نتایج جستجو برای: mineral deposit

تعداد نتایج: 82901  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی معدن 1387

هدف از انجام این پروژه ارائه نقشه پتانسیل کانی زایی سرب و روی بر پایه دورسنجی در برگه های 1:100000 بهابادی و اسفوردی است. در این راستا روش های جدید دورسنجی بر روی مجموعه داده های ماهواره ای انجام شده و نقشه های پتانسیل کانی زایی سرب و روی در منطقه مورد مطالعه تهیه شده است. بر اساس مطالعات و گزارشات موجود، کانسارهای سرب و روی منطقه را می توان در دو دسته ماسیوسولفاید با میزان رسوبی – آتشفشانی (سد...

2017
Elizabeth J. Catlos Nathan R. Miller

Monazite [(Ce,Th)PO4] from the Llallagua tin ore deposit in Bolivia is characterized by low radiogenic element contents. Previously reported field evidence and mineral associations suggest the mineral formed via direct precipitation from hydrothermal fluids. Monazite compositions thus may provide insight into characteristics of the fluids from which it formed. Chemical compositions of three Lla...

Abdol Majid Yaghubpur Habib Mollai Reza Sharifiyan Attar

Principal Skarn deposits along the northern margin of the Ahar batholith from west to east include Mazraeh, Vine and Gowdoul skarn deposits. Among these skarn deposits, the Mazraeh Cu-Fe Skarn deposit is the most typical skarn deposit in the NW Iran. This skarn deposit is located 5 km. north of Mazraeh village and 20 km north of Ahar town. The origin and development of the skarn can be related ...

Bonyadi, , Forouzesh, ,

Angouran zinc and lead deposit is located about 135 km west of Zanjan city, in the northwest of the Sanandaj-Sirjan structural zone The results of this study indicate that the dolomitic alteration occurred in the carbonate hanging-wall and the presence of ankerite in the schist footwall. The main host of ore deposit is metamorphic carbonate. The Angouran dolomite is secondary and hydrothermal. ...

2007

Nigeria is richly endowed in convertible natural resources of which solid minerals are a member of the endowments. However, the country is basically a mono-product economy based on its vast oil deposit accounting for over 84% of foreign earnings and 25% of GDP. The triple challenges of the volatile nature of global oil politics, achieving the objectives of the millennium development goals and t...

2002
M. G. Mihalynuk M. T. Smith

Magmatic and stratigraphic settings exert a first order control on the formation of various mineral deposit types. Some sating are rich in mineral wealth while others are barren. Stratigraphic setting is of particular importance where stratif&m or stratabound minerill deposits are concerned x orebodies are commonly restricted to specific stratigraphic intervals. For example. within the area bou...

Journal: :Social security bulletin 1984
J Bondar

In 1975, Social Security beneficiaries were given the option of having their monthly benefit payments sent directly to their banks through an electronic funds transfer system. Since then, beneficiaries have been enrolling in this program in rapidly increasing numbers. At the end of 1976, fewer than 5 million beneficiaries--14 percent of the total--were enrolled in the program. By the end of 198...

2016

Parking Services [1] Parking permits are required to park on campus. Parking permits can be purchased online. Campus Map [2] The Campus map allows you to search for a location on campus by selecting a building or selecting a department name. Identification (ID) card Please visit Human Resources, 5th floor, South Tower, University Centre, to complete an ID application form. Your University of Gu...

2018

Parking Permits [1] Parking permits are required to park on campus. Parking permits can be purchased online. Campus Map [2] The Campus map allows you to search for a location on campus by selecting a building or selecting a department name. Identification (ID) card Please visit Human Resources, 5th floor, South Tower, University Centre, to complete an ID application form. Your University of Gue...

2004
CAHİT HELVACI FEDERICO ORTÍ

The Kırka borate deposit (Miocene), in western Turkey, the most important B2O3 producer at present in the world, exhibits a symmetrical zonation in a lateral sense; it is comprised of: a central body of Na borate (borax), an intermediate zone of Na–Ca borate (ulexite), and a marginal zone of Ca borate (colemanite). This mineral zonation is also developed in a vertical sense, although it is some...

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