Hello! I'm trying to come up with ideas for ways to simulate extraction methods for asteroid mining. I've got a few ideas based off of internet & database searches, and have an idea I'd like to work on. It involves the separation of materials using centripetal force. Materials would separate into layers based off of their density, right? The first thing that I'd like to try to separate is ice from the rest of the mined material. I'm looking for materials that are solid at room temperature but have a similar density to ice. Any suggestions? Any suggestions for other aspects of the experiment would be appreciated as well.