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The Sabzevar complex ophiolite including igneous rocks consist of peridotites (lherzolite, dunite and harzburgite), serpentinite, gabbros and a volcanic sequence composed of basalts, andesites, rhyolites and basanites. Based on petrographic observations and geochemical analyses of incompatible trace and rare earth elements, three different types of extrusive rocks have been classified. a: Initial molten originated N-MORB-like basalts, which formed after a LREE depleted magmas, and are petrogenetically related to t...

According to the mineral compositions, paragenesis, relationships and the fluid inclusion microthermometry two stages of skarn alteration within the Rize pluton area have been identified. The first stage (stage I) was characterized by the Spurrite, vesuviavite, wollastonite, magnetite, pyroxene, gehlenite and garnet assemblages at high temperatures ( 750 oC). The second stage (II) occurred at lower temperature ( 500 oC) when the system collapsed, and is characterised by tremolite, low temperature vesuvianite, rust...

The Sabzevar ophiolite is a highly dismembered ophiolite complex located along the northern boundary of the Central Iranian Microcontinet (CIM) and is one of the internal groups of ophiolites and colored melange. The area has various lithological units that are the cause of Sabzevar colored melange zone. There are many chromite pods in the area but the high topography and mountainous condition and inability to trace the hidden lenses, many of them are not explored yet. A mathematical- genetic model could be helpfu...