FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2018272313> ?p ?o ?g. }

• W2018272313 endingPage "71" @default.
• W2018272313 startingPage "39" @default.
• W2018272313 abstract "Porphyry-related base metal vein and replacement mineralization (i.e., Cordilleran polymetallic mineralization) in the Morococha district, central Peru, is part of a large magmatic-hydrothermal system associated with the emplacement of several late Miocene porphyry intrusions and formation of important Cu-Mo mineralization. Zn-Pb-Ag-Cu veins overprint the giant Toromocho porphyry Cu-Mo deposit in the center of the district and display a typical concentric base metal zonation (Cu → Zn, Pb → Ag) covering an area of approximately 50km2.A detailed fluid inclusion study supports the hypothesis that base metal mineralization precipitated from cooled and evolved metal-rich, intermediate-density porphyry-type fluids. In early stages of Cordilleran base metal vein formation, fluid inclusions have low salinities of ~2 to 5 wt % NaCl equiv, CO2 contents of 3 to 10mol %, and homogenization temperatures (Th) of 380° to 340°C. They are similar to intermediate-density fluid inclusions trapped in a milky quartz vein predating Cordilleran polymetallic mineralization, with similar low salinities (3.0–3.8 wt % NaCl equiv) and low CO2 contents (6.5–8 mol %), but higher Th of ~420° to 410°C. During cooling of the intermediate-density fluids from 400° to 300°C, the lithostatic pressure regime changed to a hydrostatic one. The fluids underwent pressure drop as well as phase separation (i.e., unmixing) and lost most of their CO2. They acquired moderate salinities, in some cases intermediate (~up to 16 wt % NaCl) to brine compositions. However, the bulk of the magmatic fluid retained low salinity while it continued to cool under open-system conditions and precipitated tennantite-tetrahedrite, chalcopyrite, enargite, sphalerite, and galena. Upon cooling below 270°C, the fluids deposited abundant rhodochrosite and quartz, while following the boiling curve toward lower P-T conditions. These data record an evolution of mineral precipitation from deep (minimum depth of 2–1.5 km) to shallow environments (300–800 m). Oxygen, hydrogen, and carbon stable isotope data indicate that the hydrothermal fluids have a dominantly magmatic signature and were diluted by meteoric waters during the carbonate stage.Copper (5,000–18,000 μ g/g), sulfur (up to 12,000 μ g/g), and iron (2,100–6,000 μ g/g) concentrations in the intermediate-density fluid inclusions in the milky quartz veins are approximately 5 to 10 times higher than in intermediate-density inclusions of the early Cordilleran base metal veins. The base metals Zn, Pb, and Mn have comparable concentrations between 100 and 1,000 μ g/g for both types of fluid. These findings suggest that the fluids identified in Cordilleran polymetallic veins are compositionally similar to the porphyry-type fluids and could have derived from the latter after precipitation of Cu- and Fe-bearing sulfides in a deeper porphyry environment.The new data explain the commonly observed base and precious metal zonation patterns encountered in porphyry-centered districts (e.g., Bingham, Butte) and show that both porphyry and polymetallic mineralization can precipitate from similar magmatic-hydrothermal fluid pulses." @default.
• W2018272313 created "2016-06-24" @default.
• W2018272313 creator A5000185699 @default.
• W2018272313 creator A5029872460 @default.
• W2018272313 creator A5035972809 @default.
• W2018272313 creator A5067094589 @default.
• W2018272313 creator A5082226154 @default.
• W2018272313 date "2014-11-25" @default.
• W2018272313 modified "2023-10-03" @default.
• W2018272313 title "Zoned Base Metal Mineralization in a Porphyry System: Origin and Evolution of Mineralizing Fluids in the Morococha District, Peru" @default.
• W2018272313 cites W1207354341 @default.
• W2018272313 cites W1430725331 @default.
• W2018272313 cites W1511829535 @default.
• W2018272313 cites W1596166688 @default.
• W2018272313 cites W1603080062 @default.
