Caption:
This mineral produces a strong yellow colour when exposed to long wave ultraviolet (UV) light. Wernerite is a variation of scapolite. Collected in Grenville Quebec, Canada. Wernerite is considered one of the strongest fluorescent minerals in the long wave. This mineral was named in the early 1800's by Abraham Gottlob Werner (1749-1817) who was a well known German professor of mineralogy.