Results 41 to 50 of about 15,324 (216)
Geological Journal, EarlyView.The rhyolitic ignimbrite and K‐feldspar granite porphyry from the Wangmushan mining district, northern Fujian yield ages of 173.8 ± 0.8 and 102.6 ± 0.4 Ma, respectively. Geochemical data, zircon trace elements, whole‐rock Sr–Nd–Pb isotope data, and zircon Hf isotopic compositions indicate that the rhyolitic ignimbrite originated from partial remelting ...
Wei Shaogang +7 more
wiley +1 more source
Sustainable Development, EarlyView.ABSTRACT With increasing geopolitical risks, environmental pressures, and regulatory demands, the sustainable sourcing of raw materials has become a global priority for achieving the United Nations Sustainable Development Goals (SDGs), particularly SDG 9 (Industry, Innovation and Infrastructure), SDG 12 (Responsible Consumption and Production), and SDG
Francesco Parisi +5 more
wiley +1 more source
Frontiers in Earth SciencePorphyry-type Cu ± Au ± Mo deposits form in the upper (ca. 2–5 km deep) parts of large, long-lived magmatic-hydrothermal systems in which mineralising fluids are thought to be derived from mid-to shallow-crustal magma chambers.
Lawrence C. Carter +2 more
doaj +1 more source
Timing of the Magmatic to Hydrothermal Transition and the Onset of Porphyry Mineralization Across the Yerington Porphyry System, Nevada, USA [PDF]
Porphyry Cu(-Au-Mo) deposits form in the upper (~2–8 km) regions of large, long-lived magmatic-hydrothermal systems. Although extensively studied, the timescales over which sufficient volumes of mineralizing fluids are extracted from magma source regions
Tapster, Simon R. +4 more
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Archaeometry, EarlyView.ABSTRACT This study shows an innovative approach to determine the origin of some Calabrian rocks quarried used in ancient times. Twenty‐five quarries, distributed in all the Calabrian provinces (Southern Italy), were studied and sampled. Ten samples were taken from each quarry, for a total of 250 samples.
Domenico Miriello +5 more
wiley +1 more source
Geosciences, 2014 Porphyry Cu–Au–Pd±Pt deposits are significant Au resources, but their Pd and Pt potential is still unknown. Elevated Pd, Pt (hundreds of ppb) and Au contents are associated with typical stockwork magnetite-bornite-chalcopyrite assemblages, at the central
Demetrios G. Eliopoulos +2 more
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Homer as the first theologian: an allegory and symbol in Porphyry’s treatise ‘’On the сave of the nymphs’’ [PDF]
Вестник Православного Свято-Тихоновского гуманитарного университета: Сериа III. Филология, 2020 This article explores the hermeneutical principles that Porphyry of Tyre used for interpreting the description of the cave of the nymphs in the Odyssey.
Roman Soloviev
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WP1 - Rhomb porphyry - data report [PDF]
, 2021 Samples of rhomb porphyry have been characterized with chemical analyses and different leaching experiments (column, container and standard leaching tests) to study their composition and leaching properties.
Børresen, Marion
core
, 2021 Figure S1: Harker diagrams illustrating major elemental variations of the porphyry and wall rock. QGP—Qiancuoluo granodioritic porphyry; QBG—Qiancuoluo biotite granodiorite; Figure S2: (a) Chondrite-normalized REE patterns and (b) primitive mantle (PM ...
Pan Qu (11474551), Wubin Yang (11474554)
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Talc‐Tempered Pottery From Bala Hissar, Kabul: An Analytical Study
Archaeometry, EarlyView.ABSTRACT Potsherds of cooking ware excavated at Bala Hissar archaeological site in Kabul were studied using X‐ray fluorescence (XRF), scanning electron microscope‐energy dispersive X‐ray spectrometry (SEM‐EDS), Raman spectroscopy, X‐ray powder diffraction (XRPD), thermogravimetric analysis (TGA) and optical microscopy.
Parviz Holakooei +4 more
wiley +1 more source