 108 (7): 1523-1540.
...., Yanacocha). The redox state of magmatic-hydrothermal vapors is controlled by the sulfur-gas buffer at temperatures >350°C ( Giggenbach, 1987 ; Einaudi et al., 2003 ; Zelensky and Taran, 2011 ), but compositions are more reduced and H 2 S dominant at lower temperatures ( Fig. 2 ). Condensation...
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Series: Economic Geology
Published: 01 January 2005
DOI: 10.5382/AV100.16
EISBN: 9781934969519
...; Te = Temora; Ya = Yanacocha. A second type of epithermal mineralization is distinguished by its close association with quartz + alunite ± pyrophyllite ± dickite ± kaolinite alteration that forms from hypogene acidic fluids in extinct magmatic hydrothermal systems...
Journal Article
Journal: Economic Geology
Published: 01 May 2000
Economic Geology (2000) 95 (3): 645-654.
...) as a phreatomagmatic explosion breccia; this is overlain by the Caracoles Formation, which they interpreted as a tuff ring with associated ephemeral lake deposits ( Cunningham et al., 1996 ). The tuff ring portion of the Caracoles Formation occurs on the eastern and northeastern sides of Cerro Rico; the ephemeral lake...
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Journal Article
Journal: Economic Geology
Published: 01 March 2017
Economic Geology (2017) 112 (2): 221-244.
... at Yanacocha, based on anhydrite solubility. Magmatic anhydrite has also been reported from the “porphyry A” stock at El Teniente ( Stern et al., 2007) and from a granodiorite porphyry associated with the Qulong porphyry Cu-Mo deposit in Tibet ( Xiao et al., 2012) . The mineralization potential of magmas may...
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Journal Article
Journal: Economic Geology
Published: 01 November 2017
Economic Geology (2017) 112 (7): 1653-1672.
... compared to the longer time scale of associated magmatism. At both Yanacocha, Peru, and El Teniente, Chile, for example, short duration ore-forming fluid flow events of <100,000 years are separated by gaps of 0.3 to 1 m.y. over a total period of magmatic activity of 2 to 6 m.y. ( Longo et al., 2010...
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Journal Article
Journal: Economic Geology
Published: 01 January 2018
Economic Geology (2018) 113 (1): 163-192.
... , the breccia complexes at Tumpangpitu and Tanjung Jahe display similarities to ancient and modern-day diatreme breccias and maars produced by multiple explosive eruptions that cut deeply into the country rock (e.g., the Costa Giardini diatreme, southern Sicily: Calvari and Tanner, 2010 ; Lake Taal...
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