Stevensite from Fort Lee, NJ, USA
Radiating crystals of brown stevensite. Under longwave UV light it shows some light brown fluorescence: not the typical bright, saturated...
The mines of Franklin and the Sterling Hill Mine in northwest New Jersey are world famous - and are known as the FLuorescent Mineral capital of the world. The mines boast of over three hundred different minerals, with more than 60 new mineral species claiming this area as the type locality.
Famous for their saturated, bright colors, these minerals are often the foundation of any world-class fluorescent mineral collection. More information can be found in this excellent pdf article from 1981 about the mines, the geology, and the minerals.