نتایج جستجو برای: argillic alteration

تعداد نتایج: 45629  

2015
Chunye Lin Jing Wang Hongguang Cheng Wei Ouyang

The wetland Argialbolls pedon was chosen to investigate the effects of pedogenic processes and anthropogenic activities on the vertical distribution of As concentrations. Two wetland Argialboll cores (90 cm long) were collected from the Sanjiang Plain in northeastern China and analyzed for pH, soil organic matter (SOM), Fe, Mn, and As. The results indicate that SOM accumulated in the upper hori...

Journal: :Geologica Balcanica 2021

The epithermal high-sulphidation Cu-Au Chelopech deposit is characterized by a well-developed and well-traceable hydrothermal footprint manifested in the volcanic host rocks. economic ore mineralization embedded strong silicification, included among advanced argillic zone of alteration, smoothly transitioning to quartz-sericite alteration that evolves into widespread propylitics. accessible for...

Journal: :Journal of Applied Geology 2021

ABSTRACT. This study is performed to investigate the characteristics of intrusive andesite rock consisting Kalirejo Road Side Slope located in Kulon Progo Mountains. The rocks slope are identified by visual observation hand specimens field, petrographic and X-ray Diffraction (XRD) analyses samples laboratory, upon which genetic classification determined. altered types determined presence specif...

Journal: :Eksplorium: buletin pusat pengembangan bahan galian nuklir 2023

Bolaang Mongondow is located on the Eastern North arm of Sulawesi. This area a Neogene-aged magmatic arc composed plutonic and volcanic rocks that indicate mineralization-bearing host rocks. The study aimed to determine geological setting alteration based observations geochemical analysis. method used mapping, followed by laboratory studio data lithology this andesite, diorite, pyroclastic brec...

Calagari, AliAsghar, Miranvari, Azam Sadat, Siahcheshm, Kamal, Sohrabi, Ghahraman,

The Zailic gold-bearing veins are located in the Arasbaran metallogenic zone, east of Ahar, East-Azarbaidjan Province. The most important lithologic units in this area are andesitic and trachy-andesitic tuffs and lavas of Upper Eocene age hosting vein-type gold mineralization. Theses rocks have suffered silicic, argillic, phyllic, and propylitic alterations brought about by hydrothermal fluids....

Journal: :Earth Science Informatics 2015
Masoud Moradi Sedigheh Basiri Ali Kananian Keivan Kabiri

The study area is located ~50 km in the north of Tehran capital city, Iran, and is a part of central Alborz Mountain. The intrusive bodies aged post Eocene have intruded in the Eocene volcanic units causing hydrothermal alterations in these units. Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) images were used to map hydrothermal alteration zones. The propylitic, phyllic...

Journal: Geopersia 2012
Hassan Mirnejad Soheila Nourali

Sar-Kuh porphyry copper deposit is located 6 km southwest of the Sar-Cheshmeh copper mine, Kerman Province, Iran. Based on field geology, petrography and fluid inclusions studies, four alteration types have been identified in the Sar-Kuh area. Early hydrothermal alteration formed a potassic zone in the central parts of Mamzar granite/grano-diorite stock and propylitic alteration in its peripher...

محمدی, سید سعید, نخعی, ملیحه, رسا, ایرج , سمیعی, سمیه ,

Tertiary acidic to intermediate volcanic activities and the role of fault zones in Sarbisheh area have provided suitable conditions for the formation of bentonite, especially in pyroclastic deposits. Southeast Gondakan, Kalateh Pedaran, Golab, Golestan, Asfich, Hasan Kolangi, and Kangan bentonites in 1/100000 geological map of Sarbisheh were selected as the case study. Satellite image processin...

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