نتایج جستجو برای: host country’s mineral policies
تعداد نتایج: 399503 فیلتر نتایج به سال:
mining and metallurgical projects are among those that require the most sizeable invest-ments undertaken in iran. one target of the current development plan and the ministry of mines and industries has been to attract foreign investment in mining projects. a survey of world-class mining companies was conducted to determine their expectations and in order to recommend a frame work for iran aimed...
environmental degradation is not only well advanced already, but also is getting progressively worse as the countrys population, urbanisation and industrialisation increase, and as its economy develops generally. This concern has led to a growing recognition that economic development and the health and well-being of the countrys population are closely linked with improved environmental manageme...
کاربردهای سنگزایی شیمی کانی دیوپسیدیتهای گوشته در بخش شرقی افیولیت سبزوار (شمال شرقی ایران مرکزی)
In the eastern part of the Sabzevar ophiolite, southeast of Soleymanieh, there are white to pale greenish veins of diopsidite with 1–15 cm width inside mantle serpentinized harzburgites. The center of these veins is rather homogeneous and includes a monomineralic clinopyroxen with granular texture. The contact between the pure clinopyroxene and its host peridotite is always progressive and char...
The Ghikhlar area is located at the NW Marand town, East Azarbaidjan. The wide range of Plio-Quaternary volcanic activites with volcanic and associated volcano-clastic rocks having compositions mainly as andesite to silica-undersaturated rocks (leucite basanite, leucite-tephrite and tephrite) have been covered mostly the rock units prior to the Cenozoic. The phenocrysts in andesites are amphibo...
This paper presents a system dynamics model that allows the user to examine the effects of changes in host government minerals policy on the investment and operating decisions of mining firms. The emphasis throughout the model simulations is on the effects of environmental policy because of the significant effect it has on international mining. The model, comprising over 180 interrelated variab...
Chah Sorb deposit is located about 66 Km north of Tabas and 16 Km north-west of Shirgesht village. The mineralogy is simple; galena is the main primary mineral and cerussite is the main secondary mineral. Sphalerite, pyrite, chalcopyrite, tetrahedrite are other main minerals. Secondary minerals are anglesite, malachite, flourite, wulfenite, minium, azurite and Fe-hydroxids. Some important alter...
The Emarat and Muchan zinc-lead ore deposits are located in southwest of Arak within the middle part of the Malayer-Esfahan belt. These deposits have formed as stratabound within carbonate strata of Lower Cretaceous. Mineralization in these deposits is mainly open space filling, which consists of sphalerite, galena, pyrite and minor quantities of chalcopyrite associated with host rock silicific...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید