نتایج جستجو برای: sedimentary copper mineralization

تعداد نتایج: 105857  

2016
Walter Prochaska

A consanguineous origin of the sparry siderite and magnesite mineralizations of the Eastern Alps has been repeatedly discussed in the past, often without the back-up of sound scientific arguments. Here, it is shown that the characteristics of these mineralizations including structures, fluid parameters, timing etc. are amazingly similar suggesting in fact the genetic linkage of these deposits. ...

Journal: :Journal of Applied Sciences and Environmental Management 2015

Journal: :Journal of Nepal Geological Society 2023

Exploration of copper ore in the Nepal Himalayas has been carried out by different researchers at times. The author conducted detailed geological studies and mineral exploration some polymetallic prospects also reviewed literature related to Nepal. present research is able delineate two distinct mineralization belts extending from west east identify promising sites for that could be feasible mi...

2018
Elzbieta Klimuszko Karolina Orywal Teresa Sierpinska Jarosław Sidun Maria Golebiewska

Objectives The objectives of the study were to evaluate the content of copper and zinc in individual layers of tooth enamel and to analyze the relationships between the study minerals in individual layers of tooth enamel. Patients and methods Fifteen human permanent teeth were cut off every 150 μm alongside the labial surface. Acid biopsy of each layer was performed. The zinc content was dete...

حافظ دربانی, مجید, مظلومی بجستانی, علیرضا, ملک‌زاده شفارودی, آزاده , کریم‌پور, محمدحسن ,

Gazu prospect area is located about 65Km southeast of Tabas in the southern part of Shotori range. Sub­­-volcanic intermediate intrusive rocks (Upper Cretaceous?), monzonitic to dioritic in composition, intruded into carbonate rocks of Shotori Formation (Triassic) which are the main source for copper mineralization in Gazu district. Alteration zones associated within the intrusive are: Quartz- ...

2015
Jena E. Johnson Samuel M. Webb Chi Ma Woodward W. Fischer

Oxidation of manganese (II) to manganese (III,IV) demands oxidants with very high redox potentials; consequently, manganese oxides are both excellent proxies for molecular oxygen and highly favorable electron acceptors when oxygen is absent. The first of these features results in manganese-enriched sedimentary rocks (manganese deposits, commonly Mn ore deposits), which generally correspond to t...

2014
Kirsten L. Siebach John P. Grotzinger

While the presence of water on the surface of early Mars is now well known, the volume, distribution, duration, and timing of the liquid water have proven difficult to determine. This study makes use of a distinctive boxwork-rich sedimentary layer on Mount Sharp to map fluid-based cementation from orbital imagery and estimate the minimum volume of water present when this sedimentary interval wa...

Journal: :زمین شناسی اقتصادی 0
محمد علی رجب زاده نازنین زمان ثانی

manganese ore deposits occurred in various types of syngenetic, diagenetic and epigenetic mineralization in association with radiolarian cherts in colored melange of neyriz ophiolite in abadeh tashk area, eastern fars province. microscopic study and xrd analyses show a simple mineralogy for manganese compounds in all types. psylomelane and braunite are the primary manganese compounds in syngene...

Journal: :Remote Sensing 2013
Lei Liu Jun Zhou Dong Jiang Dafang Zhuang Lamin R. Mansaray Bing Zhang

The Xiemisitai area, West Junggar, Xinjiang, China, is situated at a potential copper mineralization zone in association with small granitic intrusions. In order to identify the alteration zones and mineralization characteristics of the intrusions, Landsat Enhanced Thematic Mapper (ETM+) and Quickbird data of the study area were evaluated in mapping lithological units, small intrusions, and alt...

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