Number of references: 2
None reported
Manuel Robbins. "Fluorescent Forum. Fluorescing Minerals: Expanding the list." Rocks & Minerals, 62(1):53-54, 1987. 10.1080/00357529.1987.11762628
Dan Holtstam. "Langban: the mines, theis minerals, geology and explorers." Excalibur Mineral Company, 1999. ISBN: 9789187214882