Multiple well formed crystals of Franklinite, a rare mineral initially discovered at this location, sit on a matrix of highly fluorescent Calcite and Willemite. The Calcite fluoresces a bright red/orange while the WIllemite glows bright green under shortwave UV light. The largest crystal is .25" on a side.Collected by an employee of the Franklin Mine, Franklin, NJ early/mid 20th C. 1.5" x 1" x 1.25", 1.7 oz.

Franklinite on Calcite with Willemite. Franklin Mine, Franklin, NJ