The geochemical characteristics of perdu rhyolite related with uranium mineralization of Hetaoba mining area in Duolun and 460 mining area in Guyuan are compared to prove uranium occurrence is the typical uranium deposit of the modern of 460

due to theoretical guidance to finding uranium occurrence in Hetaoba. Research of the perdu rhyolite related with uranium mineralization from the two mining areas

shows that

the main elements of the perdu rhyolite are rich in silicon

kalium

alkali

both of products from the contients plate mantel source magma; rare elements shares similar characteristics

showing high total REE

LREE enrichment

a strong negative Eu anomaly. Two formations of rock have similar genesis source characteristic

uranium occurrence in Hetaoba is thought of uranium deposit of the modern of 460

which combined with the research of mineralization age from forefathers.