Glaucochroite under shortwave UV Light



Glaucochroite (dark gray to gray-brown), calcite, hardystonite and green willemite Franklin Mine, Franklin, NJ under shortwave UV light. The willemite fluoresces green, hardystonite purple and the calcite red-orange, glaucochroite is non-fluorescent. Photo by WP.


Glaucochroite, calcite, hardystonite and green willemite Franklin Mine, Franklin, NJ. under shortwave UV Light