Edingtonite is a white, gray, brown, colorless, pink or yellow zeolite is Ba. It has varieties with tetragonal , orthorhombic crystals.
The mineral occurs within cavities in nepheline syenites , carbonatites and various mafic rocks. It occurs associated with thomsonite, harmotome and calcite
The mineral was first reported by and named for Scottish mineral collector Other sources (including the mineralogist Haidinger ) credit Scottish geologist and mineralogist Thomas Edington However, as the mineral was named in 1825, the former accreditation must be the true one.