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compounding t1_j9qkeu5 wrote

Reply to comment by CrustalTrudger in What will be the environmental impact of de-orbiting 42,000 Starlink satellites every five years? (Explanation in post) by OvidPerl

Composition does matter, but silicate minerals have tons of aluminum in them.

A quick check shows that most types of low-iron meteorites appear to still be very roughly 5-10% aluminum by mass.

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VIRSINEPOLARIS t1_j9r9o3u wrote

>[...]silicate minerals have tons of aluminum in them.

That might be on Earth, because the lightness of aluminium drove its concentration in the crust.

> A quick check shows that most types of low-iron meteorites appear to still be very roughly 5-10% aluminum by mass.

According to https://periodictable.com/Properties/A/MeteoriteAbundance.html aluminium is ony 0.9 % of general meteorites mass.

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