Copper under shortwave UV Light



Copper, willemite, franklinite and minor zincite from Franklin from Franklin, NJ under shortwave UV light. The willemite fluoresces green, the copper, franklinite and zincite are non-fluorescent. 4 1/4" x 2 1/8". From the collection of, and photo by Robert A. Boymistruk.


Copper, willemite, franklinite and minor zincite from Franklin from Franklin, NJ under shortwave UV Light