🦾 огромный золотой самородок #новостинауки #qwerty

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·Nov 3, 2024

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Этот человек стоит рядом с золотым самородком, добытым в Австралии в 1872 году. Самородок весил 285 кг, из которых 83 кг были чистое золото. Он не сохранился, его переплавили.

Землетрясения для этого — самое то. Сотни сдвигов земной коры позволяют получить густую сеть трещин, в которой растворы находятся под большим давлением. При этом образуются кварц, кварцевые жилы, в которых в основном и находится самородное золото.

Вот только раствора, достаточного для того, чтобы сформировались достаточно крупные залежи золота, нужно очень много — в буквальном смысле целые бассейны. Ведь концентрация золота во флюидах очень маленькая — всего лишь 1 на миллион. Но как...

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🦾 огромный золотой самородок #новостинауки #qwerty

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