Following "did-the-bnei-israel-go-to-the-mikveh-in-the-desert":
Based on our Halacha, given its divine supernatural essence, would Be'er Miryam be Kosher as a Mikve, if its water would pour out to a pool?
Could, for example, Rashbi create a Kosher supernatural pool by uttering sacred names?
I seek to see Halachic discussions similar to "what blessing fo we recite on Manna?". Simply citing Rabbis speculating that as only the well's waters were available in the desert they served for Mikve purposes is not enough.