TN866 : Exploration of Silica mineralization using GPR and resistivity geophysical methods in south Toroud area, Shahrood region
Thesis > Central Library of Shahrood University > Mining, Petroleum & Geophysics Engineering > MSc > 2018
Authors:
Abstarct: In Iran, silica gemstone mineralization has been occurred in different places with suitable geological environments. In this research, possibility to detect silica mineralization at depth has been carried out by Ground-penetrating radar (GPR) and Resistivity geophysical methods at the Toroud silica mining area, located in 120 km southwest of Shahrood City. The GPR and resistivity data have been acquired along 10 and 2 survey lines, respectively. Mineralogical and petrological studies has been done by polarized microscope, X-ray fluorescence (XRF), Atomic Absorption (AA) and Raman spectroscopy. baxsed on the geological studies, andesite, andesite-basalt and basalt are the main rocks exposed in the study area. The silica mineralization has been occurred as coarse grain quartz including purple, gray amethyst and rock crystal; also light and dark agate and chalcedony as fine grain quartz. The silica mineralization has filled the fractures inside andesite and andesite- basalt rocks as geode or vein/veinlet structures. The GPR results have revealed that where underline laxyers are nearly homogeneous, the reflected waves show parallel patterns but at heterogeneous laxyers they show abundant variations. baxsed on the resistivity results, the probable silica mineralization has been detected in some places. To verify the revealed resistivity anomalies, drilling in one of the probable places of resistivity anomalies was carried out and the top of silica mineralization at the depth of 30 cm was observed.
Keywords:
#Toroud #Silica #Amethyst #Geophysics #Ground-penetrating radar #Resistivity Link
Keeping place: Central Library of Shahrood University
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Keeping place: Central Library of Shahrood University
Visitor: