Norbergite: The mineral norbergite information and pictures

About

Norbergite is a member of the humite group, and is most distinguished from other members by its fluorescence. Norbergite is named after the locality of Norberg, Sweden, where this mineral was first described.

Crystal Forms & Aggregates

As small tabular and prismatic crystals that are usually rounded with pointed terminations. Most often as embedded rounded grains.

Other ID Marks

Strongly fluorescent bright yellow in shortwave ultraviolet light.

Striking Features

Mode of occurrence and fluorescence.

Environment

In marbles.

Uses

Norberite is used as a collectors mineral, mostly for collectors specializing in fluorescent minerals.

Noteworthy Localities

Norbergite is not a common mineral and is found only in a limited amount of localities worldwide. The type locality where this mineral was first described is the Östanmossa mine, Norberg, Västmanland, Sweden. The marbles of Mogok, Burma (Myanmar) have produced large gemmy crystals of Norbergite.
The Franklin marble district in New Jersey has produced some of the best collectible examples of this mineral, especially at the Limecrest Quarry, Sparta, Sussex Co., where it formed in well-shaped, flesh-colored crystals. Norbergite is one of the important fluorescent minerals from the Franklin Mine, Sussex Co., New Jersey, where it formed in yellow to brown embedded grains. A new housing development on Whispering Woods Lane behind the Sterling Hill Mine in Ogdensburg, New Jersey, had produced a one-time find of good Norbergite during an excavation. Norbergite has also been found across the border in Amity, Orange Co., New York.

Common Mineral Associations

Calcite, Diopside, Phlogopite, Tremolite, Wollastonite, Graphite, Spinel

Norbergite

Abouti

Crystal Forms & Aggregatesi

Other ID Marksi

Striking Featuresi

Environmenti

Usesi

Noteworthy Localitiesi

Common Mineral Associationsi

Photos