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!

Bird's Eye Sphalerite, Balmat, New York

Contributed by: Kah-Wai Lin
Date: Mar 8th, 2026
Locality: Balmat, Fowler, St. Lawrence County, New York, USA (See on Mindat)

Description:
Recently acquired bird's eye sphalerite specimens from Balmat, New York. They fluoresce purple/blue/green under longwave UV.

Originally posted by Kah-Wai Lin on Nature's Rainbows.

Fluorescence under longwave UV light.
Fluorescence under longwave UV light.
Normal light.
Normal light.
Fluorescence under longwave UV light.
Fluorescence under longwave UV light.
Normal light.
Normal light.
Fluorescence under longwave UV light.
Fluorescence under longwave UV light.
Normal light.
Normal light.
Fluorescence under longwave UV light.
Fluorescence under longwave UV light.
Normal light.
Normal light.
Fluorescence under longwave UV light.
Fluorescence under longwave UV light.
Normal light.
Normal light.
Fluorescence under longwave UV light.
Fluorescence under longwave UV light.
Normal light.
Normal light.
Fluorescence under longwave UV light.
Fluorescence under longwave UV light.
Normal light.
Normal light.
Fluorescence under longwave UV light.
Fluorescence under longwave UV light.
Normal light.
Normal light.

Summary of luminescence responses:

Sphalerite (Mindat) (RRUFF)

  • Fluorescence under Longwave (365nm LED) UV light: Violet
  • Fluorescence under Longwave (365nm LED) UV light: Blue
  • Fluorescence under Longwave (365nm LED) UV light: Green
  • Fluorescence under Longwave (365nm LED) UV light: Orange

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