Talc under midwave UV Light



Talc, sphalerite, franklinite and willemite from the Sterling Hill Mine, Ogdensburg, NJ under midwave UV light. The talc fluoresces weak dull yellow, sphalerite blue, purple, orange, willemite green the franklinite is non-fluorescent. 4 1/2" x 2 1/4". From the collection of JVF, photo by WP.


Talc, sphalerite, franklinite and willemite from the Sterling Hill Mine, Ogdensburg, NJ under midwave UV Light