Fluoborite under shortwave UV Light



Fluoborite grains in calcite / marble, with graphite and pyrite from the Sterling Hill Mine, Ogdensburg, NJ under shortwave UV light. The fluoborite fluoresces cream-white and the calcite / marble, graphite and pyrite is non-fluorescent. Photo by JVF.


Fluoborite grains in calcite / marble, with graphite and pyrite, Sterling Hill Mine under shortwave UV Light