نتایج جستجو برای: paragenesis
تعداد نتایج: 230 فیلتر نتایج به سال:
The meteoric water has obviously changed the physical properties of dolostone reservoirs in vertical vadose zone and horizontal phreatic zone, but its influence on shallow burial beneath surface is still unclear. This study aims to reveal effect through X-ray diffraction, cathodoluminescence, C, O, Sr isotope using sample from Majiagou Formation Daniudi gas field, Ordos Basin. diagenesis parage...
There are metabasite exposures inside ophiolitic belt of northwest Sabzevar that metamorphosed under high pressure granulite facies. On the basis of mineralogical paragenesis, reactional textures between different mineralogical assemblages, textural and mineralogical relations between inclusion and porphyroblast and stability fields of different mineralogical assemblages, five stages of evoluti...
The variety of lithologies from Late Precambrian to Quaternary and suitable conditions for mineralization caused formation of Zarshuran gold and arsenic deposit in black schists, shale, limestone and dolomite. The ore paragenesis include As, Sb, Fe, Pb, Zn, Hg sulfides and gold along with fluorite, barite and quartz. The most important alteration is silicification which is more obvious in the o...
The potential environmental impact of historical mining and ore processing on stream sediments water was studied in a small siderite iron deposit with diverse sulfide mineral paragenesis. main aim to characterize solid carriers potentially toxic elements (PTEs) mine waste, understand their fate fluvial systems. General mineralogy (X-ray powder diffraction) individual PTE (scanning electron micr...
Abstract The major-element chemical composition of garnet provides valuable petrogenetic information, particularly in metamorphic rocks. When facing detrital garnet, information about the bulk-rock and mineral paragenesis initial garnet-bearing host-rock is absent. This prevents application thermo-barometric techniques calls for quantitative empirical approaches. Here we present a discriminatio...
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