Locality: Sterling Hill Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex County, New Jersey, USA
Size: 63 mm x 42 mm x 30 mm (2.5 in. x 1.6 in. x 1.2 in.)
Weight: 70 g (2.5 oz.)
Small cabinet specimen of willemite to 7 mm and black franklinite (single 4 mm crystal on the side) on non-UV reactive white calcite matrix. The willemite has strong green fluorescence under short wave UV light.