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A comment on Surprising Phosphate Finding in NASA's Osiris-Rex Asteroid Sample.

Re:Surprising Phosphate Finding in NASA's Osiris-Rex Asteroi... by prewett on Monday July 01, 2024 @09:58AM (#40845902)
> These rocks have retained their original state, having neither melted nor resolidified since their inception

How are they able to tell that?

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Re:Surprising Phosphate Finding in NASA's Osiris-Rex Asteroi... by malfist on Monday July 01, 2024 @10:13AM (#40846020)
I don't pretend to know in this case, but sometimes you can tell by the lattice, see https://en.m.wikipedia.org/wiki/Widmanst%C3%A4tten_pattern

The only way a widmanst pattern forms is by slow cooling of the iron over millions of years. Check out the wiki section on why it can't be reproduced in a lab

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Re:Surprising Phosphate Finding in NASA's Osiris-Rex Asteroi... by pyinstallwoes on Monday July 01, 2024 @03:41PM (#40849753)
It is interesting it’s triangular
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