نتایج جستجو برای: orogenic gold mineralization
تعداد نتایج: 97355 فیلتر نتایج به سال:
Abstract Rutile from a wide range of orogenic gold deposits and districts, including representative world-class deposits, was investigated for its texture trace element composition using scanning electron microscopy, probe microanalysis, laser ablation-inductively coupled plasma-mass spectrometry. Deposits are hosted in various country rocks felsic to ultramafic igneous sedimentary rocks, which...
The method of weights of evidence is one of the most important data driven methods for mineral potential mapping in GIS. In this method, considering the characteristics of known mineralized locations, we can prospect new mineralized areas. In this research work, the method of weights of evidence has been used for hydrothermal gold potential mapping in Torbat-e-Heydarieh area, east of Iran. As a...
The growing interest in Ghana’s gold mining sector due to the recent upsurge in the price of gold has impacted greatly on the economy of the country with regard to its revenue generation capacity. There is therefore the need to develop this sector. Hence, any new method which is relatively low cost and has comparable efficiency compared to prevailing conventional methods in delineating new pote...
Introduction Epithermal deposits are usually found in association with near-surface magmatic-hydrothermal environments with volcanic rocks. According to studies, their formation depth is less than 1.5 km and the temperature for their formation is less than 300 ° C. Epithermal deposits are usually rich in gold to gold-silver and rich in silver and include low sulfide, medium sulfide and hig...
• Gold mineralization occurred in the subduction stage of Early Paleozoic Proto-Tethys ocean, and its age is limited between 454 Ma 439 Ma. H-O-S-Pb-Hf isotopes indicate a magmatic-hydrothermal source, closely related to monzogranites. The Heihaibei gold deposit may instead be classified as granitic intrusion-related deposit. newly discovered southern part Eastern Kunlun Orogenic Belt. Its most...
The late Mesozoic destruction of the eastern North China Craton (NCC) resulted from intense crust-mantle interaction, culminating in formation world-class gold deposits Jiaodong Peninsula at ca. 120 Ma. We present zircon U-Pb geochronological data, Hf isotopic compositions, whole-rock major and trace element, Sr-Nd-Pb compositions for two suites granitoids: one (the Linglong suite) that hosts s...
Abstract The punctuated distribution of major gold deposits along orogenic belts is poorly understood. In northern Perú, cluster trends that transect the subparallel Phanerozoic accreted onto western margin Archean–Proterozoic Amazonian craton. This suggests influence as yet unrecognized pre-Andean basement structures in controlling localization deposits. We report newly discovered Tomac ophiol...
Mineralization of Te and Se was found in gold deposits uranium occurrences, located the Paleoproterozoic greenstone belts Northern Fennoscandia. These are different genesis, but all them formed at late stages Svecofennian orogeny, they have common geochemical association metals Au, Cu, Co, U, Bi, Te, Se. The prevalent minerals Ni Fe tellurides melonite frohbergite, Pb telluride altaite. Bismuth...
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