The Radusha Massif is the most significant ophiolite massif, covering an area of 60 square kilometers northwest of Skopje. Chromium ore was extracted from the massif for decades and it also hosts dunite, harzburgite, veins and lenses of gabbro and rodingite. Gabbro-diorites of the ophiolite suite include the Demir Kapija-Gevgelija, Klepa and Skopska Crna Gora massifs in the central part of the Vardar Zone.