نتایج جستجو برای: epithermal gold

تعداد نتایج: 83832  

2005
F. J. Kong M. P. Zheng A. L. Wang N. N. Ma

POTENTIAL ANALOG FOR MARTIAN LIFE IN SALINE ENVIRONMENT. F. J. Kong, M. P. Zheng, A. L. Wang, N. N. Ma. 1 R&D Center of Saline Lakes and Epithermal Deposits, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing,100037, China ([email protected]), Dept. Earth and Planetary Sciences and McDonnell Center for Space Sciences, Washington University, St. Louis, MO, 63130...

Journal: :Andean Geology 2021

The high sulfidation epithermal gold deposit El Guanaco is located in the Palaeocene-Lower Eocene metallogenic belt Antofagasta Region, northern Chile, 215 km SE of city. characterized by a system sub-parallel ledges made vuggy silica and quartz enargite veins. In Cachinalito sector, on north western side ore deposit, has discontinuous linear morphology, with general ENE-OSO orientation, consis...

Journal: :Economic Geology 2022

Abstract Mineral inclusions within native gold are features of lode occurrences that preserved in detrital particles. Inclusion assemblages populations particles placers from specific localities revealed through inspection polished sections, and assimilation robust data sets permits reconstruction the source mineralogy. differ considerably according to deposit type, various approaches have been...

Journal: :Turkish journal of analytical chemistry 2022

This study aimed to investigate the risk of element/heavy metal pollution caused by listvenitization. In this context, heavy listvenite-derived soils in region where listvenitized ultrabasic rocks are present as a result hydrothermal alterations vicinity Alakeçi (Bayramiç Çanakkale/Western Türkiye) was investigated with index, geoaccumulation index and integrated parameters. For purpose, Cu, Zn...

2003
M. L. Litvak A. S. Kozyrev A. B. Sanin W. Boynton R. S. Saunders

Introduction. Orbital mapping of induced neutrons and gamma-rays by Odyssey has recently successfully proven the applicability of nuclear methods for studying of the elementary composition of Martian upper-most subsurface. In particular, the suite of Gamma-Ray Spectrometer (GRS) has discovered the presence of large water-ice rich regions southward and northward on Mars [1-3]. The data of neutro...

2001
G. FERRIER G. GRIFFITHS R. BRYANT

The mapping of hydrothermal alteration zones associated with epithermal gold deposits on the island of Lesvos in Greece has been carried out using Landsat Thematic Mapper (TM) satellite and ground remote sensing data. The initial analysis of the satellite data using the minimum noise fraction, matched filter and spectral unmixing techniques identified the altered rock outcrops clearly. The iden...

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