On: Adding crushed rock to farmland pulls carbon out o...

[avodonosov]

What is the risk to get silicosis caused by that rock dust?

https://en.m.wikipedia.org/wiki/Silicosis

[vonwolfhausen → avodonosov]

Dust is never good, but olivine specifically was introduced as a foundry sand specifically because it doesn't cause silicosis (vs quartz).

[pfdietz → vonwolfhausen]

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.

[avodonosov → vonwolfhausen]

The article also mentions metabasalt