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Re:Adding Crushed Rock to Farmland Pulls Carbon Out of the Air by vonwolfhausen on Wednesday October 25, 2023 @02:37PM (#38016535)
Dust is never good, but olivine specifically was introduced as a foundry sand specifically because it doesn't cause silicosis (vs quartz).
Re:Adding Crushed Rock to Farmland Pulls Carbon Out of the Air by avodonosov on Wednesday October 25, 2023 @03:32PM (#38017188)
The article also mentions metabasalt
Re:Adding Crushed Rock to Farmland Pulls Carbon Out of the Air by pfdietz on Wednesday October 25, 2023 @10:33PM (#38021023)
Olivine is a kind of silicate where the silicon atoms are in isolated tetrahedra (with four oxygen atoms), rather than linked into large chains, sheets, or 3d lattices. This makes it weather more quickly (for CO2 absorption), but I suspect also makes it dissolve more quickly in the body.