Porphyry Systems; Fossil and Active Epithermal Systems

The Luanchuan Mo–W–Pb–Zn–Ag magmatic–hydrothermal system in the East Qinling metallogenic belt, China: Constrains on metallogenesis from C–H–O–S–Pb isotope compositions and Rb–Sr isochron ages

“…Porphyry, skarn and epithermal type mineral systems are part of the broader class of intrusion-related systems (Pirajno, 2009). Hence, it is necessary to build a comprehensive model which should be capable of highlighting the genetic links among the three types of deposits, and which can also aid further prospecting for new deposits or extensions of the existing ones in the ore district (Mao et al, 2011b).…”

“…Hence, it is necessary to build a comprehensive model which should be capable of highlighting the genetic links among the three types of deposits, and which can also aid further prospecting for new deposits or extensions of the existing ones in the ore district (Mao et al, 2011b). There are many holistic and idealized models of the porphyry-skarn-epithermal systems (e.g., Hedenquist et al, 1998;Sillitoe et al, 1990, 2010 andreferences therein;Lang et al, 2000;Seedorff et al, 2005;Pirajno, 2009;Mao et al, 2011b). The classic anatomy model proposed by Sillitoe (2010) shows all the principal features of a porphyry system with accompanying vein, skarn and epithermal systems (Pirajno, 2009), and can be presented as follows.…”

40Ar/39Argeochronology, fluid inclusions, and ore‐grade distribution of theJiawula Ag–Pb–Zndeposit,NE China:Implicationsfor deposit genesis and exploration

“…Low‐salinity fluids are often thought to be related with epithermal deposits, and groundwater or meteoric water plays an important role during mineralization process (Hedenquist, ; White & Hedenquist, ; Einaudi, Hedenquist, & Inan, ; Pirajno, ; Zhai, Liu, Wang, Yao, Wu, et al, ). The fluid evolution in the Jiawula deposit characterized by low‐salinity fluid, as well as cooling and decompression of groundwater or meteoric water appear to have been of significance for the mineralization.…”

“…Low-salinity fluids are often thought to be related with epithermal deposits, and groundwater or meteoric water plays an important role during mineralization process (Hedenquist, 1987;White & Hedenquist, 1995;Einaudi, Hedenquist, & Inan, 2003;Pirajno, 2009; Zhai, Liu,…”