Does Arcum's Astrolabe Make Snow Mana?

If an object has the supertype "snow", it's a snow source (C.R. 205.4g). However, there is no such thing as "snow mana"; "[s]now is neither a color nor a type of mana" (C.R. 107.4h; see also C.R.

Do snow artifacts make snow mana?

Since it's a snow artifact, that mana counts as snow mana. So, if a snow card produces mana, it produces snow mana.

Does icy Manalith make snow mana?

For a payment of {3} and tap, Svella will make a colorless Snow artifact token named Icy Manalith that can tap for one mana of any color.