@ARTICLE{Mirlohi, author = {mirlohi, Akramosadat and Khalili, Mahmoud and Tabatabaei-manesh, Seyed Mohsen and Massonne, Hans-Joachim and }, title = {Mica chemistry and metamorphism in garnet-micaschists of Haji-Qara high, North of Golpayegan}, volume = {16}, number = {42}, abstract ={Garnet-micaschists from Haji Qara high, north of Golpayegan, are part of the metamorphic rocks of the Sanandaj-Sirjan Zone (SSZ). Lepidoporphyroblastic and porphyropoikiloblastic are the main textures and the mineral assemblages consist dominantly of Fe-biotite, muscovite and ferriphengite, metamorphic Fe-Mg chlorites (I-type and IIb), garnet and quartz. Staurolite, andalusite, plagioclase carbon, Fe-oxides and tourmaline are present as accessories. Petrographic evidences as well as mica chemistry along with other paragenesis and thermometric estimations indicate a path change from amphibolites facies to lower pressure and higher temperature gradient suggesting the presence of a local pluton which led to garnet porphyroblast, biotite and muscovite (overprinted in different orientation) and andalusite crystallization. The occurrence of chlorite, ferriphengite and Fe-oxides demonstrate a retrograde metamorphism during uplift and decompressional cooling path in the area. }, URL = {http://jsci.khu.ac.ir/article-1-1842-en.html}, eprint = {http://jsci.khu.ac.ir/article-1-1842-en.pdf}, journal = {Journal title}, doi = {}, year = {2015} }