Mineral chemistry and thermobarometery of garnet staurolite schists from the Hamedan area
نویسندگان
چکیده
منابع مشابه
mineral chemistry of garnet in pegmatite and metamorphic rocks in the hamedan area
introduction the area of this study is located near hamadan within the sanandaj - sirjan tectonic zone. in the hamadan area, consisting mainly of mesozoic plutonic and metamorphic rocks, aplites and pegmatites locally contain garnets.(baharifar et al., 2004, amidi and majidi, 1977; torkian, 1995. garnet-bearing schists and hornfelses in the area are products of regional metamorphism shown by sl...
متن کاملGarnet-Biotite Chemistry for Thermometry of Staurolite Schist from South of Mashhad, NE Iran
Mashhad Metamorphic Complex (MMC) with metamorphic, granitic intrusions and ophiolite units is situated in the suture zone of Paleotethys in NE Iran. Triassic staurolite-garnet schist of Khalaj represents the highest grade of metamorphism in MMC. In this study EPMA analyses of garnet and biotite used to determine the maximum temperature for regional metamorphism. The pattern of zoning in garnet...
متن کاملThe study of petrography and mineral chemistry in aplite-pegmatites from Simin valley (south of Hamedan)
Aplitic and pegmatitic dykes exposed in southeast of Hamedan in the Simin area. From the margin to the center of these dykes, two typical textural areas present that obviously indicate effect of crystallization progress: 1- In the marginal zone, fabrics consist of anisotropic textures of the outer zones, including fine-grained units, graphic intergrowths, and unidirectional solidification text...
متن کاملشیمی کانی‌ها و دما فشارسنجی گارنت استارولیت شیست‌های منطقه همدان
Garnet bearing staurolite schists comprise an important part of regional metamorphic succession in the Hamedan area (north of the Sanandaj-Sirjan zone). These rocks contain staurolite and garnet porphyroblats that lie in a matrix which is composed of biotite, muscovite and quartz. The staurolites in Fe-rich and show little chemical composition diversities. Almandin is the most important compone...
متن کاملA Detailed Study of Morphology and Chemistry of Garnet Crystals with Suggestion of New Subdivisions: Data from Pelitic Schists, Hornfelses and Aplites of Hamedan Region, Iran
The study area is a part of the Sanandaj-Sirjan metamorphic belt comprising lowto high-grade regional and contact metamorphic rocks that are intruded by various plutonic bodies. Garnet crystals are abundant in pelitic schists, amphibole schists, migmatites, hornfelses and aplites. They are mostly almandinerich (XAlm>60) pyralspite garnets and show dodecahedron, trapezohedron and mixed (dodecahe...
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ژورنال
عنوان ژورنال: Iranian Journal of Crystallography and Mineralogy
سال: 2018
ISSN: 1726-3689,2588-4719
DOI: 10.29252/ijcm.26.2.327