Kondyor Massif

The Kondyor Massif or Konder is a circular intrusion of igneous rock, about in diameter. It is located in Khabarovsk Krai, Russia, west-southwest of Okhotsk, or south-east of Yakutsk. It is reached from Yakutsk by road via Amga. It is an important source of platinum.
The Kondyor Massif stands as a textbook example of a ring intrusion, renowned for its remarkable geometric circularity and distinct ridge-and-depression topography. It serves as a global reference site for the study of alkaline-ultramafic magmatism and associated platinum-group element mineralization.
Since 1984, Artel Starateley "Amur" has developed this alluvial platinum deposit.