Compositional features of a total 1887 gold alluvial particles from six localities to the south Loch Tay in central Scotland were interpreted establish different types source mineralization. Populations each locality grouped according alloy and inclusion signatures. Inclusion suites provided primary discriminant with Group 1 showing narrow range simple sulphide sulphoarsenide species, whereas w...

First large-scale concentration of gold to ore grade in Earth’s crust took place at around 2.9 Ga quartz-pebble conglomerates, well before endogenous deposits, such as porphyry and epithermal systems or orogenic-type started play a significant role from ca. 2.75 onwards. The conglomerate-hosted placers, typified by those the Mesoarchaeaen Witwatersrand Basin South Africa, are thought have been ...

Gold is typically transported by mafic and evolved magmas into the upper crust to be deposited in shallow oxidized porphyry epithermal environments. However, magmatic behavior of gold still poorly understood warrants further attention. Additional insights evolution other noble metals can provided investigations primitive convergent zone products their differentiation that contain primary-textur...

Open spaces in epithermal veins of the Bohemia mining district, Oregon, USA, filled with sediments during hydrothermal activity. These sediments consist mainly of chalcedony, rock fragments, and vein quartz fragments. In addition, hematite is deposited during stage three of the vein development. Observed sedimentary features include draping laminae, erosion surfaces, slumping, and graded beddin...

Radiation sensitive polymer gels are among the most promising three-dimensional dose verification tools developed to date. Polymer gel dosimeter known by the acronym MAGIC has been tested for evaluation of its use in boron neutron capture (BNCT) dosimetry. We irradiated a large (diameter 10 cm, length 20 cm) cylindrical gel phantom in the epithermal neutron beam of the Finnish BNCT facility at ...

Introduction: Epithermal neutrons provide a robust measure of hydrogen abundance and have been used on many planetary bodies to measure hydrogen enhancements [e.g. 1,2,3,4]. Lunar polar epithermal neutrons display a strong, statistically significant, offpolar enhancement that is not clearly explainable by the current thermal environment. One plausible explanation is that these enhancements repr...

The PRISMA (Hyperspectral Precursor of the Application Mission) satellite Italian Space Agency (ASI) is in orbit since March 2019. hyperspectral data have found applications many disciplines including environmental monitoring, agriculture, forest and grassland mapping, land use cover hydrology, geology, glaciology. In this study imagery are evaluated for characterization surface outcrop quartz-...