I am still avoiding direct Psychepoasting but I did catch, on Jimmy Wales' misinformation emporium, reference to enstatite chondrites, bencubbinites, and mesosiderites
. I might be safe if I just look into those.
They have in common that they are denser than stone. But there's a reason they're not classified as the same thing. I don't see how these three could come from the same place.
Bencubbinites form a metallic "CB" group of carbonaceous chondrites; they are associated most with Pallas, possible home of the "CR" group. (Don't confuse them with "Pallasites" plz.) Enstatite chondrites by contrast formed where there wasn't much oxygen - and they're rare. The Enstatites may well have formed with the Vulcanoids (which we can't see in the Solar glare).
Luckily for near-earth asteroid colonists, I don't think Atíra and similar be enstatites. They haven't lost all their oxygen yet. Nitrogen and hydrogen, sure - still a problem. Colonists who want an enstatite rock (because GOLD) will need to get further-in than Venus, with all the delta-V pain that entails.
BACKDATE 10/21: yeah - behind the curve again, here. Busy work week, not much news I cared to report.
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