• W2018272313 cites W1607993723 @default.
• W2018272313 cites W1945611584 @default.
• W2018272313 cites W1966638191 @default.
• W2018272313 cites W1974553500 @default.
• W2018272313 cites W1976076124 @default.
• W2018272313 cites W1981363657 @default.
• W2018272313 cites W1985480593 @default.
• W2018272313 cites W1985930163 @default.
• W2018272313 cites W1989695106 @default.
• W2018272313 cites W1990581568 @default.
• W2018272313 cites W1994663772 @default.
• W2018272313 cites W1997318601 @default.
• W2018272313 cites W1997866625 @default.
• W2018272313 cites W2000886616 @default.
• W2018272313 cites W2008575948 @default.
• W2018272313 cites W2009958649 @default.
• W2018272313 cites W2012556343 @default.
• W2018272313 cites W2013747889 @default.
• W2018272313 cites W2015483607 @default.
• W2018272313 cites W2017353146 @default.
• W2018272313 cites W2017540574 @default.
• W2018272313 cites W2026608718 @default.
• W2018272313 cites W2030023077 @default.
• W2018272313 cites W2030139888 @default.
• W2018272313 cites W2030540147 @default.
• W2018272313 cites W2035130206 @default.
• W2018272313 cites W2038766551 @default.
• W2018272313 cites W2045986371 @default.
• W2018272313 cites W2047389443 @default.
• W2018272313 cites W2050203573 @default.
• W2018272313 cites W2050739689 @default.
• W2018272313 cites W2051517501 @default.
• W2018272313 cites W2053022150 @default.
• W2018272313 cites W2054489874 @default.
• W2018272313 cites W2058642293 @default.
• W2018272313 cites W2061920588 @default.
• W2018272313 cites W2064162521 @default.
• W2018272313 cites W2066496095 @default.
• W2018272313 cites W2069243531 @default.
• W2018272313 cites W2069903397 @default.
• W2018272313 cites W2071366424 @default.
• W2018272313 cites W2073250859 @default.
• W2018272313 cites W2073749810 @default.
• W2018272313 cites W2075339530 @default.
• W2018272313 cites W2075360204 @default.
• W2018272313 cites W2075775639 @default.
• W2018272313 cites W2078320350 @default.
• W2018272313 cites W2079990704 @default.
• W2018272313 cites W2080523684 @default.
• W2018272313 cites W2083691222 @default.
• W2018272313 cites W2084241674 @default.
• W2018272313 cites W2084463468 @default.
• W2018272313 cites W2084495446 @default.
• W2018272313 cites W2088285541 @default.
• W2018272313 cites W2089464762 @default.
• W2018272313 cites W2089741869 @default.
• W2018272313 cites W2092793174 @default.
• W2018272313 cites W2094194853 @default.
• W2018272313 cites W2097419136 @default.
• W2018272313 cites W2097757153 @default.
• W2018272313 cites W2102458035 @default.
• W2018272313 cites W2102538893 @default.
• W2018272313 cites W2102967105 @default.
• W2018272313 cites W2104692056 @default.
• W2018272313 cites W2107761583 @default.
• W2018272313 cites W2108353466 @default.
• W2018272313 cites W2108864993 @default.
• W2018272313 cites W2109763519 @default.
• W2018272313 cites W2110799222 @default.
• W2018272313 cites W2113746061 @default.
• W2018272313 cites W2113859258 @default.
• W2018272313 cites W2114504059 @default.
• W2018272313 cites W2115852037 @default.
• W2018272313 cites W2121657058 @default.
• W2018272313 cites W2121926190 @default.
• W2018272313 cites W2121965891 @default.
• W2018272313 cites W2124642451 @default.
• W2018272313 cites W2127521842 @default.
• W2018272313 cites W2142828521 @default.
• W2018272313 cites W2146511513 @default.
• W2018272313 cites W2149659318 @default.
• W2018272313 cites W2153857340 @default.
• W2018272313 cites W2160102246 @default.

• next