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The Kuznetsk Alatau ridge represents a NW segment of the Altai-Sayan folded belt (ASFB) and is considered as a Caledonian collisional system. The ophiolites from the northern slope of this ridge are the most representative fragments of suboceanic crust. This work presents the results of a study of the mineralogical composition of metabasites from ophiolite paragenesis of the Severnaya, Zelenaya, Barkhatnaya mountains and Semenovsky massif. The samples from the gabbroid and subvolcanic complexes were selected and s...