Sphalerite under midwave UV Light



Sphalerite, willemite, franklinite and minor calcite, from Franklin, NJ under mid-wave UV light. The sphalerite fluoresces orange-red and purple, willemite green, calcite light red and the 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 midwave UV Light