You can get lithium compounds that are quite light from a brine lake, and the wind can have more than enough energy to shove it around for miles and miles. I've

You can get lithium compounds that are quite light from a brine lake, and the wind can have more than enough energy to shove it around for miles and miles. I've visited brine plants and done direct ground lithium mining. When mining lithium underground, you need very strict respiratory gear, because lithium particulates (especially from the dried clays around lepidolite and tourmaline) are generally fine enough to get past even HEPA filters. And at that size, it doesn't take much in the way of a breeze to send it all over the place. You can watch it just from your lighting and respiratory exhaust. It just hangs there for a good while in almost-dead air. 'Falling out' takes dozens of minutes.