Alkali rock type gold deposit is a new type of gold deposit which was found and valued in later of 1980s.

碱性岩型金矿是80年代后期被发现和重视起来的一种新类型金矿。

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Alkali rock type gold deposit is a new type of gold deposit which was found and valued in later of 1980s.

碱性岩型金矿是80年代后期被发现和重视起来的一种新类型金矿。

youdao