Petrology and chromite content of naransk ophiolite complex (West Mongolia)
New petrological and geochemical data are presented concerning polygenic ultrabasite naransk ophiolite complex in West Mongolia. The complex represents a lense-like body of about 38km in length and 10km in width. It was formed by an older ultrabasite massif (80% of the area) and gabbroid infusion separated by an intermediate banded zone. It is eshablished that the ultrabasite massif composed by dunite and dunite-harzburgite blocks has chromite ore occurrences and it is shown that the massif is promising for discovery of commercial chromite mineralization.