VIRSINEPOLARIS t1_j9r9o3u wrote on February 24, 2023 at 12:09 AM Reply to comment by compounding in What will be the environmental impact of de-orbiting 42,000 Starlink satellites every five years? (Explanation in post) by OvidPerl >[...]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. Permalink Parent 16
VIRSINEPOLARIS t1_j9r9o3u wrote
Reply to comment by compounding in What will be the environmental impact of de-orbiting 42,000 Starlink satellites every five years? (Explanation in post) by OvidPerl
>[...]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.