Sphalerite under longwave UV Light



Sphalerite, willemite, franklinite and minor calcite, from Franklin, NJ under longwave UV light. The sphalerite fluoresces orange and blue-violet, willemite green, the calcite is not fluorescing and franklinite is non-fluorescent. 2 1/2" x 1 1/2". From the collection of, and photo by Robert A. Boymistruk.


Sphalerite, willemite, franklinite and minor calcite, from Franklin, NJ. under longwave UV Light