نتایج جستجو برای: porphyry molybdenum

تعداد نتایج: 14702  

Journal: :Minerals 2022

The Zhashui-Shanyang ore cluster area is one of the most important gold polymetallic ones in northwestern China. Qinglingou deposit a newly discovered small-scale area. Gold mineralization closely related to acid intrusive rocks has been found for first time this In paper, geochronology, whole-rock geochemistry, and isotope signature granite porphyries are studied. They characterized by variabl...

2005
T. D. Ullrich

Porphyry Cu and epithermal deposits are spatially and temporally related to specific volcanic and plutonic rocks emplaced during the formation of long-lived magmatic arcs formed along convergent plate boundaries (e.g., Sillitoe, 1972; Sutherland Brown, 1976; Titley, 1982; Sawkins, 1990; Bissig et al., 2003). Recognizing the presence, types of deposits, and age of the mineralized volcanoplutonic...

2009
Jerzy Kaczynski Göran Hansson Sven Wallerstedt

Hepatic porphyries have been associated with an increased risk of primary liver cancer (PLC), which on the other hand may cause an increased porphyrin production. To evaluate the role of an underlying liver disorder we analyzed porphyrins in patients with hepatocellular carcinoma (HCC) (n = 65), cholangiocellular carcinoma (n = 3), or suspected PLC, which turned out to be metastases (n = 18) or...

2007

This paper focuses on the relationships between the geological model and exploration techniques for porphyry Cu ± Au deposits, with reference to the discovery record and exploration practices over the past fifteen years. The porphyry model is built on a long record of study dating back to the 1960s which has been gradually refined to encompass differences and complexities in mineralization and ...

The purpose of mineral exploration is to find ore deposits. The main aim of this work is to use the fuzzy inference system to integrate the exploration layers including the geological, remote sensing, geochemical, and magnetic data. The studied area was the porphyry copper deposit of the Kahang area in the preliminary stage of exploration. Overlaying of rock units and tectonic layers were used ...

Journal: :iranian journal of radiation research 0
s.a. memon nuclear institute of medicine and radiotherapy (nimra) jamshoro, pakistan n.a. laghari nuclear institute of medicine and radiotherapy (nimra) jamshoro, pakistan s.t. qureshi university of sindh, jamshoro, pakistan f. mehdi nuclear institute of medicine and radiotherapy (nimra) jamshoro, pakistan

background: technetium-99m radioisotope is the backbone of any nuclear medicine institute. this radioisotope is acquired by the elution of molybdenum-99/technetium-99m generator which emits 141 kev gamma ray and having 6.04 hour half-life. occasionally the contents of molybdenum-99 may mix up with elute, which may affect image quality and patients may receive higher doses than recommended. this...

2013
Qizhong Lin Huadong Guo Yu Chen Yongming Wei

The fast mineral exploration system with remote sensing is a brand new exploration system of recognition, identification, analysis and prediction. It takes metallogenic materials as the detection targets, uses the spectrum measuring technique as detection means and takes the spatial and temporal sequence of mineralization and alteration information as an evaluation basis. It develops and improv...

Journal: :Geosciences 2021

Airborne magnetic and radiometric datasets have, over the past few years, become powerful tools in identification of porphyry systems which may host economic copper–gold–molybdenum ore bodies. Magnetisation contrasts with unaltered rocks, coupled elevated signature, compared to rock, makes large-scale copper possible. Integrating these two different stream sediment data other geochemical explor...

Journal: :Ore Geology Reviews 2021

Most of the world’s large molybdenum (Mo) deposits are genetically related to magmas that underwent significant fractional crystallization and fluid exsolution, residual silicate melts commonly peralkaline. To understand relationship between melt compositions genesis porphyry Mo mineralization, partition coefficients (DMo) felsic were determined at 850 °C, 900 100 MPa with various values A/NK [...

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