The ore deposit was surrounded by fractures of NE and NW directions,and generically relat-ed to rhyolite porphyry,The early alterations are mainly of K-feldsparization and biotitiza-tion,and the laters are mainly of silication,sericitization and propylitization.

A special kind of liparitic mortar lava with the texture of both lava and ignimbrite is developed in Simuke area,Northern Daxinganling.

Identification of rhyolite?dacite porphyry and its relation to uranium mineralization at Xiangshan uranium ore-field;