Surface Resource Distribution Across the Orbits of the Saturnian Moons

Question

I've posted questions before related to ISRU and/or resource harvesting in the Saturn system, given how low the velocity change is for inter-moon transfer.

• What resources are available to turn into storable hypergolic on the Jovian moons

However, I've never asked about WHAT the resource distribution is. Specifically, I would like to know: Have studies been done analysing the distribution and usefulness of the surface resources of Saturn's moons