نتایج جستجو برای: pegmatite
تعداد نتایج: 412 فیلتر نتایج به سال:
This report presents basic guidelines to help undergraduate first year geology students at the Federal University of Pernambuco Brazil. It reviews general aspects Mineralogy field trip presenting a comprehensive review on pegmatite classification, regional Seridó Pegmatitic Province (Rio Grande do Norte and Paraíba states) as well local geological three mines that are visited locally mapped. Du...
This paper is an outgrowth of the compilation of metamorphic information for the Canadian Shield in Ontario, and complements the recently compiled Metamorphic Map of the Canadian Shield. The paper contains a summary of the Archean metamorphic history of the Superior Province in Ontario on a subprovince basis, with an emphasis on the limitations of the existing data and the reasoning applied in ...
The Malayer-Boroujerd-Shazand district (approximately 70 km long) is located in the Sanandaj-Sirjan zone with NW-SE trending, and consist mainly of hornfels, schist, phyllite, migmatite, granite and granodiorite which contain numerous pegmatite and aplitic dykes. Among these rocks, granodiorite, hornfels and schist are main host rocks for quartz, feldspar, muscovite and tourmaline bearing pegma...
The pegmatites of the Seridó Pegmatite Province show a granitic bulk mineralogical composition, composed K-feldspar, albite, quartz, muscovite and occasionally biotite. Detailed studies major minerals are scarce. There is, on other hand, relatively larger number published contributions concerning pegmatite accessory minerals. This field trip guide focus mainly occurrence locations these last mi...
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