Buscar
Mostrando ítems 11-20 de 108
Formation of massive iron deposits linked to explosive volcanic eruptions
(2018)
The genetic link between magmas and ore deposit formation is well documented by studies of fossil hydrothermal systems associated with magmatic intrusions at depth. However, the role of explosive volcanic processes as ...
A Review of the Arroyo Rojo VMS Deposit, Tierra del Fuego
(Springer Nature Switzerland AG, 2021)
The Arroyo Rojo VMS deposit is the most studied polymetallic ore of Tierra del Fuego, Argentina. The first mentions of its existence began in the 80s by Minera Aguilar, which has discovered a small nunatak containing a ...
The geochemistry of magnetite and apatite from the El Laco iron oxide-apatite deposit, Chile: Implications for ore genesis
(Society of Economic Geologists, USA, 2020)
The textures of outcrop and near-surface exposures of the massive magnetite orebodies (>90 vol % magnetite) at the Plio-Pleistocene El Laco iron oxide-apatite (IOA) deposit in northern Chile are similar to basaltic lava ...
METAMORPHISM OF HYDROTHERMALLY ALTERED ROCKS IN A VOLCANOGENIC MASSIVE SULFIDE DEPOSIT: THE PALMEIRÓPOLIS, BRAZIL, EXAMPLEMETAMORFISMO DE ROCHAS HIDROTERMALMENTE ALTERADAS ASSOCIADAS A DEPÓSITO DE SULFETO MACIÇO VULCANOGÊNICO: O EXEMPLO DE PALMEIRÓPOLIS, BRASIL
(Sociedade Brasileira de Geologia, 2017)
Trace elements in magnetite from massive iron oxide-apatite deposits indicate a combined formation by igneous and magmatic-hydrothermal processes
(Elsevier, 2015)
Iron oxide-apatite (IOA) deposits are an important source of iron and other elements (e.g., REE, P, U, Ag and Co) vital to modern society. However, their formation, including the namesake Kiruna-type IOA deposit (Sweden), ...
The Arroyo Rojo volcanic-hosted massive sulphide deposit (Tierra del Fuego, southernmost Argentina): geology, mineralogy, petrography and mineral chemistryEl depósito de sulfuros masivos hospedado en rocas volcánicas de Arroyo Rojo (Tierra del Fuego, extremo sur de Argentina): geología, mineralogía, petrografía y química mineral
(Universidad Nacional Autónoma de México. Centro de Geociencias, 2010-03)
The Arroyo Rojo deposit is the most important polymetallic, volcanic–hosted massive sulphide close to the town of Ushuaia in the rhyolitic belt of the Andes of the Tierra del Fuego. The deposit occurs in a region with ...
Mineralogical, IR-spectral and geochemical monitoring of hydrothermal alteration in a deformed and metamorphosed Jurassic VMS deposit at Arroyo Rojo, Tierra del Fuego, Argentina
(Elsevier, 2012-01)
The Arroyo Rojo Zn-Pb-Cu volcanogenic massive sulfide deposit is the main deposit of the Fin del Mundo District in the Fuegian Andes, Argentina. This deposit is hosted by a Middle Jurassic volcanic and volcanoclastic ...
New contributions to the understanding of Kiruna-type iron oxide-apatite deposits revealed by magnetite ore and gangue mineral geochemistry at the El Romeral deposit, Chile
(Elsevier, 2018)
Iron oxide-apatite (IOA) or Kiruna-type deposits are an important source of iron and other elements including REE, U, Ag, and Co. The genesis of these deposits remains controversial, with models that range from a purely ...