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!

Sphalerite and Willemite

Contributed by: Axel Emmermann
minID:
Date: Jan 23rd, 2025
Locality: Franklin Mining District, Sussex County, New Jersey, USA (See on Mindat)

Description:
Sphalerite with willemite. The sphalerite has a nice phosphorescence, which helps to distinguish it from calcite. SW and MW-UV combined.

Fluorescence under shortwave and midwave UV light.
Fluorescence under shortwave and midwave UV light.
Normal light.
Normal light.

Summary of luminescence responses:

Sphalerite

  • Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Orange
  • Afterglow after exposure to Midwave (305nm Lamp/Mercury) UV light: Orange
Willemite
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Green

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