نتایج جستجو برای: silicification

تعداد نتایج: 299  

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...

Journal: :Iraqi geological journal 2023

This research aims to examine the relationship between hydrothermal alteration and mineralization (ore mineralogy) in study area geological structures deformation mechanism. The was determined based on petrographic analysis, ore mineralogy which microscopic analysis. mechanism is by paleo stress analysis using win-tensor, direction of principal joints/veins faults calculated right-dihedron meth...

Ajalli, , Tale Fazel, , Torkian, ,

Rasht Abad Cu±Au deposit is a part of the Tarom-Hashtjin metallogenic belt in the western Alborz-Azerbaijan zone. The exposed units in the area include volcanic, sub-volcanic calc-alkaline to shoshonitic rocks with Upper Eocene age and belongs to magmatic arcs setting. The most important alterations related to mineralization include low temperature silicification and sericitic alterations. Mine...

Journal: :Journal of geoscience, engineering, environment and technology 2022

This study aims to contribute improve the knowledge on setting of Irbiben granites, located south gold deposit this locality (Tagragra d'Akka buttonhole, Anti-Atlas, Morocco). The petrographic characterization showed leucocratic porphyry rocks, with a mineralogy dominated by quartz and phenocrysts plagioclase, alkali feldspars sometimes centimetric size as well very small sulphides metallic lus...

Journal: :Biomaterials 2011
Nan Li Li-na Niu Yi-pin Qi Cynthia K Y Yiu Heonjune Ryou Dwayne D Arola Ji-hua Chen David H Pashley Franklin R Tay

Biocalcification of collagen matrices with calcium phosphate and biosilicification of diatom frustules with amorphous silica are two discrete processes that have intrigued biologists and materials scientists for decades. Recent advancements in the understanding of the mechanisms involved in these two biomineralisation processes have resulted in the use of biomimetic strategies to replicate thes...

Journal: :Nanotechnology 2006
Sung Min Kang Kyung-Bok Lee Dong Jin Kim Insung S Choi

The encapsulation of individual nanoparticles has gained great attention as a method for both stabilizing nanoparticles and tailoring their surface properties. In particular, the encapsulation of nanoparticles with silica shells is advantageous for bioconjugation and applications to (nano)biotechnology. Herein we report a method for constructing gold nanoparticle (AuNP)/silica core/shell hybrid...

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