نتایج جستجو برای: potassic composition
تعداد نتایج: 259977 فیلتر نتایج به سال:
Isotopic signatures are used to distinguish Group I, Transition, and Group II kimberlites, and provide information on the origin of melts parental to the final intrusion. Kimberlitic rocks are often weathered and altered, making them potentially unsuitable for whole rock isotopic studies. We therefore have explored the alternative use of the isotopic signatures of resistant minerals in kimberli...
Quartz-monzonitic porphyry stock at Kighal is located about 12 km north of Varzeghan, East Azarbaidjan Province, NW Iran. It has intruded older volcanic units during magmatic activities of Pyrenean orogenic phase and produced Cu-Mo mineralization and hydrothermal alteration zones in the region. The stock was intruded by numerous cross-cutting dikes mainly of dioritic to quartz-dioritic composit...
Abstract Abundant silica-undersaturated potassic lavas are found in the centre of Turkish–Iranian plateau (NW Iran) as flows, pillows and dykes. They display abundant zoned clinopyroxene macrocrysts xenoliths igneous cumulates. We determined four types crystals (Type-I, -II, -III -IV) on basis their composition zoning patterns. Use situ compositional data, together with whole-rock major trace e...
the darreh-zar porphyry copper deposit, located in the urumieh – dokhtar magmatic belt, lies about 10 km southeast of sar-cheshmeh porphyry copper deposit. the ore body with hydrothermally altered zones including potassic, chlorite-sericite, sericite, argillic and propylitic all related to the darreh-zar porphyry stock intruded the eocene volcanic rocks. pyrite, chalcopyrite, molybdenite, with ...
copper extraction from heap 3 low grade ore at sarchechmeh is limited due to its mixed composition (copper oxide and sulphide minerals). changing this heap to a bioheap could improve the copper recovery.
این پایان نامه در سه فصل نوشته شده است، در فصل اول تعاریف و قضایای لازم برای فصل های دوم و سوم بیان شده است. فصل دوم به بررسی عملگرهای ترکیبی وزن دار روی فضاهای توابع اندازه پذیر اختصاصداده شده است. فصل سوم که در واقع اصلی ترین فصل پایان نامه است به بیان نرم اساسی عملگر ترکیبی روی فضاهای ارلیز می پردازد. این پایان نامه بر اساس مقالات زیر تدوین گردیده است: • m. r. jabarzadeh the essential...
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