نتایج جستجو برای: ore deposits
تعداد نتایج: 37204 فیلتر نتایج به سال:
کانسار آهن خسروآباد در شمال شرقی سنقر و 1 کیلومتری روستای خسروآباد قرار گرفته است. آنومالی های آهن این منطقه در چند نقطه در داخل سری های ولکانیکی و آهکی به نام سری سنقر قرار دارد، که تحت تاثیر دگرگونی ناحیه ای تا حد شیست سبز دگرگون شده اند. نتایج بررسی های انجام شده، نشان می دهد که کانه اصلی کانسار هماتیت و کمتر مگنتیت است که به صورت توده ای، پرکننده ی فضای خالی، جانشینی رگه ای و دانه ای کانی س...
— The economic implications of the new global tectonics are reviewed according to plate anatomy. The uprises, stable platforms, downflows, and median zones exhibit particular features in ore genesis. Intercontinental metallogenic provinces, and intersection of transform fault trajectories with local structures as ore controls are discussed. Possible applications to Turkey are considered. HISTOR...
Abstract Difficulties in dating Mississippi Valley–type (MVT) mineral deposits and the often closely associated dolomitization have led to controversy regarding their origin. We report first radiometric ages for Gorno mining district northern Italy, an example of Alpine subclass MVT deposits. U-Pb hydrothermal carbonates pre- postdating ore-forming event show that base-metal mineralization occu...
The Alligator Rivers Uranium Field (ARUF) includes the mined and unmined Jabiluka, Ranger, Koongarra and Nabarlek unconformity-related uranium deposits and several small prospects including the newly discovered King River prospect. Uranium mineralisation is hosted by a variety of metamorphosed Nimbuwah Domain lithologies that are unconformably overlain by the Kombolgie Subgroup, a basin package...
The inevitable depletion of mineral resources, the constant deterioration of the geological and mining conditions for the development of mineral deposits and the restoration of raw materials from mining waste by recycling are all urgent problems we face today. The solution to this problem may ensure: a considerable extension of raw material source; decrease of investments in opening new deposit...
Shear zone hosted lode gold type deposits at the El Bagre in northeastern of Antioquia department Colombia, are only evidence Permian mineralization to date Colombia Andes. Orebodies structurally controlled and considered as product ore-forming fluids derived from least two episodes fluid flow between shear zones, thus different could lead orebodies ore shoots plunge directions. The La Ye tend ...
For decades, the extraction of minerals has intensified in order to meet the demand of industry. Iron ore deposits are important sources of metals, such as iron (Fe) and manganese (Mn). The particulate ores can be dispersed during extraction, transport and storage, with potential to induce biological impacts. Amphibians are very sensitive to environmental stressors. Therefore, the present study...
Annotation. In Soviet Russia, Geology was the most advanced science in world. After formation of USSR, there a great need for geological research. So, implementation industrialization program directly depended on minerals and raw materials. 25 thousand ore deposits were opened Union, including about 2 that became main pillars country's economy. These facts show what powerful force Geology. The ...
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