نتایج جستجو برای: petrographical characteristics
تعداد نتایج: 660499 فیلتر نتایج به سال:
Structurally controlled dolomitization typically involves the interaction of high-pressure (P), high-temperature (T) fluids with surrounding host rock. Such reactions are often accompanied by cementation and recrystallization, resulting hydrothermal dolomite (HTD) bodies including several ‘diagnostic’ rock textures. Zebra textures, associated boxwork textures breccias, widely considered to refl...
The Bandan chromite mine is the main chromite deposit in Sistan suture zone, eastrn Iran. The chromite deposits are structurally tabular to lens-shaped bodies hosted by dunitic to harzburgitic mantle peridotites. Similar to Alpine type podiform chromites, chromitite pods are enclosed within dunitic envelops. The chromites show mainly massive to disseminated and also brecciated textures. Chemica...
East of Shahindezh (south of West Azarbaidjan province), as a part of Irano-Himalayan karst bauxite belt, comprises discontinuous layers and lenses of bauxite, laterite, and kaolin within the Ruteh carbonate formation (Middle- Upper Permian). The XRD analyses show that the lateritic ores have rather simple mineralogy, and consist of hematite, boehmite, and kaolinite as major phases accompanied ...
Abstract Late Cenozoic basaltic rocks in Nang Rong Columnar Jointed Basalts southern Khorat Plateau are among the greatest columnar basalts Thailand as famous geoheritage sites. This work aims to characterize and evaluate post-quarrying area by field investigation, petrography, geochemistry, geological engineering. A petrographical study determines these olivine basalts, presenting porphyritic ...
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