Fluorescent Sphalerite Willemite 1 lb 5.9 oz Franklin Sterling Hill NJ UV For Sale

Large fluorescent mineral specimen from the Franklin–Sterling Hill mining district of New Jersey.Weight: 1 lb 5.9 oz (approximately 623 g)
Specimen ID: ZM044This is a substantial display-size specimen with dramatically different fluorescence depending on the UV wavelength.Under shortwave UV, the specimen shows extensive yellow/orange fluorescence accompanied by areas and speckling of bright green and additional contrasting fluorescent responses.Under midwave UV, the yellow/orange fluorescent material becomes especially intense and widespread, producing one of the strongest visual responses of the specimen.Under longwave UV, the response is more subdued but remains clearly visible, with scattered orange fluorescence and additional small fluorescent areas.In normal light the specimen has a gray, tan and dark mineralized matrix with a coarse natural texture. The difference between its ordinary appearance and its UV appearance is dramatic.The individual fluorescent mineral species have not been laboratory confirmed, so they are intentionally not represented here as definitive identifications.Photos show the actual specimen for sale under normal light and multiple UV wavelengths. Fluorescent appearance can vary depending on lamp wavelength, power, distance, camera settings and ambient lighting.Natural rough mineral specimen. Please review all photographs for condition, shape, coloration and fluorescence.Franklin–Sterling Hill district, New Jersey, USA.