intrusive 专八

The orebodies occur within or near the exocontact of intrusive rocks and above the hidden igneous rocks.

金矿产于岩体外接触带及其附近和隐伏岩体上。

Rossing uranium mine is the only operating uranium mine in the world where the uranium occurs in intrusive alaskite.

铀矿山是目前世界上惟一尚在运营中侵体白岗岩型铀矿。