Sellaite is a mineral that can be found in a variety of colors from clear to white, pink, grey, and brown. It is a rare mineral that is typically found in hydrothermal deposits. The chemical formula of sellaite is MgF2, which means it is a fluoride mineral. There are a few different terms used as synonyms for sellaite. The first is magnesium fluoride, which is the chemical name for the mineral. Another term used for sellaite is fluorspar. This is a term that is commonly used for a variety of different minerals that contain fluoride. Finally, sellaite can also be referred to as magnesium difluoride, which is another name for the chemical compound. In conclusion, while there are only a few commonly used terms for sellaite, it is a valuable mineral due to its unique properties.