Norbergite - Sterling Mine

Contributed by: Chris Clemens
minID: TW2-FD3
Date: Apr 25th, 2026
Locality: Sterling Mine, Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA (See on Mindat)
Size: 10.2 x 7.6 x 15.2 cm
Weight: 3.31 lb

Description:
Grains of brown/yellow norbergite on white Franklin marble, from the Sterling Mine, Sterling Hill, Ogdensburg, Sussex Co., New Jersey. Under shortwave UV (254nm) the norbergite fluoresces pale yellow and the Franklin marble a dim blue/purple.

Originally posted by Chris Clemens on Nature's Rainbows in 2016.

Fluorescence under shortwave UV light.

Normal light.

Summary of luminescence responses:

Norbergite (Mindat) (RRUFF)

• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Yellow