Extensive outcrops of metamorphic rocks is located in east of fariman (gandab) cantain andalusite schiste has been evaluted their potential as mineral deposite in this study. For this purpose, after preliminary studies of petrography and geochemistry, were performed processing tests including gravity and magnetic separation with aim of evaluation ability of production andalusite used in refract...

Different models are discussed to interpret the presence of kyanite as a stable phase in contact aureoles especially in the andalusite-, sillimanite-bearing aureoles. In such aureoles the polymorphic sequence kyanite → andalusite → sillimanite can be explained in terms of an essentially isobaric path during which kyanite initially crystallises from the breakdown of pyrophyllite or more likely m...

The present study investigates the shape preferred orientation (SPO) and crystal preferred orientation (CPO) of quartz crystals using electron backscatter diffraction (EBSD) in andalusite-cordierite schist from the Ythan Valley, Aberdeenshire, in the Scottish Dalradian block. Quartz crystals in the matrix and andalusite pophyroblasts have inequant to slightly equant shapes. Quartz crystals show...

In Astaneh area (southwest Arak), in the contact with rhyodacitic subvolcanic rocks xenoliths with pyroxene- hornfels mineralogical composition have formed. These rocks have mineral paragenesis including corundum + spinel + andalusite + K-feldspar + plagioclase+ muscovite + biotite and chlorite with granoblastic, lpydoporphyroblastic, porphyrolpydoblastic, symplectite and poikiloblastic texture...