نتایج جستجو برای: quartz veins
تعداد نتایج: 29821 فیلتر نتایج به سال:
The Mazra'eh Shadi is located about 130 km northeast of Tabriz (NW Iran) in the Arasbaran metallogenic belt. The deposit occurs as a series of veins within the Eocene andesites. Mineralization shows epithermal system that controlled by fault distribution. Epithermal textures within the veins include comb, vaggy quartz, cockade, boxworke, plate calcite and breccia. Pyrite is the main ore mineral...
Northern Mozambique hosts numerous occurrences of gold mineralization in metamorphic terranes, which are little known because the insufficient studies. In this work, we describe main geological and geochemical characteristics Nanlia Makorongo prospects located Namuno district, northeastern Mozambique. We report mode occurrence gold, petrography mineralogy host rocks ores, fluid inclusion stable...
[1] Taiwan’s Hsüehshan range experienced penetrative coaxial deformation within and near the brittle-plastic transition between 6.5 and 3 Ma. This recent and short-lasting deformation in an active, well-studied orogen makes it an ideal natural laboratory for studying crustal rheology. Recrystallized grain size piezometry in quartz and Ti-in-quartz thermobarometry yield peak differential stresse...
Sangan prospect area is located northeast of Torbat-e-Heydarieh in Khorasan Razavi Province and in relation to regional geology, it is situated in eastern section of Khaf-Kashmar-Bardaskan magmatic belt. Metamorphosed sediments of the Shemshak Formation (slate, schist, quartzite) is the oldest unit, which is intruded by Kafardoogh granitic intrusion. The dikes of quartz monzosyenitic and diorit...
A strategy for establishing the supply chain of tin, which is used in various industries, necessary because tin’s and demand are highly dependent on a few countries. Focusing Mongolia as resource-rich country, this study examines current state tin mineral resources characteristics mineralization according to tectonic environment. The magmatic activity that occurred from Late Paleozoic Mesozoic ...
kalchouyeh area in southwest of naein is located in the urumieh-dokhtar volcano-plutonic belt. mineralization occurred mainly as disseminations and veinlets hosted by trachy-andesite and pyroxene andesites. for mineralogy, alteration, fluid inclusion and geochemical studies, the two major mineralized zones: a (larger vein) from the north-northwest and b (smaller vein) from the east-southeast of...
The Caledonian orogenic belt of northern Britain hosts some significant quartz vein-hosted gold deposits. However, as in orogenic belts worldwide, the relationship between gold mineralization and regional tectonics, magmatism, and metamorphism is a matter of debate. This is primarily due to the absence of precise temporal constraints for the mineralization. Here we report high-precision 40Ar/39...
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