They won't have a use in Archaeology at release (maybe in the future, but I can't see a good way for how they could be used).
This thread was added on February 24, 2020, with posts from JagexRowley.
Original Post
https://www.reddit.com/r/runescape/comments/f8ohav/please_jagex_let_us_use_up_our_stone_spirits_with/