Fluorescent Mineral Database

A new secret project! Trying to create a nice Fluorescent Mineral Database (FMDB), which would be searchable by mineral, locality, and luminescence properties. Also making it easy for people to contribute with their own specimens!

Scapolite and Calcite - Sterling Hill, New Jersey

Contributed by: Chris Clemens
Date: Apr 26th, 2026
Locality: Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA (See on Mindat)
Size: 4.38 x 3.12 x 7.49 cm
Weight: 125 g

Description:
This rock contains an assemblage of light, colorless scapolite and calcite and dark franklinite, from the famous Sterling Mine, Sterling Hill, New Jersey. Under shortwave UV, the scapolite fluoresces a moderate maroon color, and the calcite a brighter orange. The franklinite is not fluorescent.

Originally posted by Chris Clemens on Nature's Rainbows in 2017.

Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.
Normal light.
Normal light.

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red
Scapolite (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red

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