科学

Lead isotopes trace Malawi's mysterious copper ingot hoard to Congo's Kipushi mine

来源: Phys.org · 发布于 2026年9月26日 13:40

In 1967, a Malawian farmer stumbled upon a hidden hoard of eight copper ingots buried beneath a tree. Now, more than half a century later, scientists have traced the metal to its source: a copper…

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• #copper
• #hoard
• #mysterious
• #scientists
• #isotopes
• #malawian