• 西中新元古界—古金属矿床重要产出层位。

    Neoproterozoic-Paleozoic strata of western and central Hunan are the main ore-bearing beds of Au, Sb, As and other metal ore-forming elements.

    youdao

  • 西中新元古界—古金属矿床重要产出层位。

    Neoproterozoic-Paleozoic strata of western and central Hunan are the main ore-bearing beds of Au, Sb, As and other metal ore-forming elements.

    youdao

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