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!

Cryolithionite from Nevada

Contributed by: Michael Crawford
Date: Jul 6th, 2025
Locality: Zapot Pegmatite, Gillis Range, Fitting Mining District, Mineral County, Nevada, USA (See on Mindat)
Size: 9 x 12.5 cm

Description:
A specimen of cryolithionite (Na3Al2(LiF4)3) from the Zapot Pegmatite, Mineral County, Nevada. The specimen has modest green fluorescent activated by uranyl ions. The emission spectrum contains several vibronic peaks characteristic of uranyl activation. The radioactivity is around 100 CPM.

Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.
Normal light.
Normal light.
Shortwave Emission Spectrum
Shortwave Emission Spectrum

Summary of luminescence responses:

Cryolithionite (Mindat) (RRUFF)

  • Fluorescence under Shortwave (255nm LED) UV light: Green
  • Fluorescence under Midwave (305nm LED) UV light: Green

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