نتایج جستجو برای: ore mineral

تعداد نتایج: 75576  

Journal: :Remote Sensing 2018
Sara Salehi Sandra Lorenz Erik Vest Sørensen Robert Zimmermann Rasmus Fensholt Bjørn Henning Heincke Moritz Kirsch Richard Gloaguen

Remote and extreme regions such as in the Arctic remain a challenging ground for geological mapping and mineral exploration. Coastal cliffs are often the only major well-exposed outcrops, but are mostly not observable by air/spaceborne nadir remote sensing sensors. Current outcrop mapping efforts rely on the interpretation of Terrestrial Laser Scanning and oblique photogrammetry, which have ina...

Journal: : 2023

Purpose. Creation of mining and geological models virtual complex ore blocks a bench to develop basic methodology for determining the structure structural sections mineral deposits. Methodology. In scientific technical substantiation geological, indicators in terms saturation complexity morphological ledges, methods abstract-logical analysis, synthesis, systematization, method theoretical gener...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1387

چکیده ندارد.

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Sharon E Bone James J Dynes John Cliff John R Bargar

Uranium is an important carbon-free fuel source and environmental contaminant that accumulates in the tetravalent state, U(IV), in anoxic sediments, such as ore deposits, marine basins, and contaminated aquifers. However, little is known about the speciation of U(IV) in low-temperature geochemical environments, inhibiting the development of a conceptual model of U behavior. Until recently, U(IV...

Journal: :Bulletin of Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences 2018

Journal: :The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 1950

Journal: :Minerals 2022

The lead–zinc ore is a typical low-grade complex polymetallic sulphide ore. Its mineralogy characterized by high content of cryptocrystalline graphite, low lead, zinc, and copper, fine grain size. However, the aggregation size sulfide mineral aggregations coarse, symbiotic relationship relatively simple. Conventional process treatment requires grinding into monomer dissociations followed prefer...

Journal: :journal of sciences, islamic republic of iran 2016
k. khoshnoodi m. yazdi m. behzadi m. gannadi-maragheh

the study area is located in the central iranian tectono-magmatic zone, which is known for its world-class ioa-type iron ore deposits. the advanced space borne thermal emission and reflection radiometer (aster) and landsat enhanced thematic mapper plus (etm+) image-processing techniques, were used in satellite imagery through conventional and also modern processing methods including band ratios...

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