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What is the oldest known mineral on the planet which was once a part of the Earth's crust?

Question #151614. Asked by BigTriviaDawg.
Last updated Aug 17 2024.
Originally posted Aug 17 2024 8:11 PM.

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psnz star
Answer has 2 votes
psnz star
6 year member
1008 replies avatar

Answer has 2 votes.
It is a zircon mineral, found in Australia.
The oldest material of terrestrial origin that has been dated is a zircon mineral of 4.404 ±0.008 Ga enclosed in a metamorphosed sandstone conglomerate in the Jack Hills of the Narryer Gneiss Terrane of Western Australia.
link https://en.wikipedia.org/wiki/Oldest_dated_rocks

In the above quote, "Ga" (for gigaannus) represents one billion, or 10^9 years.
Response last updated by psnz on Aug 17 2024.
Aug 17 2024, 8:12 PM
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