Gypsum under shortwave UV Light



Gypsum (selenite), franklinite and calcite from the Sterling Hill Mine, NJ under shortwave UV light. The gypsum fluoresces blue, calcite red-orange to orange, and the franklinite is non-fluorescent. 3 3/4" x 1 1/2". From the collection of, and photo by WP.


Gypsum (selenite), franklinite and calcite from the Sterling Hill Mine, NJ under shortwave UV Light