@article{fdi:010073621,
  title = {{A} genetic model based on evapoconcentration for sediment-hosted exotic-{C}u mineralization in arid environments : the case of the {E}l {T}esoro {C}entral copper deposit, {A}tacama {D}esert, {C}hile},
  author = {{F}ernandez-{M}ort, {A}. and {R}iquelme, {R}. and {A}lonso-{Z}arza, {A}. {M}. and {C}ampos, {E}. and {B}issig, {T}. and {M}podozis, {C}. and {C}arretier, {S}{\'e}bastien and {H}errera, {C}. and {T}apia, {M}. and {P}izarro, {H}. and {M}unoz, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}lthough the formation of exotic-{C}u deposits is controlled by multiple factors, the role of the sedimentary environment has not been well defined. {W}e present a case study of the {E}l {T}esoro {C}entral exotic-{C}u deposit located in the {A}tacama {D}esert of northern {C}hile. {T}his deposit consists of two mineralized bodies hosted within {L}ate {C}enozoic gravels deposited in an arid continental environment dominated by alluvial fans with sub-surficial ponded water bodies formed at the foot of these fans or within the interfan areas. {B}oth exotic-{C}u orebodies mostly consist of chrysocolla, copper wad, atacamite, paratacamite, quartz, opal, and calcite. {T}he most commonly observed paragenesis comprises chrysocolla, silica minerals, and calcite and records a progressive increase in p{H}, which is notably influenced by evaporation. {T}he results of stable isotope analyses (delta {C}-13 and delta {O}-18) and hydrogeochemical simulations confirm that evapoconcentration is the main controlling factor in the exotic-{C}u mineralization at {E}l {T}esoro {C}entral. {T}his conclusion complements the traditional genetic model based on the gradual neutralization of highly oversaturated {C}u-bearing solutions that progressively cement the gravels and underlying bedrock regardless of the depositional environment. {T}his study concludes that in exotic-{C}u deposits formed relatively far from the source, a favorable sedimentary environment and particular hydrologic and climatic conditions are essential to trap, accumulate, evapoconcentrate, neutralize and saturate {C}u-bearing solutions to trigger mineralization. {T}hus, detailed sedimentological studies should be incorporated when devising exploration strategies in order to discover new exotic-{C}u resources, particularly if they are expected to have formed relatively far from the metal sources.},
  keywords = {{E}xotic-{C}u deposit ; {A}tacama {D}esert ; {C}hrysocolla ; {S}ediment-hosted ore deposit ; {S}upergene mineralization ; {S}table isotopes ; {CHILI} ; {ATACAMA}},
  booktitle = {},
  journal = {{M}ineralium {D}eposita},
  volume = {53},
  numero = {6},
  pages = {775--795},
  ISSN = {0026-4598},
  year = {2018},
  DOI = {10.1007/s00126-017-0780-2},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073621},
}