Edingtonite
Edingtonite is a white, gray, brown, colorless, pink or yellow mineral. Its chemical formula is BaAl2Si3O10ยท4H2O. It has varieties with tetragonal, orthorhombic or triclinic crystals.[1]
References
- Richard V. Gaines, H. Catherine W. Skinner, Eugene E. Foord, Brian Mason, and Abraham Rosenzweig: "Dana's new mineralogy", pp. 1683-1684. John Wiley & Sons, 1997
Source: adapted by the editor from Wikipedia, the free encyclopedia; from the article "Edingtonite". Image Credit.