I might be missing something, but I don't seem to have any ice resources on Luna. I've travelled quite far, have a small base set up, and launched about 20 rockets... but I don't see any Ice that I can mine.

Is there a way to spawn in ice? or do I need to send up water in rockets?

There should be ice very near the spawn area on Luna nearby the starting moon rock patch.

Ice isn’t like a regular resource, it is more like vanilla’s crude oil patches, but much bigger and only one per patch.

I've got nothing available. Any known way to spawn one?

Used the editor to spawn some stuff in, not sure what happened, but making it work lol :)

Did you have the moon rock resource spawn in your world? Have you also seen rich moon rock and astro crystals resources?