Quartz porphyry of rhyolitic composition though a volumetrically minor is an important component metavolcanic successions in the Gadag schist belt western Dharwar craton. The quartz porphyries are calc-alkaline, enriched light rare earth elements (Lan/Ybn ~ 10–20) and with strong negative Eu anomaly (Eu/Eu*N=0.45–0.58). These features, coupled high K2O/Na2O (0.8 to 1.46), low Nb/Th (<1), Lan/Sm...

Base metal mineralization at the Baal Gammon and Isabel deposits of Herberton Mineral Field (HMF) is hosted in metamorphosed greywacke beds Hodgkinson Formation, which were intruded by granite, porphyry dykes overlain volcanic rocks Kennedy Igneous Association during Carboniferous Permian. The tin deposit a silicified, chlorite-altered, quartz-feldspar (UNA Porphyry). polymetallic veins hosting...

The target of this research is recognition the alteration zones utilizing concentration-area fractal methodology according to reflection main minerals each zone that enhanced by Spectral Feature Fitting (SFF) method due Advanced Space-borne Thermal Emission and Reflection Radiometer (ASTER) satellite images in Saryazd porphyry system, central Iran. alterations mineralization developed Eocene vo...

The surface geochemistry techniques widely employed during the 1960’s to 1980’s are effective at discovering near-surface deposits, but are largely ineffective for exploring under deep cover or for deep extensions of known mineralisation in a near-mine environment. Instead, mineral explorers must focus their attention on rapidly aggregating and synthesising disparate data to build into holistic...

Abstract Bringing together evidence preserved by Aristoxenus, Aristides Quintilianus, Ptolemy, Porphyry and the Greek musical handbooks in a unified framework, this article its sequels show how reconstruction of Classical modulation system offered Lynch 2018 is confirmed melodies recorded documents. Taken jointly, these articles offer first comprehensive account use notation tónoi ancient docum...

With the advancement of use geophysical methods in mining exploration, possibility restudying known mineral deposits that could have greater potential than previously estimated is opening up, as case Maricunga Belt (MB), which a metallogenic belt located east Copiapó, Chile, with length 200 km and oriented NNE-SSW direction. This hosts significant gold classified porphyry (-copper), epithermal ...

Abstract In 2020, during excavations in the Wadi al-Ghozza Eastern Desert of Egypt, archaeologists from French Archaeological Mission to Egypt discovered a well-preserved Flavian praesidium. This small and unusually shaped fort, identified ostraca found fortress as Berkou (Βɛρκου), lay along track leading ancient Kaine (Qena) imperial quarries at Porphyrites. The fort over remains Ptolemaic vil...

Abstract The detrital zircons in tills overlying the Guichon Creek batholith, British Columbia, Canada, have trace element concentrations and ages similar to those of from bedrock samples which they are interpreted been sourced. Rocks core batholith that host porphyry copper mineralization distinct zircon compositions relative distal, barren margin. We analyzed 296 separated 12 subglacial till ...